Geographically standardized time series tables from IPUMS NHGIS give users powerful new abilities to analyze census tables and geographic data across time.
NHGIS time series tables link together comparable statistics from multiple U.S. censuses. Geographic standardization refers to harmonizing data from separate censuses to align with a consistent set of geographic boundaries. At this time, NHGIS provides 1990, 2000, and 2010 data harmonized to 2010 census units. Subsequent releases of American Community Survey (ACS) summary data also generally use 2010 census units, making it possible to link NHGIS time series directly to ACS data for any year since 2010.
In this post, we apply this innovative NHGIS data product to explore homeownership rates in the Twin Cities (Minneapolis–Saint Paul, Minnesota), comparing rates of homeownership between black and white householders for 1990, 2000, 2010 and 2013-2017 ACS 5-Year Estimates.