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

DEV.to
Medium
Ghost
Hacker Noon
Substack
Notice
Strapi
A friendly and inclusive Q&A network for coders

Which is more popular?
Based on our record, Hashnode seems to be more popular. It has been mentioned 136 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 | hashnode.com |
| Company | Startup from the United States · 2026 | Startup from India |
| 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 Hashnode 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
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External articles and on-site reviews we used to compare the two products.

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Hashnode is the best place to go for free knowledge sharing. Because we want to foster a good relationship between you and your readers, they don't show any ads or pop-ups on the articles developers share.
Hashnode is an online developer community and blogging platform that allows developers to share their experiences, insights, and tutorials. It provides a supportive space for developers to build their personal brand,...
Hashnode is a one-stop platform to start blogging as a developer. If you are a developer or tech person, you can start writing with hashnode.
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
If you found this guide useful or have questions, don’t hesitate to drop a comment below. What was your first Docker project? Share your experiences, and let’s learn together! Don’t forget to follow me on Dev.to and Hashnode for more... - Source: dev.to / 6 months ago
So, let's say that you are writing a post on your website, but you also want to publish it on other platforms, like medium.com, dev.to or hashnode.com. There is no way you can compete with these domains in terms of domain authority. This... - Source: dev.to / 10 months ago
Hashnode Developer-focused blogging platform with built-in formatting, graphs, and custom domains. - Source: dev.to / over 1 year ago
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Ghost is a fully open source, adaptable platform for building and running a modern online publication. We power blogs, magazines and journalists from Zappos to Sky News.
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