Public Use Microdata Area geography and attributes are available in the following shapefile: Public Use Microdata Area (PUMA) State-based shapefile (2020 Census) PUMAs are decennial census areas that permit the tabulation and dissemination of Public Use Microdata Sample (PUMS) data, American Community Survey (ACS) data, and data from other censuses and surveys. For the 2020 Census, the State Data Centers (SDCs) in each state, the District of Columbia, and the Commonwealth of Puerto Rico had the opportunity to delineate PUMAs within their state or statistically equivalent entity. All PUMAs must nest within states and have a minimum population threshold of 100,000 persons. 2020 PUMAs consist of census tracts and cover the entirety of the United States, Puerto Rico, and Guam. American Samoa, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands do not contain any 2020 PUMAs because the population is less than the minimum population requirement. The 2020 PUMAs will appear in the 2023 TIGER/Line Shapefiles. For detailed information about PUMAs, please visit the PUMAs website at: <https://www.census.gov/programs-surveys/geography/guidance/geo-areas/pumas.html> See Appendix O-1 Public Use Microdata Area (PUMA) State-based Record Layout.

The TIGER/Line Files are to tl_2022_06_puma20.shp was downloaded from https://www.census.gov/cgi-bin/geo/shapefiles/index.php.

Features in San Diego County boundary were projected to NAD 83 State Plane.