National Gentrification Intensity Map

This replication data supports multiple publications related to the National Gentrification Intensity Map project. The project seeks to map degrees of gentrification intensity across a national geography of cities and a diverse set of neighborhood types. The map uses open-source tools and open data APIs to build a longitudinal tract database of gentrification indicators. There are two products: 1) Gentrification patterns 1990-2020: Gentrification indicators from 1990 to 2020, adjusted to 2020 census tract boundaries. This is based on Decennial Census and American Community Survey data, drawn from National Historical GIS using the IPUMS API. Crosswalks are based on the NHGIS Geographic Crosswalk methodology. It covers ~56,000 census tracts in ~880 core-based statistical areas, with all data crosswalked to 2020 census boundaries. We recommend using this version of the map for most applications. 2) Historic data 1970-2020: Gentrification indicators from 1970 to 2020, adjusted to 2010 census tract boundaries. This is based on Decennial Census and American Community Survey data, drawn from from National Historical GIS using the IPUMS API. Crosswalks are based on methods from both NHGIS Geographic Crosswalks and the Longitudinal Tract Data Base. It covers ~49,500 census tracts in ~860 core-based statistical areas, with all data crosswalked to 2010 census boundaries. While this map may be useful for historical research, we do not recommend using it for most applications due to spatial noise introduced through the geographic crosswalking method.