Description

CITYERR identifies the level of mismatch error between each CITY code and the corresponding city.

CITY's code assignment protocol yields errors of omission (where a CITY code is not assigned to some residents of the corresponding city) and errors of commission (where a CITY code is assigned to some non-residents of the city). As an index of mismatch for each CITY code, IPUMS uses the sum of percent omission error (the portion of a city's population residing in excluded PUMAs) and percent commission error (the portion of the population in associated PUMAs that did not reside in the city).

For each reported CITY code in 1990 and later samples, CITYERR identifies the level of the sum of errors.

To ensure that CITY codes are generally representative of city populations, cities are identified only where the sum of match errors is less than 10%. Researchers may use CITYERR to impose a more restrictive error limit if desired.

For more detailed information about PUMA-city relationships and CITY match errors, IPUMS provides these tables (in Excel spreadsheets):

• Crosswalk Between Large Places (>75,000 Population) and 2020 PUMAs

• PUMA Match Summary by Large Place (>75,000 Population)

• Crosswalk Between Large Places (>75,000 Population) and 2010 PUMAs

• PUMA Match Summary by Large Place (>75,000 Population)

• Crosswalk Between Very Large Places (>300,000 Population) and 2000 Super-PUMAs

• SuperPUMA Match Summary by Very Large Place (>300,000 Population)

• Crosswalk Between Large Places (>75,000 Population) and 2000 PUMAs

• PUMA Match Summary by Large Place (>75,000 Population)

• Crosswalk Between Large Places (>75,000 Population) and 1990 5% PUMAs

• PUMA Match Summary by Large Place (>75,000 Population)

• Crosswalk Between Large Places (>75,000 Population) and 1990 1% PUMAs

• PUMA Match Summary by Large Place (>75,000 Population)

Comparability

This variable is completely comparable across samples.

Universe

Availability

• 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: --
• 2003: --
• 2002: --
• 2001: --
• 2000: 5%; 1% old; 1% unwt; 1%
• 1990: 5% state; 1% metro; 1% unwt; 3% elderly
• 1980: --
• 1970: --
• 1960: 5%
• 1950: --
• 1940: --
• 1930: --
• 1920: --
• 1910: --
• 1900: --
• 1880: --
• 1870: --
• 1860: --
• 1850: --

• 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: PRCS
• 2007: All samples
• 2006: All samples
• 2005: All samples
• 2000: All samples
• 1990: --
• 1980: --
• 1970: --
• 1930: --
• 1920: --
• 1910: --

Flags

Editing Procedure

There is no editing procedure available for this variable.