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

Samsara
Onfleet
KeepTruckin
Azuga Fleet Management
GPS Insight
Dr Dispatch
GPSWOX
Easily manage vehicles and equipment with Fleetio, a modern fleet management software.

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 | fleetio.com |
| Pricing | — | |
| Platforms | — | |
| 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...
Fleetio's suite of cloud- and mobile-based fleet management solutions enables fleets of all sizes to automate fleet operations and manage asset lifecycles. Users can instantly access and update data regarding planned and unplanned maintenance, fuel, drivers, inspections, parts and much more....
What each product offers, as listed by its team.

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
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How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing ZIP Code API and Fleetio.
Fleetio's answer:
Fleetio's answer:
Fleetio launched in January 2012, and today thousands of people use Fleetio to manage hundreds of thousands of vehicles, equipment, parts, drivers and more. Over the years we've worked with fleets of 10 vehicles to many thousands, and our mission is still the same. We help organizations track, analyze and improve their fleet operations.
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When comparing ZIP Code API and Fleetio, 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 Fleetio:

Samsara is a service provider that helps businesses in increasing their safety, efficiency, and sustainability in their operation, which power the economy.
Compare Samsara to ZIP Code API or Fleetio:

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

Onfleet's delivery management software simplifies your local deliveries from start to finish, allowing you to focus more on what really matters.
Compare Onfleet to ZIP Code API or Fleetio:

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

KeepTruckin is a trusted fleet management software program designed for the trucking industry.
Compare KeepTruckin to ZIP Code API or Fleetio: