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

Slack
Notion
Floom
Twist
Sparklip
Circle.so
Wylo App
Making work more inclusive.
Which is more popular?
Based on our record, Threads seems to be more popular. It has been mentioned 34 times since March 2021.
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 | threads.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 Threads 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
No analysis of Threads yet.
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Loudmouth Reviews Threads - the scariest movie ever made
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Share your experience with using ZIP Code API and Threads. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
Http://sidecar.clutch.engineering/ — Sidecar, a personal automotive assistant. Sharing dev updates at http://threads.net/@featherless. - Source: Hacker News / over 1 year ago
Threads is one the new immerging social media site that is owned and operated by Meta and introduced by a famous platform known as Instagram. This is basically a text-based conversation application in which people can share their... Source: over 3 years ago
That is a MAJOR drawback. Maybe it will come with time. But the domain is threads.net. threads.com belongs to a completely different app. That is going to be a head-scratcher for sure. Source: over 3 years ago
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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