GeoFlow

Append county · congressional district · state senate / assembly · timezone · lat-lng to any U.S. address list — powered by free official U.S. Census Bureau data. Your file never leaves this page except the address text sent to the Census Geocoder API.

1 · Input

2 · Run

idle · rate limited to 4 req/s (Census guideline)
probing census.gov reachability…

3 · Results

Input addressStatusCounty FIPSCongressionalSLDU (Senate)SLDL (Assembly)Timezone

Downloaded CSV contains all fields: matched address, lat/lng, state FIPS/abbr, county FIPS/name, congressional district (GEOID + name), SLDU, SLDL, timezone, match status.
NO_MATCH? The Census Geocoder needs a street address. Common causes: PO Boxes, ZIP-only or city-only lines, and non-U.S. addresses. Misspellings and wrong ZIPs are usually auto-corrected. Hover an ERROR row for details.

Pricing

Free
$0
  • Up to 100 addresses per run
  • All output fields (county, congressional, SLDU/SLDL, timezone)
  • CSV download
 Credits pack
$9 one-time
  • 1,000 addresses per run
  • Same fields, no subscription
  • Processed locally in your browser — address lists are never stored on our servers

Prices include applicable taxes. Payments are handled by Creem (Merchant of Record). You will be redirected to a secure checkout page.