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ZIP Code API VS Clearbit Forms

Compare ZIP Code API VS Clearbit Forms 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

Clearbit Forms logo Clearbit Forms

Data powered web forms designed for conversion
  • 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

  • Clearbit Forms Landing page
    Landing page //
    2023-09-23

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.

Clearbit Forms features and specs

  • Reduced Form Fields
    Clearbit Forms allows you to minimize the number of fields in your forms by auto-filling data like company name, role, and other essential information, leading to higher conversion rates.
  • Enhanced User Experience
    Users can enjoy a smoother experience with less data entry required, as Clearbit Forms fills in the information automatically, lowering the barrier to form completion.
  • Data Enrichment
    By using Clearbit, you gain access to a wide array of enriched data points that can help to better qualify leads and understand your customer base.
  • Time Efficiency
    Automating data entry saves time for both users and businesses, enabling quicker interactions and faster processing of leads.

Possible disadvantages of Clearbit Forms

  • Privacy Concerns
    Auto-filling and accessing additional user data can raise privacy issues among users who may be wary of how their information is being used and stored.
  • Cost
    Clearbit's solutions can be expensive, which might be a barrier for smaller businesses or startups with limited budgets.
  • Data Accuracy
    While data enrichment can be beneficial, there is a possibility of inaccuracies in the pre-filled information, which can lead to incorrect assumptions or actions.
  • Integration Complexity
    Integrating Clearbit Forms with existing systems may require technical expertise, which could pose challenges for some organizations.

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 Clearbit Forms)

ZIP Code API

Clearbit Forms

Zip Lookup
100 100%
Zip Lookup
0% 0
Form Builder
0 0%
Form Builder
100% 100
APIs
100 100%
APIs
0% 0
Productivity
0 0%
Productivity
100% 100

User comments

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What are some alternatives?

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

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

Typeform - Create beautiful, next-generation online forms with Typeform, the form & survey builder that makes asking questions easy & human on any device. Try it FREE!

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

HeyForm - Paperless data collection with better data insights

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

Botsify Conversational Forms - Lead generation forms for chatbots

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