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Fast, accurate postal code data for developers.

Address validation, radius search, autocomplete, demographics, and more. One REST API for the U.S. and Canada.

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2,500 free credits / day

500+ enrichment fields

14 yrs historical ACS data

0 credit cards to start

Everything You Need

One API for ZIP codes, postal codes, demographics, and more.

Address Validation

Validate and standardize US street addresses with USPS ZIP+4 matching. Accepts messy input, returns clean structured output. Drop-in replacement for USPS Web Tools.

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Radius Search

Find every ZIP code within any radius. Centroid for speed, spatial for precision — with boundary intersection percentages.

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Smart Autocomplete

Real-time typeahead for ZIP codes, cities, and counties. Fuzzy matching handles misspellings automatically.

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ZIP Code & Postal Lookup

Instant details for any US ZIP code or Canadian postal code: city, state, county, coordinates, and timezone.

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ACS Demographics

Census demographic, social, economic, and housing data. 500+ fields from the American Community Survey, 14 years of history.

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Distance Calculation

Calculate the precise distance between any two US or Canadian postal codes. Great for shipping estimates and store locators.

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