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ZIP Code API VS Interfacer

Compare ZIP Code API VS Interfacer and see what are their differences

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  2. ยป Videos
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  4. 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

Interfacer logo Interfacer

Collection of more than 200+ free design resources
  • 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

  • Interfacer Landing page
    Landing page //
    2022-10-04

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.

Interfacer features and specs

  • Ease of Use
    Interfacer offers a user-friendly interface that simplifies the process of integrating and managing APIs, making it accessible even for users with limited technical knowledge.
  • Multi-Platform Support
    This tool supports integration with a variety of platforms and services, giving users the flexibility to connect different systems seamlessly.
  • Customization
    Interfacer allows users to customize API integrations, providing tailored solutions to meet specific requirements and workflows.
  • Scalability
    The platform is designed to handle growing data and increasing numbers of API calls, making it suitable for both small and large-scale operations.

Possible disadvantages of Interfacer

  • Pricing
    The cost of using Interfacer may be high for small businesses or individual developers, particularly for premium features and high-volume usage.
  • Learning Curve
    While the interface is user-friendly, mastering all the features and capabilities of Interfacer can take some time, especially for users new to API management tools.
  • Support
    Customer support may not be available 24/7, which could be a drawback for users who need immediate assistance outside of regular business hours.
  • Limited Offline Functionality
    Interfacer's reliance on internet connectivity means that it may not be fully functional in offline scenarios, limiting its usability in remote or unreliable network conditions.

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

Analysis of Interfacer

Overall verdict

  • Yes, Interfacer is regarded as a good platform, especially for those who are seeking a robust selection of design and development resources that can streamline project workflows and enhance productivity.

Why this product is good

  • Interfacer, accessible at interfacer.xyz, is a platform known for its comprehensive suite of tools and resources aimed at facilitating seamless web development and design processes. It offers a variety of templates, UI kits, and digital assets that are beneficial for designers and developers. The user-friendly interface, coupled with regular updates and a diverse range of high-quality assets, makes it a valuable resource.

Recommended for

    Interfacer is particularly recommended for web developers, UI/UX designers, and digital product teams who require reliable and efficient tools for creating aesthetically pleasing and functional user interfaces.

ZIP Code API videos

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Interfacer videos

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Category Popularity

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

ZIP Code API

Interfacer

Zip Lookup
100 100%
Zip Lookup
0% 0
Design Tools
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Design Tools
100% 100
APIs
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APIs
0% 0
Illustrations
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Illustrations
100% 100

User comments

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Social recommendations and mentions

Based on our record, Interfacer 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.

Interfacer mentions (1)

  • An essential list of resources for developers and designers
    You are right, Ok I will replace it by another link with similar content (it's my second favorite) Interfacer.xyz. Source: over 5 years ago

What are some alternatives?

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

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

Neede - An online design resource library

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

Blush - Illustrations for everyone

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

Bestfolios - Portfolio website and resume collection from best designers

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