Census Bureau
US Census Bureau data API for address geocoding, Census geographies, demographic statistics, and Puerto Rico address coverage.
Fits research and civic apps that geocode single or bulk addresses, resolve coordinates to Census tracts and blocks, and pull demographic statistics.
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Example Use Cases
These are example ways Snow can use Census Bureau when building apps with you. This list is meant to show examples, not document every possible capability. Connecting an account does not make Snow run these automatically on its own.
Batch geocode multiple addresses from a CSV file and return Census geography codes. Tool to geocode up to 10,000 addresses at once from a CSV file. Use when you need to convert addresses to geographic coordinates (latitude/longitude) and retrieve associated Census geography identifiers (state, county, tract, block FIPS codes). Input CSV format: Unique ID, Street address, City, State, ZIP Returns: Original data plus match status, coordinates, and geographic codes.
Tool to geocode a single address to get latitude/longitude coordinates. Use when you need to convert a street address into geographic coordinates.
Geocode an address and return Census geography identifiers including state, county, tract, block group, and block FIPS codes. This tool converts a physical address into geographic coordinates and returns detailed Census geography information including FIPS codes for various geographic levels (state, county, census tract, block group, block) plus additional geographies like congressional districts, places, and statistical areas. Use this when you need to link an address to Census geographic identifiers for data analysis or geographic queries.
Tool to geocode an address using separate components (street, city, state, ZIP) to get latitude/longitude coordinates. Use when you have address data in separate fields rather than a single line.
Tool to geocode an address and return both coordinates and Census geography information. Use when you need geographic coordinates plus Census geographic identifiers like state FIPS, county FIPS, census tract, and block codes.
Reverse geocode latitude/longitude coordinates to Census geographic areas. Takes decimal degree coordinates and returns associated Census geographies including states, counties, tracts, blocks, congressional districts, and other Census-defined geographic boundaries. Use this tool to identify what Census geographic areas a specific location falls within. Note: This uses the Census Geocoding Services API, which has a different base URL than the standard Census data API (uses geocoding.geo.census.gov).
Tool to geocode a Puerto Rico address with urbanization to latitude/longitude coordinates. Use when geocoding addresses in Puerto Rico that include urbanization or municipio components.
Tool to geocode a Puerto Rico address and return coordinates plus Census geography data. Use for Puerto Rico addresses when you need geographic coordinates and Census identifiers like state, county, tract, and block codes. Supports urbanization names specific to Puerto Rico addressing.
Tool to retrieve 1-year American Community Survey (ACS) estimates for a specified geography. Use when you need the most recent annual ACS data for a given area.
Retrieve 5-year American Community Survey (ACS) estimates from the U.S. Census Bureau. The ACS 5-year estimates provide reliable data for all geographic areas by combining 5 years of survey data. Use this tool to get population demographics, income statistics, housing characteristics, and other socioeconomic data at various geographic levels (nation, state, county, tract, place, metro area, etc.). Returns data as a list of rows where the first row contains column headers (variable names and geography identifiers) and subsequent rows contain the data values.