
ZIP Code API
PostalCodes.info
ZipCheckup
Smarty
Geocode.xyz
Geoco.io
getAddress.io
Free Zip Code API - Free Postal Code Validation | Zipcodestack

Start your next startup, SaaS project, or side hustle with StartBase – the perfect foundation offering clean, modern code that follows best practices.

Which is more popular?
Based on our record, Zipcodestack seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | zipcodestack.com | startbase.dev |
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| Company | — | Startup from the United Kingdom · 10 - 19 employees · 2024 |
| Listed in |
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No description of Zipcodestack yet.
# StartBase: Your All-in-One Foundation for Modern Projects Start your next startup, SaaS project, or side hustle with StartBase—the perfect foundation offering clean, modern code that follows industry best practices and integrates trendy open-source libraries. With seamless integration of...
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Share your experience with using Zipcodestack and startbase.dev. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Using the zipcodestack API in your Node.js application is straightforward. You’ll first need to sign up for a free API key (it only takes a minute). Once you have your API key, you can call the REST endpoints using any HTTP client. Below... - Source: dev.to / 11 months ago
Zipcodestack - Free Zip Code API and Postal Code Validation. Ten thousand free requests/month. - Source: dev.to / over 2 years ago
I have seen this request pop up quite a few times. I did a quick search for free APIs of zipcode lookups. This one, named "zipcodestack" (I'm not in any way tied to, endorsing, or promoting them) seemed like a pretty good resource with... Source: about 3 years ago
Tracking startbase.dev since Feb 2025.
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ridiculously cheap bulk geocoding turn US street addresses into map coordinates and map coordinates into street addresses using our straightforward REST API
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