- Description
- Codes
- Comparability
- Universe
- Availability
- Questionnaire Text
- Flags
- Source Variables
- Editing Procedure
Description
RELATE describes an individual's relationship to the head of household or householder. Beginning in 1880, data on household relationship was asked of every person. The general relationship code is reasonably comparable across years. The detailed code makes distinctions that cannot be made in all years.
The relationship codes are divided into two categories: relatives (codes 1-10) and non-relatives (codes 11-13). In general, the codes for relatives are self-explanatory. The non-relative codes are divided into three groups: "Partner, Friend, Visitor," roughly described as persons who do not pay or work for their accommodations (unless they share ownership); "Other Non-Relatives," including those persons paying or working for accommodations; and "Institutional Inmates." See the comparability discussion for further information about the coding scheme.
RELATE is not available for 1850-1870, but the IPUMS variable IMPREL produces similar results. As a convenience, the extract system is set up so that users may include RELATE in extracts of the 1850-1870 samples. In those years, RELATE contains the information that is documented in the IMPREL variable description.
Codes and Frequencies
An 'X' indicates the category is available for that sample
Code | Label |
2023
acs
|
2022
acs
|
2021
acs
|
2016
acs
|
2011
acs
|
2006
acs
|
2000
1pct
|
1990
1pct
|
1980
1pct
|
1970
met2
|
1970
met1
|
1960
1pct
|
1950
1pct
|
1940
1pct
|
1930
1pct
|
1920
1pct
|
1910
1pct
|
1900
1pct
|
1880
1pct
|
1870
1pct
|
1860
1pct
|
1850
1%+
|
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RELATIVES | |||||||||||||||||||||||
01 | Head/Householder | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
02 | Spouse | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
03 | Child | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
04 | Child-in-law | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
05 | Parent | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
06 | Parent-in-Law | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
07 | Sibling | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
08 | Sibling-in-Law | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
09 | Grandchild | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
10 | Other relatives | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
NON-RELATIVES | |||||||||||||||||||||||
11 | Partner, friend, visitor | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | · | · | · |
12 | Other non-relatives | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
13 | Institutional inmates | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
Can't find the category you are looking for? Try the Detailed codes
Comparability
1. Group Quarters
The general code is comparable across all years. Users should note, however, that there are some fundamental differences between the early period (before 1940) and the later period (1940-2010, the ACS, and the PRCS). Group quarters residence is a primary distinction in the relationship variable for the later period, but before 1940 and in the 1940 100% dataset "relationship to head" was recorded regardless of group quarters status. Persons classified as related to the head (codes 1 through 10) in the early period would have been classified in the "Other non-relative" category based on their group quarters status in the later years.
We decided not to impose consistency between the two periods because it would have resulted in the loss of too much information in the early period. Users may recode RELATE for greater comparability across the two periods, but we recommend caution; a recode may lose considerable information, changing what were considered ordinary households in the early years into group quarters. To impose the 1970 group quarters definition on all years, create a new general RELATE category "14"--'Non-institutional group quarters members'--and classify all group quarters members (see GQ) from RELATE categories "1" through "12" into the new category. The meaning of the general codes for RELATE would remain the same, except that categories "1" through "12" would be strictly household members, and categories "13" and "14" would contain group quarters members (separated into institutional and non-institutional members).
In addition to the sharp differences between the pre-1940 and 1940-present periods, the definition of group quarters has changed in other years as well; see GQ for more information.
Note: The ACS and PRCS sampling frame did not include group quarters before 2006, and the 2000-2005 samples therefore lack the relationship categories that would be associated with persons in such living arrangements.
2. Category differences
Beginning in 1960, the census questionnaire provided a changing number of check boxes for specific relationships, followed by an open-ended write-in category. We believe the check boxes are likely to yield more reliable information. Users are encouraged to examine the relevant census forms to see which categories were written on the forms in particular censuses from 1960 to 2010. Prior to 1960 there were no pre-specified categories; all responses were open-ended.
