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
AWS GovCloud
ClearGov
CivicPlus
GovDelivery
Granicus
FiscalNote is a GRM platform enabling government affairs professionals to maximize their influence on legislation.
Which is more popular?
Based on our record, FiscalNote seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
ZIP
ZIP Code API
|
|
|
|---|---|---|
| Website | zip-codes.com | fiscalnote.com |
| Company | Startup from the United States · 2026 | Startup from the United States · 250 - 499 employees · 2013 |
| 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 FiscalNote 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.
FiscalNote: Critical Policy & Global Intelligence for a Rapidly Evolving World
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 FiscalNote. 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.
The first plugins have been created by Expedia, FiscalNote, Instacart, KAYAK, Klarna, Milo, OpenTable, Shopify, Slack, Speak, Wolfram, and Zapier. Source: over 3 years ago
FiscalNote Holdings Inc., a company that specializes in software for policy makers and regulators, said Thursday it exceeded fourth-quarter and full-year estimates for 2021, led by both organic growth and recent strategic acquisitions. Source: over 4 years ago
When comparing ZIP Code API and FiscalNote, 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 FiscalNote:

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

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

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 FiscalNote:

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

Isolated AWS Region designed to allow US government agencies and customers to move sensitive workloads into the cloud.
Compare AWS GovCloud to ZIP Code API or FiscalNote: