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

Accela
GovPilot
ClearGov
CivicPlus
GovDelivery
Granicus
Revize CMS
Isolated AWS Region designed to allow US government agencies and customers to move sensitive workloads into the cloud.
Which is more popular?
Based on our record, AWS GovCloud seems to be more popular. It has been mentioned 13 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
ZIP
ZIP Code API
|
|
|
|---|---|---|
| Website | zip-codes.com | aws.amazon.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 AWS GovCloud 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
Walkthroughs and reviews on video.
No ZIP Code API videos yet. You could help us improve this page by suggesting one.
AWS re:Inforce 2019: AWS GovCloud (US): A Path to High Compliance in the Cloud (GRC344)
More videos
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using ZIP Code API and AWS GovCloud. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
Https://aws.amazon.com/govcloud-us/ https://aws.amazon.com/compliance/fedramp/. - Source: Hacker News / 5 months ago
Https://aws.amazon.com/govcloud-us/ None of this is new, AWS' dedicated US government stuff has existed for around a decade. > To what degree is the federal government subsidizing Amazon's retail dominance? Not more than any other big... - Source: Hacker News / over 1 year ago
The US Gov't has their own GOV Cloud Datacenter Regions. It's run by azure and AWS but there are restrictions on who is allowed to use it. It's not really public... - Source: Hacker News / over 1 year ago
When comparing ZIP Code API and AWS GovCloud, you can also consider the following products.

Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
Compare Smarty to ZIP Code API or AWS GovCloud:

Accela provides government software that streamlines land, permitting, asset, licensing, legislative management, and resource management.
Compare Accela to ZIP Code API or AWS GovCloud:

Free Zip Code API - Free Postal Code Validation | Zipcodestack
Compare Zipcodestack to ZIP Code API or AWS GovCloud:

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).
Compare GovPilot to ZIP Code API or AWS GovCloud:

The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
Compare PostalDataPI to ZIP Code API or AWS GovCloud:

Transparency & Budgeting Software for Local Governments | ClearGov
Compare ClearGov to ZIP Code API or AWS GovCloud: