American FactFinder provides access to data about the United States, Puerto Rico and the Island Areas. The data in American FactFinder come from several censuses and surveys.
Use these maps to locate and see the boundaries of enumeration units such as Census-designated places (CDPs), Census tracts, block groups, blocks, counties, Hawaiian home lands, zip code tabulation areas (ZCTAs), political subdivisions, and more.
If you don't know your census tract number, your block group number, or your block number, click on the link below for a step by step tutorial on how to find this information: