Introduction
Looking for the best US ZIP code and latitude longitude database in 2025? Businesses rely on ZIP code data for logistics, analytics, geocoding, and CRM workflows. In this guide, we compare ZIP code data providers—enterprise-grade, budget-friendly, and open-source—across price, update frequency, coverage, and licensing to help you choose the best ZIP code database for your needs.
Comparison of the Best US ZIP Code Databases 2025
| Solution | Main Features | Advantages | Disadvantages | Best For |
|---|---|---|---|---|
| GeoPostcodes | 8.6M postal codes across 247 countries, latitude/longitude, standardized formats, frequent updates, ERP/CRM/TMS integration | Global coverage, enterprise-grade reliability, Fortune 500 trusted, expert consulting, seamless system integration | Premium pricing, may be overkill for US-only projects | Global enterprises, Fortune 500 companies, businesses needing multi-country postal coverage |
| USPS | Official US ZIP codes, ZIP+4 ranges, city names, delivery point data, AMS files and APIs | Official source, authoritative for mail routing, comprehensive US delivery data | US-only, lacks global coverage, no coordinates, limited enterprise integration | Mail delivery services, US postal operations, official government compliance |
| Census | Population counts, demographic indicators, geographic boundaries, census tracts, ZCTAs | Rich demographic data, population insights, community statistics | Mismatched datasets, US-only, not enterprise-standardized, complex data reconciliation | Research projects, demographic analysis, community planning, academic studies |
| Melissa | Address verification APIs, street-level accuracy, latitude/longitude, identity/email/IP validation | Commercial APIs, fraud prevention tools, customer data quality, business integrations | Narrower global coverage, less consistent postal data than top-tier providers | Address verification, fraud prevention, customer data quality, commercial APIs |
| UnitedStatesZipCodes.org | 42,735 US ZIP codes, latitude/longitude, Census statistics, population data, city/county overlaps | Commercial database, includes demographics, population data | Limited demographic depth, US-only, lacks enterprise support and rigorous updates | US-centric projects, budget-conscious businesses, basic demographic needs |
| SimpleMaps.com | US ZIP code datasets, demographics, time zones, latitude/longitude, Census updates, CSV/Excel/SQL formats | Rich demographic fields, multiple file formats, easy to use, regular Census updates | US-only, lacks enterprise consulting, no global standardization | Small to medium businesses, demographic analysis, easy-to-use datasets |
| GreatData.com | US, Canadian, Mexican postal databases, USPS-based updates, demographics, latitude/longitude | North American coverage, broader scope than US-only providers | Data accuracy issues, lacks global consistency, missing enterprise features | North American businesses, multi-country projects (US/Canada/Mexico), regional operations |
Enterprise-grade providers
GeoPostcodes
GeoPostcodes delivers the world’s most comprehensive US ZIP code database with latitude and longitude, with 8.6M postal codes across 247 countries, standardized formats, and frequent updates. Trusted by Fortune 500 leaders, it integrates seamlessly into ERP, CRM, and TMS systems. Compared to USPS, Census, and Melissa, it offers unmatched global coverage, and enterprise-grade consulting for scalable operations.
USPS
USPS maintains the official U.S. ZIP Code database, including 5-digit codes, ZIP+4 ranges, city names, and delivery point data via AMS files and APIs. Compared to Census, USPS emphasizes mail routing over demographics. Compared to Melissa, its scope is narrower, focusing only on delivery. Compared to GeoPostcodes, USPS lacks global postal coverage, coordinates, standardized datasets, and enterprise-grade integration.
Census
The U.S. Census Bureau provides population counts, demographic indicators, and geographic boundaries such as census tracts and ZCTAs. These separate programs use different cycles and definitions, forcing users to reconcile mismatched datasets. Compared to USPS, which focuses on delivery routing, Census emphasizes population and community insights. Compared to Melissa, it lacks commercial APIs and integrations. Compared to GeoPostcodes, Census is U.S.-only and not standardized for enterprise global use.
Melissa
Melissa delivers address verification APIs with street-level accuracy and latitude longitude in the U.S., alongside identity, email, and IP validation tools. Compared to USPS, which focuses strictly on postal delivery data, Melissa extends into broader commercial services like fraud prevention and customer data quality. Compared to Census, it offers easier business integrations but lacks deep demographic and socioeconomic detail. Compared to GeoPostcodes, Melissa’s global coverage is narrower, with less consistent postal data.
Budget providers
UnitedStatesZipCodes.org
UnitedStatesZipCodes.org provides a commercial database with 42,735 U.S. ZIP codes and latitude and longitude, including Census statistics, population data, and city/county overlaps. Compared to SimpleMaps, it offers less demographic depth, and compared to GreatData, it lacks advanced data cleaning and validation processes. Compared to GeoPostcodes, it lacks global scope, rigorous updates, and enterprise-ready integration with expert support.