Some of the following categories posed unique problems due to changing definitions and categories across census years:
Head/householder:
Spouse:
Child:
In-laws:
Partner/friend:
Other non-relatives:
3. Note on coding in the 1910 and 1920 Puerto Rican Census samples
Entries of "hijo/hija de crianza" were coded as foster child, and entries of "socios/business partners" were coded as non-relative in the 1910 and 1920 Puerto Rican Census samples.
Universe
- All persons.
Availability
- 2023: All samples
- 2022: All samples
- 2021: All samples
- 2020: All samples
- 2019: All samples
- 2018: All samples
- 2017: All samples
- 2016: All samples
- 2015: All samples
- 2014: All samples
- 2013: All samples
- 2012: All samples
- 2011: All samples
- 2010: All samples
- 2009: All samples
- 2008: All samples
- 2007: All samples
- 2006: All samples
- 2005: All samples
- 2004: All samples
- 2003: All samples
- 2002: All samples
- 2001: All samples
- 2000: All samples
- 1990: All samples
- 1980: All samples
- 1970: All samples
- 1960: All samples
- 1950: All samples
- 1940: All samples
- 1930: All samples
- 1920: All samples
- 1910: All samples
- 1900: All samples
- 1880: All samples
- 1870: All samples
- 1860: All samples
- 1850: All samples
- 2023: All samples
- 2022: All samples
- 2021: All samples
- 2020: All samples
- 2019: All samples
- 2018: All samples
- 2017: All samples
- 2016: All samples
- 2015: All samples
- 2014: All samples
- 2013: All samples
- 2012: All samples
- 2011: All samples
- 2010: All samples
- 2009: All samples
- 2008: All samples
- 2007: All samples
- 2006: All samples
- 2005: All samples
- 2000: All samples
- 1990: All samples
- 1980: All samples
- 1970: All samples
- 1930: All samples
- 1920: All samples
- 1910: All samples
Questionnaire Text
[ ] Opposite-sex unmarried partner
[ ] Same-sex husband/wife/spouse
[ ] Same-sex unmarried partner
[ ] Biological son or daughter
[ ] Adopted son or daughter
[ ] Stepson or stepdaughter
[ ] Brother or sister
[ ] Father or mother
[ ] Grandchild
[ ] Parent-in-law
[ ] Son-in-law or daughter-in-law
[ ] Other relative
[ ] Roommate or housemate
[ ] Foster child
[ ] Other nonrelative
[ ] Opposite-sex unmarried partner
[ ] Same-sex husband/wife/spouse
[ ] Same-sex unmarried partner
[ ] Biological son or daughter
[ ] Adopted son or daughter
[ ] Stepson or stepdaughter
[ ] Brother or sister
[ ] Father or mother
[ ] Grandchild
[ ] Parent-in-law
[ ] Son-in-law or daughter-in-law
[ ] Other relative
[ ] Roommate or housemate
[ ] Foster child
[ ] Other nonrelative
[ ] Opposite-sex unmarried partner
[ ] Same-sex husband/wife/spouse
[ ] Same-sex unmarried partner
[ ] Biological son or daughter
[ ] Adopted son or daughter
[ ] Stepson or stepdaughter
[ ] Brother or sister
[ ] Father or mother
[ ] Grandchild
[ ] Parent-in-law
[ ] Son-in-law or daughter-in-law
[ ] Other relative
[ ] Roommate or housemate
[ ] Foster child
[ ] Other nonrelative
[ ] Biological son or daughter
[ ] Adopted son or daughter
[ ] Stepson or stepdaughter
[ ] Brother or sister
[ ] Father or mother
[ ] Grandchild
[ ] Parent-in-law
[ ] Son-in-law or daughter-in-law
[ ] Other relative
[ ] Roomer or boarder
[ ] Housemate or roommate
[ ] Unmarried partner
[ ] Foster child
[ ] Other nonrelative
If a person is not related to Person 1, mark the applicable box. A "Roomer or boarder" is someone who occupies room(s) and makes cash or non-cash payment(s). A "Housemate or roommate" is someone sharing the house/apartment (but who is not romantically involved) with Person 1. An "Unmarried partner," also known as a domestic partner, is a person who shares a close personal relationship with Person 1. A "Foster child" is someone under the age of 21 who is involved in the formal foster care system. For all other people who are not related to person 1, mark the "Other nonrelative" box.
