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?
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 | aisensy.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from the United States · 2026 | 2020 |
| 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...
AiSensy is a complete WhatsApp Engagement Platform powered by official WhatsApp Business APIs allowing businesses to send WhatsApp Broadcasts, add WhatsApp Chatbot, integrate with CRMs & Ecommerce Portals, live chat & much more.
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Since there are so many Business Solution Providers like TryowBOT, WATI, and Aisensy, Interakt, businesses need to really examine which among them would work best.
AiSensy is a complete no-code required WhatsApp Business API platform. With its fully integrated WhatsApp marketing suite, you can enjoy features such as WhatsApp retargeting, multi-human live chat support window, and...
Easy to use, simple UI, powerful Saas
When comparing ZIP Code API and AiSensy, you can also consider the following products.

Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Easily interact with every user of your app. Setup Your User Interaction Headquarter Today!
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Turn Every Conversation into Business Results
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