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ZIP Code API VS OpenX

Compare ZIP Code API VS OpenX 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

OpenX logo OpenX

Ad technology platform available as a hosted service or as an open source download.
  • 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

  • OpenX Landing page
    Landing page //
    2023-02-07

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.

OpenX features and specs

  • Comprehensive Ad Exchange
    OpenX offers a powerful and extensive ad exchange platform that enables publishers and advertisers to connect, optimize ad placements, and maximize revenue.
  • Real-time Bidding
    OpenX's real-time bidding (RTB) technology allows advertisers to bid on ad placements in real-time, ensuring the most relevant ads are shown to the right audience at the right time.
  • Cross-Platform Support
    OpenX supports a variety of platforms (desktop, mobile, video) and ad formats, providing flexibility and reach for advertisers and publishers alike.
  • Advanced Targeting
    With advanced audience segmentation and targeting capabilities, OpenX enables advertisers to deliver more personalized and effective ad campaigns.
  • Transparency and Reporting
    OpenX provides detailed reporting and data transparency, allowing users to analyze performance metrics and make informed decisions.
  • High Quality Standards
    OpenX places a strong emphasis on maintaining high-quality ad inventory and follows stringent ad quality guidelines to ensure a safe and effective advertising ecosystem.

Possible disadvantages of OpenX

  • Complex Setup
    The setup and integration process for OpenX can be complex and may require technical expertise, which could be a barrier for smaller publishers or less tech-savvy users.
  • Costs
    While OpenX offers powerful features, the costs associated with using their platform can be relatively high, which may not be suitable for all budgets.
  • Competition
    The ad exchange market is highly competitive, and OpenX faces strong competition from other major players, which might affect pricing and service offerings.
  • Learning Curve
    Due to its advanced features and capabilities, new users may experience a steep learning curve when first starting with OpenX.
  • Support Limitations
    Some users report that customer support can be slow or insufficient, particularly for smaller clients who might not receive the same level of attention as larger accounts.

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 OpenX

Overall verdict

  • OpenX is considered a solid choice for programmatic advertising due to its robust ad exchange platform, advanced targeting options, and comprehensive reporting features.

Why this product is good

  • OpenX provides extensive tools for publishers and advertisers, allowing for efficient monetization and ad placement.
  • It offers advanced targeting capabilities, enabling advertisers to reach specific audiences effectively.
  • The platform is known for its real-time analytics, helping users optimize their ad strategies with actionable insights.
  • OpenX maintains a high standard of ad quality and brand safety, ensuring a trustworthy environment for users.

Recommended for

  • Publishers looking to maximize revenue through programmatic advertising.
  • Advertisers seeking advanced targeting options to reach their desired audience segments.
  • Businesses that prioritize high-quality ad exchanges and value transparency in their advertising operations.
  • Organizations that require detailed analytics and reporting to make informed advertising decisions.

ZIP Code API videos

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OpenX videos

OpenX CEO's Advice for Addressing the 'Asymmetry' in Digital Ads

More videos:

  • Review - OpenX CEO I We Want to Create a Fair and Open Marketplace for Businesses
  • Review - Getting New Domains and App URLs Approved for the OpenX Ad Exchange

Category Popularity

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Ad Networks
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APIs
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Reviews

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OpenX Reviews

A Beginnerโ€™s Guide to Ad Servers (Plus: 8 Ad Servers Reviewed)
OpenX is aimed at the larger publisher that serves a high number of ads per month. They seem to be secretive about pricing, but we did manage to find a few quotes others have received from the OpenX sales team.
Best Ad Serving Platforms For 2018: Third Party Technology Companies (Free Options Included In List)
With the Broad Street platform you can expect ease of use (little additional learning curve for previous GAM or OpenX users), automated reporting to make delivering reports to clients effortless, sponsored content analytics, newsletter advertising management via your dashboard, and even a white labeling option.

What are some alternatives?

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

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

Google Ad Manager - Grow revenue wherever your users are with an integrated ad management platform that surfaces insights for smarter business decisions.

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

AerServ - AerServ offers monetization solution for mobile publishers.

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

Broadstreet Ads - Broadstreet is the premier ad management platform for news publishers, trade magazines, radio...