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

GovPilot
AWS GovCloud
ClearGov
CivicPlus
GovDelivery
Granicus
Revize CMS
Accela provides government software that streamlines land, permitting, asset, licensing, legislative management, and resource management.

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 | accela.com |
| Company | Startup from the United States · 2026 | — |
| 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 Accela 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
Accela is highly recommended for local and state government agencies seeking to improve their citizen service operations, particularly those focused on streamlining permitting, licensing, and inspection processes. It is also suitable for governments looking to embark on or enhance their digital transformation journey with cloud-based solutions.
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Accela Reviews: Pima County, AZ
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When comparing ZIP Code API and Accela, 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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GovPilot is a cloud-based government management platform that aims to improve the efficiency and performance of governmental organizations with an affordable and scalable software-as-a-service (SaaS).
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Isolated AWS Region designed to allow US government agencies and customers to move sensitive workloads into the cloud.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Transparency & Budgeting Software for Local Governments | ClearGov
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