An official website of the United States government
Here’s how you know
Official websites use .gov A
.gov website belongs to an official government
organization in the United States.
Secure .gov websites use HTTPS A
lock (
) or https:// means you’ve safely connected to
the .gov website. Share sensitive information only on official,
secure websites.
Data Files – CSV and SAS; Geospatial Data Files (ESRI Shapefile, GeoJSON, KML); Documentation; Annual Report; Supplementary Tables; Data Element Definitions; and News Release.