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

ADoodle
Owlie
LettuceMeet
Civic Loop
SynthBoard
Avenor
ttakPick
Loomio helps groups of people make decisions together, online.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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|---|---|---|
| Website | zip-codes.com | loomio.com |
| Pricing | — | |
| Company | Startup from the United States · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.

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...
No description of Loomio yet.
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When comparing ZIP Code API and Loomio, you can also consider the following products.

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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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A beautiful app for quick decision making with friends
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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The easiest way to schedule group meetings.
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