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CITYPOP
City population

Description

CITYPOP reports the population, in hundreds, for all identifiable cities.

For Decennial Census samples, CITYPOP reports the counts collected in that Decennial Census.

For the 2005 ACS sample, CITYPOP reports populations estimates derived for the 2005 ACS.

For ACS samples from 2006-2011, CITYPOP reports population estimates derived from the 2006 ACS.

For the 2012-onward ACS, CITYPOP reports population estimates derived from the ACS of that year.

Codes

CITYPOP is a 5-digit numeric variable that reports the population, in hundreds, for all identifiable cities. For instance, a city having a population of 1,234,500 will have a CITYPOP value of 12345. For all samples prior to 1940 and the 1940 100% dataset, CITYPOP reports the population for all incorporated municipalities. For 1940 to 2000 and in the American Community Survey samples of 2005-onward, CITYPOP reports the population for all cities and areas that can be identified in the variable CITY. CITYPOP 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 if applicable by Census year (and data sample if specified).

CITYPOP Specific Variable Codes
00000 = City not identified or unincorporated place
99999 = Missing

Comparability

For all samples prior to 1940 and the 1940 100% dataset, CITYPOP reports the population for all incorporated municipalities. For 1940 1% to 2000 and in the American Community Survey samples of 2005-onward, CITYPOP reports the population for all cities and areas that can be identified in the variable CITY.

Beginning in 1940 1%, the number of identifiable cities is severely limited by confidentiality rules that were in effect when CITYPOP was constructed that suppress geographic identifiers for areas with less than 100,000 (or more) residents. For 1940 1%, population counts for all incorporated municipalities with more than 2,500 people can be found using the variable URBPOP. Also see the CITY variable description for further description and discussion of comparability issues.

In 1940 1% and 1950, several cities cannot be identified individually. The IPUMS assigns all households in the following cities the weighted average of the cities' populations in those years:

Albany, Schenectady, and Troy, NY
Allentown and Bethlehem, PA
Beaumont and Port Arthur, TX
Hamilton and Middletown, OH
Little Rock and North Little Rock, AR
Lorain and Elyria, OH
Minneapolis and St. Paul, MN
New York, NY, Newark, Jersey City, and Paterson, NJ
Norfolk and Portsmouth, VA
San Francisco and Oakland, CA
Springfield and Holyoke, MA
Tampa and St. Petersburg, FL
Utica and Rome, NY

See the comparability discussion in CITY for more information about the identification of these cities. The weighted average is calculated by weighting the population of each individual city by its proportion of the total population of the combined central cities.

Universe

  • All households and group quarters in identifiable cities. Not available for Puerto Rico in 1910-1920.

Availability

United States
  • 2016: ACS
  • 2015: ACS
  • 2014: ACS
  • 2013: ACS
  • 2012: ACS
  • 2011: All samples
  • 2010: All samples
  • 2009: All samples
  • 2008: All samples
  • 2007: All samples
  • 2006: All samples
  • 2005: All samples
  • 2004: --
  • 2003: --
  • 2002: --
  • 2001: --
  • 2000: 5%; 1% old; 1% unwt; 1%
  • 1990: 5%; 1%; 1% unwt; 3% elderly
  • 1980: 5% state; 1% metro; 1% urban
  • 1970: --
  • 1960: --
  • 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
Puerto Rico
  • 2016: --
  • 2015: --
  • 2014: --
  • 2013: --
  • 2012: --
  • 2011: --
  • 2010: --
  • 2009: --
  • 2008: --
  • 2007: --
  • 2006: --
  • 2005: --
  • 2000: --
  • 1990: --
  • 1980: --
  • 1970: --
  • 1930: All samples
  • 1920: --
  • 1910: --

Flags

QCITY 

Editing Procedure

There is no editing procedure available for this variable.