[ ] Biological son or daughter
[ ] Adopted son or daughter
[ ] Stepson or stepdaughter
[ ] Brother or sister
[ ] Father or mother
[ ] Grandchild
[ ] Parent-in-law
[ ] Son-in-law or daughter-in-law
[ ] Other relative
[ ] Roomer or boarder
[ ] Housemate or roommate
[ ] Unmarried partner
[ ] Foster child
[ ] Other nonrelative
If a person is not related to Person 1, mark the applicable box. A "Roomer or boarder" is someone who occupies room(s) and makes cash or non-cash payment(s). A "Housemate or roommate" is someone sharing the house/apartment (but who is not romantically involved) with Person 1. An "Unmarried partner," also known as a domestic partner, is a person who shares a close personal relationship with Person 1. A "Foster child" is someone under the age of 21 who is involved in the formal foster care system. For all other people who are not related to person 1, mark the "Other nonrelative" box.
[ ] Biological son or daughter
[ ] Adopted son or daughter
[ ] Stepson or stepdaughter
[ ] Brother or sister
[ ] Father or mother
[ ] Grandchild
[ ] Parent-in-law
[ ] Son-in-law or daughter-in-law
[ ] Other relative
[ ] Roomer or boarder
[ ] Housemate or roommate
[ ] Unmarried partner
[ ] Foster child
[ ] Other nonrelative
If a person is a stepchild or an adopted child of Person 1, mark the "Son or daughter" box.
If a person is not related to Person 1, mark the applicable box. A "Roomer or boarder" is someone renting a room/space in the house. A "Housemate or roommate" is someone sharing the house/apartment (but who is not romantically involved) with Person 1. An "Unmarried partner," also known as a domestic partner, is a person who shares a close personal relationship with Person 1. A "Foster child" is someone under the age of 18 who is involved in the formal foster care system. For all other people who are not related to person 1 mark "Other nonrelative".
[] Husband/Wife
[] Natural-born son/daughter
[] Adopted son/daughter
[] Stepson/stepdaughter
[] Brother/sister
[] Father/mother
[] Grandchild
[] Parent-in-law
[] Son-in-law/daughter-in-law
[] Other relative - Print exact relationship
[ ][ ][ ][ ][ ][ ][ ][ ][ ][ ][ ][ ][ ][ ][ ]
If NOT RELATED to Person 1:
[] Roomer, boarder
[] Housemate, roommate
[] Unmarried partner
[] Foster child
[] Other nonrelative
Fill ONE circle for each person. If Other relative of person in column 1, fill circle and print exact relationship, such as mother-in-law, grandparent, son-in-law, niece, cousin, and so on.
[Person 1 was not to answer this question.]
If a RELATIVE of Person 1:
[] Natural-born or adopted son/daughter
[] Stepson/stepdaughter
[] Brother/sister
[] Father/mother
[] Grandchild
[] Other relative:
____________________
If NOT RELATED to Person 1:
[] Housemate, roommate
[] Unmarried partner
[] Other nonrelative
"Fill one circle to show how each person is related to the person in column 1. If Other relative of the person in column 1, print the exact relationship such as son-in-law, daughter-in-law, grandparent, nephew, niece, mother-in-law, father-in-law, cousin, and so on. If the Stepson/stepdaughter of the person in column 1 also has been legally adopted by the person in column 1, mark Stepson/stepdaughter but do not mark Natural-born or adopted son/daughter. In other words, Stepson/stepdaughter takes precedence over Adopted son/daughter."
____________________
Wife
Daughter
Grandson
Mother-in-law
Lodger
Lodger's wife
Maid
Hired hand
Patient, etc.
110. Nonrelative of head.-For persons not related to the household head) enter a term such as "Lodger," "Partner," "Chauffeur," "Maid," "Hired man," "Employee," "Ward," "Foster child," etc. If you cannot find a specific term, enter "Lodger."
