Explore Maps

U.S. Demography

Explore 220 years of demographic data with over 20,000 socio-economic indicators between 1790 and the present. Includes all decennial censuses, American Community Surveys, and two religion surveys.

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Old version available here →

Ireland Religion Data

Explore Irish religion and population data from 1911 to 2001 through decades of political change. These data and geographies were compiled by Professor Ian Gregory of Lancaster University, from Religious change in twentieth century Ireland: A spatial history.

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Election Data

Visualize United States election results from 2004 to 2012. Presidential, senatorial, congressional and gubernatorial election data come from Dave Leip's Atlas of U.S. Presidential Elections. These data are available for map presentation only. (Additional historical election data coming soon.)

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