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Federal
1940 Census: Official 1940 Census Website
National Archives and Records Administration —
Website alows the public full access to the 1940 Census images, census maps and descriptions. -
Zip Codes
District of Columbia —
Zip Codes (5-digit). The dataset polygons represent location and attributes of zip codes, created as part of the DC Geographic Information System (DC GIS) for the D.C.... -
Federal
Medicare Inpatient Hospitals - by Provider and Service
U.S. Department of Health & Human Services —
The Medicare Inpatient Hospitals by Provider and Service dataset provides information on inpatient discharges for Original Medicare Part A beneficiaries by IPPS... -
Bias Crime
District of Columbia —
It is important for the community to understand what is – and is not – a hate crime. First and foremost, the incident must be a crime. Although that may seem obvious,... -
Federal
National Solar Radiation Database (NSRDB)
Department of Energy —
The National Solar Radiation Database (NSRDB) is a serially complete collection of meteorological and solar irradiance data sets for the United States and a growing... -
Federal
Supplemental Nutrition Assistance Program (SNAP) Data System
Department of Agriculture —
Note: The Food Environment Atlas contains ERS's most recent and reliable data on food assistance programs, including participants in the SNAP Program. The... -
DC Office of Tax and Revenue Real Property Assessment Map App
District of Columbia —
The DC Office of the Chief Financial Officer (OCFO), Office of Tax and Revenue (OTR), Real Property Tax Administration (RPTA) values all real property in the District... -
County
Allegheny County Property Viewer
Allegheny County / City of Pittsburgh / Western PA Regional Data Center —
Webmap of Allegheny municipalities and parcel data. Zoom for a clickable parcel map with owner name, property photograph, and link to the County Real Estate website... -
Federal
Census Data
Department of Housing and Urban Development —
The Bureau of the Census has released Census 2000 Summary File 1 (SF1) 100-Percent data. The file includes the following population items: sex, age, race, Hispanic or... -
Federal
Medicare Provider and Supplier Taxonomy Crosswalk
U.S. Department of Health & Human Services —
The Medicare Provider and Supplier Taxonomy Crosswalk dataset lists the providers and suppliers eligible to enroll in Medicare programs with the proper healthcare... -
Federal
NIST Chemistry WebBook - SRD 69
National Institute of Standards and Technology —
The NIST Chemistry WebBook provides users with easy access to chemical and physical property data for chemical species through the internet. The data provided in the... -
City
1.08 Crash Data Report (detail)
City of Tempe —
Please note that 2025 data are incomplete and will be updated as additional records become available. Data are complete through 12/31/2024. Fatal and serious injury... -
Building Footprints
District of Columbia —
Building structures include parking garages, ruins, monuments, and buildings under construction along with residential, commercial, industrial, apartment, townhouses,... -
Federal
Medicare Telehealth Trends
U.S. Department of Health & Human Services —
The Medicare Telehealth Trends dataset provides information about people with Medicare who used telehealth services between January 1, 2020 and June 30, 2024. The... -
Grocery Store Locations
District of Columbia —
This dataset was originally created in 2012 by the Office of the Chief Technology Officer. OCTO staff used the Alcoholic Beverage and Cannabis Administration’s (ABCA)... -
Felony Sentences
District of Columbia —
This dataset contains all felony counts sentenced from 2010 onward and includes offender demographic information such as gender, race, and age, as well as sentencing... -
Federal
School District Characteristics - Current
Department of Education —
The National Center for Education Statistics’ (NCES) Education Demographic and Geographic Estimate (EDGE) program develops annually updated school district boundary... -
Federal
NOAA Next Generation Radar (NEXRAD) Level 2 Base Data
National Oceanic and Atmospheric Administration, Department of Commerce —
This dataset consists of Level II weather radar data collected from Next-Generation Radar (NEXRAD) stations located in the contiguous United States, Alaska, Hawaii,... -
County
Redlining Maps from the Home Owners Loan Corporation, 1937
Allegheny County / City of Pittsburgh / Western PA Regional Data Center —
Most of the text in this description originally appeared on the Mapping Inequality Website. Robert K. Nelson, LaDale Winling, Richard Marciano, Nathan Connolly, et...