For lodgers, and for maids, hired hands, chauffeurs, etc., who may have relatives living with them in their employer's home, enter the relationship of the relatives to the lodger, maid, or hired hand. As examples, a lodger and his wife should be listed as "Lodger" and "Lodger's wife"; and a maid and her daughter, living in the home of the maid's employer, should be listed as "Maid" and "Maid's daughter."
111. Partners.-If two or more persons who are not related by blood,, marriage, or adoption share one dwelling unit as partners, write "Head" for one and "Partner" for the other(s).
Wife
Daughter
Grandson
Mother-in-law
Lodger
Lodger's wife
Maid
Hired hand
Patient, etc.
110. Nonrelative of head.-For persons not related to the household head) enter a term such as "Lodger," "Partner," "Chauffeur," "Maid," "Hired man," "Employee," "Ward," "Foster child," etc. If you cannot find a specific term, enter "Lodger."
For lodgers, and for maids, hired hands, chauffeurs, etc., who may have relatives living with them in their employer's home, enter the relationship of the relatives to the lodger, maid, or hired hand. As examples, a lodger and his wife should be listed as "Lodger" and "Lodger's wife"; and a maid and her daughter, living in the home of the maid's employer, should be listed as "Maid" and "Maid's daughter."
111. Partners.-If two or more persons who are not related by blood,, marriage, or adoption share one dwelling unit as partners, write "Head" for one and "Partner" for the other(s).
84. Item e-Hotel, large rooming house, institution, military installation, etc.-If you are enumerating the population of a hotel, a large rooming house, an institution, a military installation, etc., enter the full name of the place in the space provided.
In the space provided for "Type," enter the kind of place, such as "Hotel," "YMCA," "Army camp." If it is an institution, indicate the kind of person cared for and the kind of agency which operates the institution. For example: "State mental hospital," "Private home for the aged," "County poor farm," "Private nursing home," "State prison."
For each place, enter also the numbers of the lines which you use on that schedule for persons enumerated at the place.
Paragraph 89 shows a list of the kinds of places for which entries should be made in item e.
89. Special types of living quarters to be described in item e.-Following is a list of the types of places for which entries must be made under "Hotel, large rooming house, institution, military installation, etc.," in the heading of the schedule:
b. Other special types of living quarters:
2. Convents and monasteries.
3. Dormitories for workers.
4. Crew quarters on inland vessels.
5. Military installations.
6. College dormitories fraternity houses, and lodging houses devoted to students.
7. General hospitals.
8. Hotels, missions, "flophouses," etc.
9. Large lodging houses, residential clubs.
10. MCA YWCA, YMHA, YWHA.
11. Summer camps, tent camps, trailer camps, tourist courts, and motels.
12. School dormitories in schools below college level.
448. For lodgers, and for servants, hired hands, chauffeurs, etc., who may have relatives living with them in their employer's home, enter the relationship of the relatives to the lodger, servant, or hired hand. As examples, a lodger and his wife should be listed in col. 8 as "lodger" and "lodger's wife"; and a servant and her daughter, living in the home of the servant's employer, should be listed as "servant" and "servant's daughter."
449. Occupants of an institution, prison, school, etc., living in the institutional building or buildings, should be designated as officer, inmate, patient, pupil, etc.; and in the case of the chief officer, his title should be used, as superintendent, warden ,principal, etc., instead of the word "Head." Enter the prisoner's number in col. 8 for an inmate of a penal institution that identifies its prisoners by number; enter "prisoner" for a prisoner not identified by number.
450. For hotel households (see par. 425), enter the term that describes the relation of the person to the hotel, as manager, cashier, bellboy, housekeeper, guest, etc.
451. If two or more persons who are not related by blood or marriage share a common dwelling unit as partners, write head for one and partner for the other or others.
448. For lodgers, and for servants, hired hands, chauffeurs, etc., who may have relatives living with them in their employer's home, enter the relationship of the relatives to the lodger, servant, or hired hand. As examples, a lodger and his wife should be listed in col. 8 as "lodger" and "lodger's wife"; and a servant and her daughter, living in the home of the servant's employer, should be listed as "servant" and "servant's daughter."
