1020 ConsPUMA Definitions
The CPUMA1020 variable supplies codes for the 1020 version of ConsPUMAs (Consistent Public Use Microdata Areas). Each 1020 ConsPUMA is an aggregation of one or more 2020 PUMAs (Public Use Microdata Areas) that, in combination, align closely (within a 1% population error tolerance) with a corresponding set of 2010 PUMAs.
The 1020 ConsPUMAs are effectively the smallest geographic units that can be consistently identified from the geographic codes available in U.S. Census PUMS for 2012 through 2031 samples.
Different versions of ConsPUMAs correspond to different vintages of PUMAs. The 0010 version represents areas that are consistent among 2000 and 2010 PUMAs. Other variables represent areas consistent among different vintages of PUMAs:
- CPUMA0010 identifies sets of 2000 PUMAs and 2010 PUMAs that comprise comparable populations for samples from the 2000 5% sample and 2005 through 2021 ACS and PRCS samples.
- CONSPUMA identifies sets of 1980 county groups and 1990 and 2000 PUMAs that comprise comparable populations for samples from 1980 through 2011.
Web Map of 2000-2010 and 2010-2020 Consistent PUMAs
The map below shows the boundaries of 2010-2020 ConsPUMAs (in blue) and 2000-2010 ConsPUMAs (in orange), along with 2000, 2010, and 2020 PUMA boundaries. Clicking on the map will highlight and identify the ConsPUMAs and PUMAs for the selected location. You can select which boundaries you want to view in the Layer List, accessed through the button at the top left.
Composition and Relationship Files
Details on the composition of 1020 ConsPUMAs are provided in Excel spreadsheets via the following links. Each file contains two worksheets: the first contains the main table, and a second "data_dictionary" sheet describes the data fields in the main table.
- CPUMA1020 Summary: Summary of 1020 ConsPUMAs, including counts of associated 2010 and 2020 PUMAs, 2010 and 2020 populations, and population mismatch errors
- CPUMA1020 2020 PUMA Components: Complete listing of the 2020 PUMAs that comprise each 1020 ConsPUMA
- CPUMA1020 2010 PUMA Assignments: Complete listing of the 2010 PUMAs that are assigned to each 1020 ConsPUMA
- 2010-2020 PUMA Crosswalk: Crosswalk of 2010 PUMAs to 2020 PUMAs, including 2010 population, 2020 population, land area, and 1020 ConsPUMA codes for each area of intersection
For the specific counties, places, and tracts that comprise each PUMA, see the composition pages for 2010 PUMAs and 2020 PUMAs.
Boundary File
- 1020 ConsPUMAs (shapefile within a .ZIP file)
Basis
To construct the 1020 ConsPUMA boundary file and to determine associations between 2010 blocks and 2020 PUMAs and between 2020 blocks and 2010 PUMAs (for the computation of populations and mismatch errors), we used NHGIS Geographic Crosswalks. We then compute the percent omission error (the percent of 2020 PUMAs' population that resides outside of 2010 PUMAs) and percent commission error (the percent of 2010 PUMAs' population that resides outside of 2020 PUMAs) for each ConsPUMA. We sum these two statistics to obtain final mismatch scores.
Supported By
