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ZIP Code API VS FlowMapp

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

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

FlowMapp logo FlowMapp

FlowMapp is a UX planning tool for creating visual sitemaps and user flow.
  • 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

  • FlowMapp Landing page
    Landing page //
    2024-08-04

FlowMapp is a UX planning tool for creating visual sitemaps and user flow. FlowMapp is very effective for planning the development of a site, mobile or web app, and it allows all the participants in the process to collaborate with each other, which makes the workflow easier and more convenient.

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

FlowMapp

Website
flowmapp.com
Pricing URL
Official FlowMapp Pricing
$ Details
freemium $15.0 / Monthly (5 projects, unlimited sitemaps, user flows, personas, CJM's)
Platforms
Web
Release Date
2017 October
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.

FlowMapp features and specs

  • User-Friendly Interface
    FlowMapp features an intuitive and easy-to-use interface, making it accessible for team members of all skill levels.
  • Collaboration Tools
    The platform provides robust collaboration features, allowing multiple team members to work on sitemaps and user flows in real-time.
  • Visual Sitemaps
    FlowMapp allows users to create detailed and visually appealing sitemaps, enhancing the planning phase of web development projects.
  • User Flow Diagrams
    The software offers tools specifically designed to map out user journeys, helping to optimize user experience.
  • Integration Capabilities
    FlowMapp can integrate with other tools and platforms, facilitating a seamless workflow across different stages of project management.
  • Responsive Customer Support
    Users often cite responsive and helpful customer support, making problem resolution faster and easier.

Possible disadvantages of FlowMapp

  • Cost
    FlowMapp can be relatively expensive for small teams or individual freelancers, as it operates on a subscription-based pricing model.
  • Limited Export Options
    Users have reported that the options for exporting projects are limited, which can be a barrier for presentations or offline work.
  • Learning Curve
    While the interface is user-friendly, some advanced features can have a steep learning curve, especially for new users.
  • Performance Issues
    Some users experience performance issues on larger projects, including slower load times and occasional lags.
  • Feature Limitations
    Certain advanced features are only available in higher-tier plans, making them inaccessible to users on a budget.
  • No Mobile App
    FlowMapp currently does not offer a mobile application, which limits its usability for on-the-go project management.

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 FlowMapp

Overall verdict

  • FlowMapp is considered a good option for professionals in the web design and development space due to its comprehensive features and ease of use. It offers robust tools that help improve the efficiency and effectiveness of the design process.

Why this product is good

  • FlowMapp is a highly regarded tool for creating UX personas, user flows, sitemaps, and wireframes. It provides a user-friendly interface, collaboration features, and a suite of tools that facilitate the design process, making it an asset for UX/UI designers and teams. The platform helps streamline the organization of ideas and the presentation of complex information in a visually intuitive way.

Recommended for

    FlowMapp is recommended for UX/UI designers, product managers, web developers, and digital marketing teams who want to improve their planning and design processes. It is a valuable tool for anyone who needs to create clear and functional blueprints for websites and applications.

ZIP Code API videos

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FlowMapp videos

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FlowMapp Software Review | First Impressions

More videos:

  • Review - FlowMapp in 2 minutes
  • Review - User Flows with FlowMapp

Category Popularity

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

ZIP Code API

FlowMapp

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

User comments

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What are some alternatives?

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

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

VisualSitemaps - Visual Sitemaps | Crawl & Website Architecture + Flows

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

Octopus.do - Build your website structure in real-time and rapidly share it to collaborate with your team or clients. Start prototyping websites or apps instantly.

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

Rarchy - Plan your next website with Rarchy using our easy visual sitemaps & website planning tool. Collaborate in real-time with your whole team. Try us for free today!

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