
USZipLookup
ZipCheckup
ZIP Code API
Smarty
Geoco.io
AZIPCODE
PostalCodes.app
Use our free ZIP Code Analysis Tool to find city, state, county, population, and timezone details for any U.S. ZIP code. Fast, accurate, and privacy-safe lookup.

Auth0
PropelAuth
Descope
WorkOS
MikMak
AppWrite
Maropost Commerce Cloud
Clerk.io, the artificial intelligence for e-commerce that knows your customers interests.

Which is more popular?
Based on our record, Clerk 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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| Website | uszipcodes.org | clerk.io |
| Pricing | ||
| Platforms | β | |
| Company | Startup from India Β· 2025 | β |
| Listed in |
In their own words, as submitted to SaaSHub.


ZIP Code Analysis Tool is a web-based application that allows users to search any US ZIP code and instantly view detailed location-based data. The tool provides accurate information including city, state, county, latitude, longitude, and population statistics. It is designed for researchers,...
No description of Clerk yet.
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
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
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The Night Clerk - Movie Review - (No Spoilers)
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How often each product is chosen within a category, 0β100% relative to the other.


As answered by people managing usZIPCodes.org and Clerk.
usZIPCodes.org's answer
Their ability to translate simple postal codes into sophisticated geographic insights for a wide range of business and research applications beyond their original mail delivery purpose.
usZIPCodes.org's answer
The "story" behind the concept of a "ZIP Code analysis tool" is not about a single specific software product, but rather the evolution of the ZIP Code itself from a simple postal sorting mechanism into a powerful, multifaceted geographic data analysis unit used across many industries.
Share your experience with using usZIPCodes.org and Clerk. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking usZIPCodes.org since Dec 2025.
Try Clerk itβs a relatively cheaper alternative, very good for recommendations. Source: over 5 years ago
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Check water quality, product recalls, energy rebates, and safety alerts for any U.S. ZIP code. Free reports powered by EPA and government data.
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PropelAuth hosts and manages your authentication.
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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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