- Description
- Codes
- Comparability
- Universe
- Availability
- Questionnaire Text
- Flags
- Source Variables
- Editing Procedure
Description
MIGDIST1 is a constructed variable that reports the distance, in miles, between counties of residence, for sample-line, inter-county migrants for whom place of residence one year ago was ascertained.
The calculated distance in MIGDIST1 is the number of miles between the counties' 1970 centers of population. The latitude and longitude of the points were used in the following formula:
MIGDIST1 = 69.055 * ACOS [(SIN(LATA) * SIN(LATB)) + (COS(LATA) * COS(LATB) * COS(LONA - LONB))]
where:
LONA = longitude of 1949 county
LATB = latitude of 1950 county
LONB = longitude of 1950 county
MIGDIST1 is a 4-digit numeric code reporting the distance, in miles, between counties of residence, for sample-line, inter-county migrants for whom place of residence one year ago was ascertained. MIGDIST1 specific variable codes for missing, edited, or unidentified observations, observations not applicable (N/A), observations not in universe (NIU), top and bottom value coding, etc. are provided below by Census year (and data sample if specified).
MIGDIST1 Specific Variable Codes
9997 = Not inter-county mover
9998 = Not ascertained
9999 = N/A
Comparability
This variable is only available for 1950. For 1940, MIGDIST5 provides analogous information on the distance between counties of residence 5 years ago, for inter-county migrants age 5+.
Universe
- Sample-line persons age 1+.
Availability
- 2023: --
- 2022: --
- 2021: --
- 2020: --
- 2019: --
- 2018: --
- 2017: --
- 2016: --
- 2015: --
- 2014: --
- 2013: --
- 2012: --
- 2011: --
- 2010: --
- 2009: --
- 2008: --
- 2007: --
- 2006: --
- 2005: --
- 2004: --
- 2003: --
- 2002: --
- 2001: --
- 2000: --
- 1990: --
- 1980: --
- 1970: --
- 1960: --
- 1950: 1%
- 1940: --
- 1930: --
- 1920: --
- 1910: --
- 1900: --
- 1880: --
- 1870: --
- 1860: --
- 1850: --
- 2023: --
- 2022: --
- 2021: --
- 2020: --
- 2019: --
- 2018: --
- 2017: --
- 2016: --
- 2015: --
- 2014: --
- 2013: --
- 2012: --
- 2011: --
- 2010: --
- 2009: --
- 2008: --
- 2007: --
- 2006: --
- 2005: --
- 2000: --
- 1990: --
- 1980: --
- 1970: --
- 1930: --
- 1920: --
- 1910: --
Flags
QMIGDIS1Source Variables
Some unharmonized variables may not be available.
Variable |
Variable Label |
Type | Codes | Sample | |
|---|---|---|---|---|---|
| US1950A_MIGDIS | Mileage between 1949 and 1950 counties of residence | P | codes | 1950 1% |
Editing Procedure
There is no editing procedure available for this variable.