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

Cursor
GitHub Copilot
Google Antigravity
warp by spolu
opencode
Windsurf Editor
Codex 3.0 by OpenAI
Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching, just breakthrough results.

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 | anthropic.com |
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What each product offers, as listed by its team.


Possible disadvantages
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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How often each product is chosen within a category, 0–100% relative to the other.


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External articles and on-site reviews we used to compare the two products.


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I just purchased 20 bucks package of claude and now its working as a full time employee for me.
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 / about 1 year ago
Zipcodestack - Free Zip Code API and Postal Code Validation. Ten thousand free requests/month. - Source: dev.to / almost 3 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: over 3 years ago
Tracking Claude Code since May 2025.
When comparing Zipcodestack and Claude Code, you can also consider the following products.
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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The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
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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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Your AI pair programmer. With GitHub Copilot, get suggestions for whole lines or entire functions right inside your editor.
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Postal code lookup API and downloadable country datasets for address validation, checkout, logistics and geocoding workflows.
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Google Antigravity - Build the new way
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