
Every Voice
#DefeatByTweet
Polis
Trump Twitter Archive
Field the Bern
Engage Spaces
Campaign Toolbox
Hillary is running for president
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 Code API
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| Website | hillaryclinton.com | zip-codes.com |
| Company | — | Startup from the United States · 2026 |
| Listed in |
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API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America — no separate APIs by country or data type. What it does Address validation and standardization — production-grade parser with ZIP+4 append, refreshed monthly Radius search — centroid haversine and...
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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