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ZIP Code API VS Primo Postcodes

Compare ZIP Code API VS Primo Postcodes and see what are their differences

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ZIP Code API logo ZIP Code API

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

Primo Postcodes logo Primo Postcodes

UK Postcode Address Lookup API - Maximise E-Commerce Checkouts, Increase Conversions, Reduce Data Entry & Improve Accuracy.
  • ZIP Code API Landing page
    Landing page //
    2026-05-21

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 true spatial polygon intersection. Returns ZIPs/FSAs within range, with per-result pct_inside overlap percentage for spatial queries
  • Unified lookup endpoint — accepts US ZIP, ZIP+4, Canadian FSA, full Canadian postal codes, or latitude/longitude inputs
  • Autocomplete/typeahead — cities, counties, metros, states, FSAs, ZIPs
  • Point-to-point distance — between any two postal points
  • Census ACS demographics — 2011–2024, 542 fields per ZIP across income, education, housing, social, and economic profiles
  • Boundary lookups — Census tracts, congressional districts, state legislative areas, school districts — with computed intersection percentages per ZIP

What makes it different

  • Licensed commercial data — not commodity or scraped sources
  • Canadian postal coverage — most peers in this space are US-only
  • True spatial radius — not just centroid haversine
  • 14 years of historical ACS depth via API — unusual outside of raw Census downloads
  • One endpoint for all of North America — no country-detection or input-routing logic to maintain on the client side

Pricing

  • Free — 2,500 lookups/day, no credit card required, no expiry
  • Developer — $49/mo, 100K credits, 300/min
  • Professional — $149/mo, 350K credits, 300/min
  • Business — $499/mo, 1.5M credits, 600/min
  • Credit packs — one-time, from 25K ($19) up to 2M ($799)

Resources

  • Primo Postcodes Landing page
    Landing page //
    2023-02-13

ZIP Code API

Website
zip-codes.com
Pricing URL
-
$ Details
-
Platforms
-
Release Date
2026 April
Startup details
Country
United States
State
NY
City
Hopewell Junction
Edit details

Primo Postcodes

Website
primopostcodes.com
Pricing URL
Official Primo Postcodes Pricing
$ Details
freemium
Platforms
REST API WooCommerce Opencart Magento Shopify Salesforce
Release Date
-
Edit details

ZIP Code API features and specs

  • Comprehensive ZIP Code Data
    The ZIP Code API from zip-codes.com provides extensive data including ZIP code details, city information, state data, and geographic coordinates, making it a thorough resource for location-based lookups.
  • Multiple Lookup Options
    The API supports various types of lookups including ZIP code to city/state, city/state to ZIP code, distance calculations between ZIP codes, and radius searches, offering flexible querying capabilities.
  • Easy Integration
    The API uses standard REST-based HTTP requests and returns data in commonly used formats like JSON and XML, making it straightforward to integrate into most applications and programming languages.
  • Distance and Radius Calculations
    The API includes built-in functionality for calculating distances between ZIP codes and finding ZIP codes within a specified radius, which is valuable for store locators, shipping estimates, and proximity-based features.
  • Well-Documented Endpoints
    The API provides clear documentation for its various endpoints and parameters, helping developers understand available features and implement them correctly without extensive trial and error.

Primo Postcodes features and specs

  • Comprehensive Data Coverage
    Primo Postcodes offers comprehensive postal data coverage, ensuring accurate and reliable postcode information for various applications.
  • Easy Integration
    The service provides user-friendly APIs that are easy to integrate into different systems, making it accessible for developers.
  • Cost-Effective
    Primo Postcodes is often more affordable compared to other postcode data providers, providing good value for businesses.
  • Frequent Updates
    The platform offers frequent updates to ensure that users have access to the latest postcode data.
  • High Performance
    The service provides fast response times and high availability, which is crucial for applications requiring real-time data.

Possible disadvantages of Primo Postcodes

  • Limited Global Coverage
    Primo Postcodes primarily focuses on UK postcodes, which may not be suitable for businesses needing global postcode data.
  • Dependence on External API
    Businesses relying heavily on the API may face issues if there are any outages or service disruptions.
  • Customization Limitations
    Some users may find limitations in customization options compared to building an in-house solution.
  • Data Licensing Restrictions
    There could be restrictions on how the data can be used, shared, or stored, which could impact certain business models.

Analysis of ZIP Code API

Overall verdict

  • ZIP Code API from zip-codes.com is a solid, reliable choice for developers and businesses needing accurate US and Canadian postal code data, offering a straightforward RESTful interface with regularly updated databases.

Why this product is good

  • Provides accurate and frequently updated ZIP code, city, state, and geographic data
  • Offers a simple RESTful API that is easy to integrate into web and mobile applications
  • Supports features like ZIP code lookup, radius search, and distance calculations
  • Includes both US ZIP codes and Canadian postal codes for broader coverage
  • Backed by an established data provider with a long track record in postal data

Recommended for

  • Developers building address validation or autofill features
  • E-commerce platforms needing shipping and location-based calculations
  • Businesses performing geographic or radius-based store locators
  • Applications requiring reliable US and Canadian postal data
  • Marketing and logistics teams that need regional or demographic targeting

Category Popularity

0-100% (relative to ZIP Code API and Primo Postcodes)

ZIP Code API

Primo Postcodes

Zip Lookup
100 100%
Zip Lookup
0% 0
Address Verification API
0 0%
Address Verification API
100% 100
APIs
100 100%
APIs
0% 0
Address Finder
0 0%
Address Finder
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare ZIP Code API and Primo Postcodes

ZIP Code API Reviews

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Primo Postcodes Reviews

  1. Guest
    Migrated from Fetchify

    Primo Postcodes has been operating very smoothly and we are definitely reaping the rewards of the caching feature with about 20-25% of queries being retrieved from cache!

    Pros:    High performance|Reliable service|Cost-efficient|Quick migration
    Cons:    None

What are some alternatives?

When comparing ZIP Code API and Primo Postcodes, you can also consider the following products

Smarty - Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.

Ideal postcodes - We help businesses improve UX and data quality with a cutting edge address validation service.

Zipcodestack - Free Zip Code API - Free Postal Code Validation | Zipcodestack

Fetchify - Fetchify delivers fast, accurate address, email, phone and bank validation tools that help businesses capture clean, verified customer data, reduce failed deliveries and improve checkout experiences worldwide.

PostalDataPI - The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.

Loqate - The Standard in Global Address Verification

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