
Apollo.io
Success.ai
Snov.io
B2B Rocket AI
folk.app
Attio
Reverse Contact
Make selling easy!
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

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Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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|---|---|---|
| Website | zeliq.com | zip-codes.com |
| Pricing | — | |
| Company | 2023 | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of ZELIQ yet.
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...
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Apollo vs ZELIQ: Which is Better for Sales Prospecting?
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When comparing ZELIQ and ZIP Code API, you can also consider the following products.

Apollo’s predictive prospecting, sales engagement, and actionable analytics help the teams to reach its full revenue potential.
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Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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Achieve unmatched growth with Success.ai. Dive into 700M+ B2B leads and benefit from unlimited emails, automated warmups, and AI-powered writing.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Snov.io is a multichannel lead generation and outreach automation platform that helps B2B teams find qualified leads, automate email and LinkedIn campaigns, and manage deals in one built-in CRM.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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