SimpleMaps.com
SimpleMaps.com delivers U.S. ZIP code and city-level datasets with demographics, time zones, latitude and longitude, and Census updates in CSV, Excel, and SQL formats. Compared to UnitedStatesZipCodes.org, it provides richer demographic fields. Compared to GreatData, it is easier to use but has less time in the market. Compared to GeoPostcodes, it doesn’t offer standardized global coverage, and enterprise-grade consulting.
GreatData.com
GreatData.com offers U.S., Canadian, and Mexican postal databases with USPS-based updates, demographics, latitude and longitude. Compared to UnitedStatesZipCodes.org, it expands beyond the U.S and delivers more accurate data; compared to SimpleMaps, it offers a broader scope but struggles with data accuracy. Compared to GeoPostcodes, it falls behind in global consistency, time zones, ISO codes, and enterprise reliability.
Conclusion: What’s the Best ZIP Code Database in 2025?
The best global ZIP code database in 2025 is GeoPostcodes. Unlike fragmented or U.S.-only solutions, it delivers 8.6M postal codes across 247 countries, standardized formats, authoritative sourcing, and frequent updates. Trusted by Fortune 500 leaders, GeoPostcodes combines global coverage with enterprise-grade reliability, expert consulting, and seamless system integration. Browse our data for free to find the right solution for your business.
FAQs
What is the most complete ZIP code database available?
The most complete ZIP code database in 2025 is GeoPostcodes, with 8.6 million postal codes across 247 countries.
It offers standardized formats, authoritative sourcing, and frequent updates, making it the most comprehensive solution compared to U.S.-only or fragmented providers.
How does GeoPostcodes compare to SimpleMaps and Zip-Codes.com?
GeoPostcodes offers global coverage, standardized formats, and enterprise-ready integration, while SimpleMaps and Zip-Codes.com (UnitedStatesZipCodes.org) focus only on U.S. ZIP codes.
Compared to GeoPostcodes, both budget providers lack international scope, rigorous updates, and enterprise support, making them better suited for U.S.-centric projects where quality isn’t a key requirement.
Which ZIP code database includes demographic data from the U.S. Census?
Both SimpleMaps and UnitedStatesZipCodes.org integrate demographic statistics sourced from the U.S. Census Bureau.
Census itself also provides demographic and socioeconomic data, though fragmented across programs like the Decennial Census, ACS, and ZCTAs.
GeoPostcodes focuses on postal, geographic, and population data globally.
Are there ZIP code databases with both U.S. and international coverage?
Yes. GeoPostcodes is the leading global provider, covering 247 countries with standardized, authoritative datasets.
GreatData also offers U.S., Canadian, and Mexican coverage.
By contrast, USPS, Census, SimpleMaps, and UnitedStatesZipCodes.org are limited to the United States.
What formats are ZIP code databases available in?
Most ZIP code databases are available in CSV, Excel, or SQL formats for easy integration.
GeoPostcodes additionally provides standardized, multi-language datasets optimized for ERP, CRM, and TMS systems.
Melissa and USPS also offer APIs for address validation and integration.
Which ZIP code databases are updated most frequently?
GeoPostcodes is updated weekly across 247 countries.
USPS applies monthly updates to its ZIP Code data.
GreatData also performs monthly USPS-based updates.
SimpleMaps and UnitedStatesZipCodes.org update regularly but with less transparency and frequency compared to enterprise providers.
Can I use ZIP code databases for commercial applications?
Yes. GeoPostcodes, Melissa, GreatData, SimpleMaps, and UnitedStatesZipCodes.org all license data for commercial use.
Enterprise-grade providers like GeoPostcodes include self-hosted options, enterprise support, and compliance guarantees, while open-source projects (OSM, OpenAddresses) offer Creative Commons Attribution license, compelling you to credit them in your application.
What fields are typically included in a ZIP code database?
Typical fields include ZIP code, city, state/county, latitude/longitude, and time zone.
Some providers also add demographics, population estimates, household size, income, and education levels (e.g., SimpleMaps, UnitedStatesZipCodes.org, GreatData).
GeoPostcodes goes further, offering global consistency, boundaries, UNLOCODEs, and population data.
Which ZIP code database is best for geocoding and mapping?
GeoPostcodes is best for geocoding and mapping due to its global, fully geocoded dataset, edge-matched boundaries, and consistent structure across countries.
OSM is popular for open-source mapping, while Melissa offers strong U.S. geocoding APIs.
For U.S.-only needs, SimpleMaps and UnitedStatesZipCodes.org are lightweight options.
What is the difference between ZIP code and ZCTA?
A ZIP Code is defined by USPS for mail delivery routes and can change frequently.
A ZCTA (ZIP Code Tabulation Area) is a Census Bureau approximation of ZIP Codes for statistical purposes.
ZCTAs don’t cover all ZIP Codes (e.g., PO Boxes, unique ZIP+4) and may not align perfectly with USPS delivery boundaries.