449. Occupants of an institution, prison, school, etc., living in the institutional building or buildings, should be designated as officer, inmate, patient, pupil, etc.; and in the case of the chief officer, his title should be used, as superintendent, warden ,principal, etc., instead of the word "Head." Enter the prisoner's number in col. 8 for an inmate of a penal institution that identifies its prisoners by number; enter "prisoner" for a prisoner not identified by number.
450. For hotel households (see par. 425), enter the term that describes the relation of the person to the hotel, as manager, cashier, bellboy, housekeeper, guest, etc.
451. If two or more persons who are not related by blood or marriage share a common dwelling unit as partners, write head for one and partner for the other or others.
132. Home-maker.-Column 6 is to be used also to indicate which member of the family is the "home-maker," that is, which one is responsible for the care of the home and family. After the word "wife," "mother," or other term showing the relationship of such person to the head of the family, add the letter "H," thus: "Wife-H." Only one person in each family should receive this designation.
133. Occupants of an institution or school, living under a common roof, should be designated as officer, inmate, pupil, patient, prisoner, etc.; and in the case of the chief officer his title should be used, as warden, principal, superintendent, etc., instead of the word "head." Pupils who live at the school only during the school term are not usually to be enumerated at the school. (See par. 68.)
134. If two or more persons share a common abode as partners, write head for one and partner for the other or others.
135. In the case of a hotel or boarding or lodging house family (see pars. 123 and 124), the head of the family is usually the manager or the person who keeps the hotel or boarding or lodging house.
104. Occupants of an institution or school, living under a common roof, should be designated as officer, inmate, pupil, patient, prisoner, etc.; and in the case of the chief officer his title should be used, as warden, principal, superintendent, etc., instead of the word "Head."
___, Elizabeth.
___, J. Henry.
Editing Procedure
RELATE (Relationship to reference person) and MARST (Marital status)
ACS Years: 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
ACS editing procedure:
Note: There is an important change in 2013 in how the ACS addressed same-sex couples. The detailed editing and allocation process is described below. To briefly summarize: prior to 2013, RELATE and MARST would be edited to not include same-sex married couples. In 2013, same-sex married couples were included in the ACS and these editing rules were removed. Beginning in 2014, two parents and/or parents-in-law of the same sex were also allowed.
Note: The editing procedure for relationship to the reference person (RELATE) and marital status (MARST) in part depend on the original order of people in the household. This information is not available in public use data.
If a person is living in a 1-person household and their marital status (MARST) is missing, it will be allocated from another person in a 1-person household of the same sex (SEX) and similar age (AGE). When this happens, the flag variable will indicate the value of MARSTwas allocated (QMARST).
If there is someone in the household who is older than 14 (AGE), is the spouse of the reference person (RELATE), is a different sex than the reference person (only applies prior to 2013), but the reference person's marital status is missing or something other than "Married", the reference person's marital status will be changed to "Married." When this happens, the flag variable will indicate the value of MARST was allocated (QMARST).
If there is someone in the household who is older than 14 (AGE) and is the unmarried partner or the same-sex spouse of the reference person (only applies prior to 2013), and the reference person's marital status is "Married" or missing, the reference person's marital status will be allocated. The allocated value will be drawn from another reference person who is the same sex, similar age, and also living in a household with an unmarried partner who has a marital status of widowed, divorced, separated, or never married. When this happens, the flag variable will indicate the value of MARST was allocated (QMARST).
Only applies prior to 2013: For people who are listed as the reference person's spouse and are 15 or older, if the spouse is the same sex as the reference person the RELATE value will be replaced with "Unmarried partner." If they are listed as "Married" marital status will be allocated from another person who is the same sex, similar age, and an unmarried partner who has a marital status of widowed, divorced, separated, or never married.
If a person under 15 is listed as a "Housemate/roommate," RELATE will be replaced with "Roomer/boarder" or "Other non-relative" (alternating between the two values). When this happens, the flag variable will indicate the value of RELATE was allocated (QRELATE).
If a person over 18 (in 2008 and later: over 21) or who is not "never married" is listed as a "Foster child," RELATE will be replaced with "Roomer/boarder" or "Other non-relative" (alternating between the two values). When this happens, the flag variable will indicate the value of RELATE was allocated (QRELATE).
