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ZIP Code API VS FirstPromoter

Compare ZIP Code API VS FirstPromoter 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

FirstPromoter logo FirstPromoter

Affiliate, influencer and referral program infrastructure built for subscription revenue.
  • 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 — no separate APIs by country or data type.

What it does

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

What makes it different

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

Pricing

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

Resources

  • FirstPromoter
    Image date //
    2026-07-30
  • FirstPromoter
    Image date //
    2026-07-30
  • FirstPromoter
    Image date //
    2026-07-30
  • FirstPromoter
    Image date //
    2026-07-30
  • FirstPromoter
    Image date //
    2026-07-30
  • FirstPromoter
    Image date //
    2026-07-30
  • FirstPromoter
    Image date //
    2026-07-30
  • FirstPromoter
    Image date //
    2026-07-30
  • FirstPromoter
    Image date //
    2026-07-30
  • FirstPromoter
    Image date //
    2026-07-30
  • FirstPromoter
    Image date //
    2026-07-30

FirstPromoter is partner program infrastructure for subscription businesses. Run affiliate, influencer, and referral programs in one place, with commission logic tied directly to billing events.

Connect your billing provider and go live in hours. Integrations cover Stripe, Chargebee, Paddle, Recurly, and Braintree, so commissions follow real subscription behavior: renewals, upgrades, downgrades, refunds, and cancellations. When a customer changes plans, the commission adjusts to match the new plan value.

Affiliates self-serve through a white-labeled portal. Set up multi-tier commissions up to three levels, dual-sided referral rewards, and coupon or link attribution for creators. Advanced fraud protection flags suspicious activity before it reaches a payout. Reporting stays traceable back to each billing event, so finance can reconcile payouts without manual correction cycles.

Payouts run through PayPal, Wise, or bank transfer, with tax form collection and EU invoicing handled in the same system. Every payout is recorded and exportable.

Ten years in market and 3000+ customers. Built for recurring revenue, so partner growth stays accurate and manageable as revenue increases.

ZIP Code API

Website
zip-codes.com
Pricing URL
-
$ Details
-
Release Date
2026 April
Startup details
Country
United States
State
NY
City
Hopewell Junction
Edit details

FirstPromoter

Website
firstpromoter.com
Pricing URL
Official FirstPromoter Pricing
$ Details
Free Trial $49 / Monthly
Release Date
-
Startup details
Country
Romania
State
Transilvania
City
Cluj-Napoca
Founder(s)
Virgil Cioaca
Employees
10 - 19
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.

FirstPromoter features and specs

  • Easy to Use
    FirstPromoter offers an intuitive interface that simplifies the setup and management of affiliate programs, making it accessible even to users without technical skills.
  • Integration Capabilities
    The platform integrates seamlessly with various third-party tools such as payment processors, email marketing services, and CRMs, making it versatile and adaptable to different business needs.
  • Real-Time Analytics
    Users get access to real-time data and detailed analytics, allowing for immediate insights into the performance of their affiliate campaigns.
  • Automated Payouts
    FirstPromoter provides an automated payout system, which reduces administrative overhead and ensures timely payments to affiliates.
  • Customizable
    The platform offers customization options for affiliate dashboards, referral links, and program terms, allowing businesses to tailor the experience to their brand.

Possible disadvantages of FirstPromoter

  • Pricing
    FirstPromoter might be considered expensive for small businesses or startups due to its subscription-based pricing model.
  • Limited Free Plan
    The free plan comes with limitations, which may restrict access to some advanced features and functionalities.
  • Complex for Large Campaigns
    While the platform is easy to use for small to medium campaigns, managing very large and complex campaigns can become cumbersome.
  • Customer Support
    Some users have reported that customer support response times could be quicker, which might be a drawback for businesses that need immediate assistance.
  • Lack of Advanced Features
    Issues like lack of more advanced marketing automation features or in-depth custom reporting can be a drawback for more seasoned marketers.

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 FirstPromoter

Overall verdict

  • Yes, FirstPromoter is a good option for businesses looking to leverage affiliate marketing to grow their customer base. Its robust features and user-friendly interface make it a reliable choice for both small startups and larger enterprises.

Why this product is good

  • FirstPromoter is generally considered a good affiliate marketing tool because it provides an easy-to-use platform for managing referral programs. It offers seamless integration with various payment processors, customizable reward structures, detailed analytics, and automated workflows, which help businesses efficiently track and optimize their affiliate marketing efforts.

Recommended for

  • e-commerce businesses looking to expand their reach
  • SaaS companies aiming to increase subscriptions through referrals
  • Content creators who want to monetize their audience network
  • Startups seeking cost-effective marketing solutions

ZIP Code API videos

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FirstPromoter videos

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Category Popularity

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

ZIP Code API

FirstPromoter

Zip Lookup
100 100%
Zip Lookup
0% 0
Affiliate Marketing
0 0%
Affiliate Marketing
100% 100
APIs
100 100%
APIs
0% 0
Advertising
0 0%
Advertising
100% 100

User comments

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

Based on our record, FirstPromoter seems to be more popular. It has been mentiond 4 times 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.

FirstPromoter mentions (4)

  • Any affiliate platform for SaaS products to recommend?
    We have used https://firstpromoter.com/ for our SaaS product and it has been a good experience till date for us. You may check it out on our website https://roboresponse.ai/affiliate.html . Source: over 2 years ago
  • best affiliate network for a saas?
    We've been using https://firstpromoter.com/ - no complaints so far. Have a handful of referrals through there so far. Source: about 3 years ago
  • Have you started an affiliate program yet? What affiliate management platform are you using?
    Yes, we are doing this for all of our products. ContentStudio, Replug, and Usermaven. Affiliate management software that we are using through firstpromoter.com. Source: over 3 years ago
  • how to automate affiliate marketing payout?
    I intend on using https://firstpromoter.com/. Source: over 4 years ago

What are some alternatives?

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

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

Tapfiliate - Affiliate, referral and influencer marketing tracking software for eCommerce & SaaS.

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

Post Affiliate Pro - Post Affiliate Pro powers 27,000+ businesses. Get advanced tracking, automation, and seamless integrations. Start your 30-day free trial today—no credit card needed!

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

Refersion - Seamless influencer tracking system for online retailers.

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