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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

Which is more popular?
Based on our record, Clearscope seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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Clearscope
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ZIP
ZIP Code API
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|---|---|---|
| Website | clearscope.io | zip-codes.com |
| Pricing | — | |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.
No description of Clearscope yet.
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...
What each product offers, as listed by its team.
Possible disadvantages
An editorial look at what each product does well and who it suits.
Overall verdict
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Recommended for
Overall verdict
Why this product is good
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Share your experience with using Clearscope and ZIP Code API. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.
Clearscope focuses on making content topically relevant through AI-driven keyword and entity analysis. It scores your content against top-ranking pages and highlights terms you’re missing. Its clean interface makes it...
We have no reviews of ZIP Code API yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.
Knowledge of clearscope.io or marketmuse.com a bonus! Source: over 5 years ago
Tracking ZIP Code API since May 2026.
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