*New* IPUMS Data Updates: ACS and PRCS, NHGIS, and CPS

Posted: 3/19/2026 (Demography News)

IPUMS released multiple data updates, including ACS and PRCS data, NHGIS data, and CPS data.

IPUMS USA

The 2023 5-year Public Use Microdata Sample (PUMS) data for the ACS and PRCS are now available on IPUMS USA. See the IPUMS USA revision history for more details

IPUMS NHGIS

IPUMS NHGIS has released its second version of GIS boundary data for 1970 census blocks. This release adds blocks for 17 metro areas, including Los Angeles, Pittsburgh, St. Louis, Houston, Newark, Seattle, Atlanta, San Diego, Buffalo, Miami and Nashville. The total count of metro areas with 1970 block boundary data is now 38, including 21 of the top 25 by 1970 population.

IPUMS CPS

IPUMS CPS has added the February 2026 basic monthly data. Note that the January 2026 basic monthly data were re-released by the Census Bureau last week; the originally released version did not account for new population controls (see our blog post on weighted counts in January CPS to learn more). We are working on updating the affected variables, which include weights as well as some geographic and earnings variables. We will update the IPUMS CPS revision history as soon as the data become available.