
Register to Vote
Vote.org
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HelloVote
Votedash
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Smarty
Zipcodestack
PostalDataPI
Geoco.io
Melissa Data Quality
Loqate
usZIPCodes.org
REST API for US ZIP, ZIP+4, and Canadian postal codes. Single unified endpoint covers address validation and standardization, radius search (centroid haversine and true spatial polygon intersection), point-to-point distance, autocomplete/typeah

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ZIP
ZIP Code API
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| Website | btc18.org | zip-codes.com |
| Company | β | Startup from the United States Β· 2026 |
| Listed in |
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No description of BTC18 yet.
API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America β no separate APIs by country or data type. What it does Address validation and standardization β production-grade parser with ZIP+4 append, refreshed monthly Radius search β centroid haversine and...
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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