There are numerous situations that will cause a person's RELATE value to be allocated.
- A person under 15 is listed as a "Spouse"
- Beginning in 2010: A person listed as "Spouse" who is 50 or more years old/younger than the reference person.
- A "Son/daughter" is not 12 to 69 years younger than a male reference person or 12 to 50 years younger than a female reference person
- In 2008 and later: A son- or daughter-in-law who is less than 15 years old.
- A "Brother/sister" is more than 35 years older or younger than the reference person
- A "Father/mother" is less than 12 years older than the reference person
- In 2008 and later: A "Parent-in-law" is less than 12 years older than the reference person
- Prior to 2014: A "Father/mother" if there is more than one person with the same sex listed as a "Mother/father" (e.g., a household has two fathers of the reference person). In 2014 and later, this occurs if there are more than two parents of the same sex.
- In 2008 to 2013: A "Parent-in-law" if there are more than one person with the same sex listed as a "Parent in law" (e.g., the reference person has two fathers-in-law) In 2014 and later, this occurs if there are more than two parent-in-laws of the same sex.
- A "Grandchild" is less than 30 years younger than the reference person
- An "Unmarried partner" or "Spouse" if there is another person in the household with this RELATE value (the person who comes first in the household record retains their RELATE value; the RELATE of the person who comes later in the household record will be allocated)
- An "Unmarried partner" when the reference person married, when the unmarried partner is married, or when the unmarried partner is under 15
- Beginning in 2010: An "Unmarried partner" who is 50 or more years younger/older than the reference person
- If a person's RELATE value is missing, both this person and the reference person are married, and this person and the reference person are different sex, then RELATE will be replaced with Husband/Wife. In 2010 and later, this step also requires the person being no more than 50 years younger/older than the reference person. In all other cases, a missing RELATE value will be allocated.
When RELATE is allocated, it will be drawn from another person who:
- Is the same sex as the person whose RELATE is being allocated
- Is in the same broad age range (15 or 15+)
- Has a similar age difference between themselves and the household reference person
- Lives in a household with a reference person that is the same sex and marital status as the reference person in the household of the person whose RELATE is being allocated.
The above allocations will be looped through at least twice. After these allocations, final corrections are made for relative age:
- A "Son/daughter" with an age that is less than 12 years younger than the reference person, will be replaced with "Brother/sister" or "Other relative" (alternating between the two values).
- A "Son/daughter" with an age that is more than 50 years younger than the reference person, will be replaced with "Grandchild" or "Other relative" (alternating between the two values).
- Prior to 2008: "Brother/sister" with an age that is more than 35 years older or younger than the reference person, will be replaced with "In-law" or "Other relative" (alternating between the two values).
- In 2008 and later: "Brother/sister" with an age that is more than 35 years older or younger than the reference person, will be replaced with "Other relative"
- A "Grandchild" with an age that is less than 30 years younger than the reference person will be replaced with "Brother/sister" or "Other relative" (alternating between the two values).
The flag variable will indicate the value of RELATE was allocated (QRELATE).
After these edits, MARST will be changed if necessary to be consistent with RELATE. If the spouse of the reference person is not listed as "Married," MARST will be replaced with "Married." Anyone who is under 15 and is not the reference person or the reference person's spouse will be listed as "Never married." Any "Foster child" will be listed as "Never married."
In 2008 and later: If a son- or daughter-in-law is "Never married," MARST will be allocated from another son- or daughter-in-law with the same sex and a similar age.
If someone has a missing value of MARST it will be allocated if the person is 15 or older and whose value of RELATE is son/daughter, brother/sister, father/mother, grandchild, in-law, other relative, room/boarder, housemate/roommate, nonrelative, or unmarried partner. The allocated value will be from another person who is the same sex, has the same value of RELATE, and is a similar age. If an unmarried partner (RELATE) has a value of "Married" for MARST it will be allocated from another unmarried partner who is the same sex and a similar age.
The flag variable will indicate when the value MARST is allocated (QMARST)
Internal ACS variable : REL and MAR