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ZIP Code API VS SMARTBEAR ReadyAPI

Compare ZIP Code API VS SMARTBEAR ReadyAPI and see what are their differences

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Contents:
  1. ยป Base Details
  2. ยป Reviews
  3. ยป Alternatives

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

SMARTBEAR ReadyAPI logo SMARTBEAR ReadyAPI

SMARTBEAR ReadyAPI is one of the legit and professional automated testing API platforms that allows teams to create and run automated security tests for APIs and SOAP APIs.
  • 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 โ€” no separate APIs by country or data type.

What it does

  • Address validation and standardization โ€” production-grade parser with ZIP+4 append, refreshed monthly
  • Radius search โ€” 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 โ€” accepts US ZIP, ZIP+4, Canadian FSA, full Canadian postal codes, or latitude/longitude inputs
  • Autocomplete/typeahead โ€” cities, counties, metros, states, FSAs, ZIPs
  • Point-to-point distance โ€” between any two postal points
  • Census ACS demographics โ€” 2011โ€“2024, 542 fields per ZIP across income, education, housing, social, and economic profiles
  • Boundary lookups โ€” Census tracts, congressional districts, state legislative areas, school districts โ€” with computed intersection percentages per ZIP

What makes it different

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

Pricing

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

Resources

  • SMARTBEAR ReadyAPI Landing page
    Landing page //
    2023-09-11

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.

SMARTBEAR ReadyAPI features and specs

  • Comprehensive Testing Tools
    ReadyAPI offers a full suite of tools for API testing, including functional, security, and load testing. This allows teams to perform various tests within a single platform, streamlining the testing process.
  • User-Friendly Interface
    The platform provides an intuitive and user-friendly interface, making it accessible even for users who may not have extensive technical expertise.
  • Extensive Protocol Support
    ReadyAPI supports a wide range of protocols and standards (like REST, SOAP, and GraphQL), allowing for versatile testing of different API types.
  • Integration Capabilities
    The software integrates well with other tools and platforms such as Jenkins, Git, and Jira, which facilitates continuous integration and deployment (CI/CD) processes.
  • Data-Driven Testing
    ReadyAPI enables data-driven testing, allowing testers to use external data sources to drive test scenarios, improving the flexibility and depth of testing.

Possible disadvantages of SMARTBEAR ReadyAPI

  • Cost
    Compared to some other API testing tools, ReadyAPI can be relatively expensive, which might be a concern for small businesses or projects with limited budgets.
  • Learning Curve
    Despite its user-friendly interface, the breadth of features and capabilities can present a steep learning curve for new users or those transitioning from simpler tools.
  • Resource Intensive
    The tool can be resource-intensive, requiring significant system resources, which might slow down other operations on less powerful machines.
  • Occasional Stability Issues
    Some users report occasional stability issues, such as crashes or slow performance, especially when handling very large test suites.
  • Limited Open-Source Community Support
    While there is support available from SmartBear, the tool is not open-source, which limits community-contributed plugins or extensions compared to completely open-source solutions.

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 SMARTBEAR ReadyAPI)

ZIP Code API

SMARTBEAR ReadyAPI

Zip Lookup
100 100%
Zip Lookup
0% 0
Development
0 0%
Development
100% 100
APIs
100 100%
APIs
0% 0
Website Testing
0 0%
Website Testing
100% 100

User comments

Share your experience with using ZIP Code API and SMARTBEAR ReadyAPI. For example, how are they different and which one is better?
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Social recommendations and mentions

Based on our record, SMARTBEAR ReadyAPI seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

ZIP Code API mentions (0)

We have not tracked any mentions of ZIP Code API yet. Tracking of ZIP Code API recommendations started around May 2026.

SMARTBEAR ReadyAPI mentions (1)

  • How To Make Scheduled API Tests For A Deployed Project?
    On the continual testing side, We use ReadyAPI which allows API tests with multiple assercertions, good/bad paths etc. Really easy to manage (ours is curated by test team with very little coding experience). It can be set up to run on schedule or connected to CI/CD pipeline to run them all before merging new code. Source: over 3 years ago

What are some alternatives?

When comparing ZIP Code API and SMARTBEAR ReadyAPI, you can also consider the following products

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

Keysight Network Test - Keysight Network Test is a modular, scalable, software-only solution that delivers an effective test, measurement, and performance monitoring platform for managing and troubleshooting wired and wireless networks.

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

Oracle Application Testing Suite - Oracle Application Testing Suite is a comprehensive, integrated testing solution for web applications and services.

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

Tricentis NeoLoad - Tricentis NeoLoad is an Enterprise Performance Load Testing platform that provides hardware-based performance simulations and can simulate web services, databases, file servers, and virtualized environments.

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