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

Remindly
RecordAi
ListBox App
CurrentOrigin AI
Sewpoint.app
Perplexity.ai
RealEstate.com.au
Sell or rent your property without an agent using Gemma. Save on commission and take control of your sale or rental with expert support, marketing, and listing services.

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


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An editorial look at what each product does well and who it suits.


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Why this product is good
Recommended for
Overall verdict
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Zipcodestack and Gemma. 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 / about 1 year 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: over 3 years ago
Tracking Gemma since Jul 2025.
When comparing Zipcodestack and Gemma, 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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Simple and user friendly, open-source reminder app for Android.
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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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A friend in WhatsApp to set reminders and events
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Postal code lookup API and downloadable country datasets for address validation, checkout, logistics and geocoding workflows.
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'If you want something done well, do it yourself"
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