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

Which is more popular?
Based on our record, Airtable seems to be more popular. It has been mentioned 132 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 | airtable.com |
| Pricing | — | |
| Company | Startup from the United States · 2026 | Startup from the United States · 250 - 499 employees · 2013 |
| 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 Airtable yet.
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Airtable Review | Features, Pricing & Team Use
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Benefits:Airtable's ability to integrate various data sources into one platform allows teams to maintain a centralized source of truth while leveraging powerful visualization tools6.
Airtable blends spreadsheets with database features, offering teams a powerful way to organize structured information. While its flexibility is impressive, it's not purpose-built for communication or team...
Airtable is one of the most popular Asana alternatives. It’s project management tool that helps teams create detailed databases for their work. Users can group and sort data in custom fields with views like Grid to...
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
Aren't Typeform, Google Forms, Microsoft Forms all basically similar in that they are good for surveys etc. But not for much else? Airtable ( https://airtable.com ) has more typical forms and so does Visual DB ( https://visualdb.com ). - Source: Hacker News / over 1 year ago
PurifyPDF is a privacy-first PDF sanitization workflow built using n8n, Postmark, PDF.co, and Airtable. - Source: dev.to / over 1 year ago
It is possible to speed up the development and delivery process for many internal applications by using no-code or low code tools. These vary in offerings from open source to SaaS, including popular ones like AirTable, BudiBase, Retool,... - Source: dev.to / almost 2 years 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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The most intuitive platform to manage projects and teamwork
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