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

AiSensy
Respond.io
Interakt
ManyChat
Intercom
Twilio
Gallabox
No-code chatbot builder for WhatsApp Business

Which is more popular?
Based on our record, WATI 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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ZIP
ZIP Code API
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|---|---|---|
| Website | zip-codes.com | wati.io |
| Pricing | — | |
| Company | Startup from the United States · 2026 | Startup from Hong Kong |
| 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 WATI yet.
What each product offers, as listed by its team.

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
WATI is recommended for small to medium-sized businesses and enterprises that rely heavily on WhatsApp for customer interactions, particularly those in industries like retail, e-commerce, travel, and customer service.
Walkthroughs and reviews on video.
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WATI - Team Inbox powered by WhatsApp API
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using ZIP Code API and WATI. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

We have no reviews of ZIP Code API yet. Be the first one to post
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.
WATI, a product of Clare.ai, is a leading WhatsApp marketing and automation solutions provider. As an official WhatsApp business solution provider, WATI's no-code chatbot, shared team inbox and WhatsApp automation...
This app offers services from a chatbot to take care of your WhatsApp that serves as a customer service. Thus, if you are relying on that thing for your business then you can try Wati, for sure.
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
I am looking to use an API service for Whatsapp wati.io is looking like the most appropriate for us at the moment. Source: over 3 years ago
I'm busy doing WhatsApp integration for my CRM using a platform called WATI. Source: almost 5 years ago
I could find wati.io. Any thing else you guys know ? Source: almost 5 years ago
When comparing ZIP Code API and WATI, 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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Turn Every Conversation into Business Results
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
Compare PostalDataPI to ZIP Code API or WATI:

Easily interact with every user of your app. Setup Your User Interaction Headquarter Today!
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