IPUMS NHGIS | National Historical Geographic Information System
Access historical U.S. population, housing, and economic data with GIS mapping files from 1790 to present for research, analysis, and mapping projects.
Explore centuries of U.S. census and mapping data
IPUMS NHGIS is your go-to site for exploring historical and contemporary U.S. census data. Here, you can easily access summary tables and time series covering population, housing, agriculture, and economic statistics from as early as 1790. The platform also provides GIS-compatible mapping files, letting you visualize and analyze data for states, counties, tracts, and blocks across different time periods.
Whether you're a student, researcher, or anyone interested in demographic trends, NHGIS makes it simple to browse, select, and download the data you need. You can use the site’s tools to work with data in your favorite formats, and even access it programmatically via API or in R and Python. It’s a helpful resource for anyone looking to study changes in U.S. communities over time or create custom maps for projects and reports.
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