Self-hosted USPS API alternative

Geocoded US and international address validation with dedicated expert consulting

Reasons to choose GeoPostcodes over USPS API

Global coverage

Flexible deployment model

Dedicated expert consulting


Integration options	Self-hosted datasets directly integrated into your systems	API integration for real-time processing
Control over data	Access and modify the full underlying reference data	Control over the API response but no access to the reference data
Performance	Full control, no dependency	Third-party API dependency (default quota of 60 lookups per hour)
Customer support	Enterprise consultancy included, with in-house GIS specialists	Phone and email support
Use cases	Broad use case coverage, including bulk address validation, across all industries	Shipping address validation and mail services
Coverage	247 countries with coordinates - latitude and longitude	United States only, without coordinates

Why choose GeoPostcodes as the USPS API alternative

Flexible implementation and integration

Validate addresses using self-hosted address data directly within your systems. Adapt the implementation to your existing architecture.

Worldwide coverage

Access accurate, up-to-date ZIP codes, cities, administrative divisions, and latitude and longitude coordinates across the US and 246 other countries in one standardized structure.

Full control over address data

Access the underlying address reference datasets and control how they are used in your systems. Apply your own logic and business rules.

Enterprise Consulting

Work with in-house GIS specialists who guide your implementation and deliver the dataset in the format that fits your systems.

Trusted by industry leaders

Join more than 100 enterprise clients who trust GeoPostcodes for their location data

“GeoPostcodes’ global Postcodes allow us to determine distances accurately. Thanks to their up-to-date database, we no longer have problems with missing locations, making our system much more efficient and reliable.”

Anjo Grebe

Consultant

“GeoPostcodes databases provide IATA codes, enhanced UNLOCODEs with port terminal data, addresses, and more – all on a global scale! This level of accuracy is essential for our mileage and CO2 emissions calculation.”

Dr. Peter Wild

Managing Partner

“GeoPostcodes’ Population data shows population forecasts over the next years. We can use it as a proxy to justify longer-term changes and downgrade postal code areas in terms of economic viability.”

Kousha Mazloumi

Director of Data Science

“The concept of the city receives different names or belongs to different hierarchical levels depending on the country. Using GeoPostcodes’ data gave us access to city definitions aligned with our customers’ expectations, saving us computation time.”

Kousha Mazloumi

Director of Data Science

“The world is constantly changing. New localities and neighborhoods open up or become dispersed. It’s good to know that GeoPostcodes is keeping on top of those changes and providing us with updated information to work with.”

William Chao

Product Owner of Geographic Information Services

“The key aspect of working with GeoPostcodes has been their ability to provide customized data solutions. Their collaborative approach has made them an excellent partner in addressing our location data challenges.”

Kate Kilby

Senior Product Manager

“GeoPostcodes’ multi-level boundaries were perfectly aligned, enabling seamless integration with multiple secure cloud platforms. Our software can now provide more accurate visualizations for risk analysis and natural hazard monitoring.”

Dave Hamm

Project Manager

“Countries like Brazil or China are particularly strict with their customs validation. GeoPostcodes’ Postcodes and Enhanced UNLOCODES database are aligned with national regulations, ensuring seamless transportation and compliance.”

Kavian Ranjbar

Data Governance Specialist

“If you’ve got a business where locations are a big part of it and you’re looking to avoid the large costs that can be involved in using APIs, GeoPostcodes’ on-premise database is definitely worth considering.”

Nick Beaugié

Senior Software Engineer

Check our customer stories

Why choose GeoPostcodes

Global coverage

Complete coverage across 247 countries, including hard-to-source geographies like China, Japan, Brazil, and Russia.

Highest quality

Built on extensive, authoritative sourcing with robust data engineering and quality control. Standardized and up-to-date.

Expert Consulting

With 15 years of experience, we guide your implementation and deliver data in the format that fits your system.

Discover more advantages

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Frequently Asked Questions

What makes GeoPostcodes a compelling USPS API alternative for businesses?

GeoPostcodes provides a self-hosted postal reference dataset covering 247 countries, including ZIP codes, cities, administrative divisions, and latitude and longitude coordinates. Unlike USPS, which focuses on U.S. shipping address validation through an API, GeoPostcodes delivers a full underlying dataset that you can integrate directly into your systems for broader operational use.

Can GeoPostcodes integrate with existing business systems efficiently?

Yes. The datasets are delivered in standardized, structured formats designed for integration into ERP, Customer Relationship Management (CRM), Master Data Management (MDM), Business Intelligence (BI), and Geographic Information System (GIS) environments. You integrate the data directly into your infrastructure without relying on an external API connection.

How does GeoPostcodes support global users and their data needs?

GeoPostcodes covers 247 countries in a unified global structure. The dataset includes standardized administrative levels, multi-language support, and coordinates, allowing global teams to work with consistent location data across regions. This supports international reporting, address validation, and master data alignment from a single source.

Why choose GeoPostcodes over an API solution like USPS?

GeoPostcodes provides a self-hosted dataset that you control within your infrastructure. This removes dependency on a third-party API endpoint and gives you access to the full underlying reference data. USPS offers API-based validation primarily for U.S. shipping addresses, while GeoPostcodes supports broader global use cases, including bulk validation, analytics, and data governance.