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ZIP Code API VS Rewardful

Compare ZIP Code API VS Rewardful 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

Rewardful logo Rewardful

All-in-One Affiliate Management Software for SaaS
  • 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

  • Rewardful Rewardful home page
    Rewardful home page //
    2024-02-19

Instantly set up affiliate and referral programs with Stripe & Paddle.

Rewardful is a simple way for SaaS companies to set up affiliate and referral programs with Stripe & Paddle. Just connect your account and let us track referrals, discounts, and commissions for you!

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

Rewardful

Website
rewardful.com
Pricing URL
Official Rewardful Pricing
$ Details
paid Free Trial $49 / Monthly (0% transaction fee)
Platforms
Web
Release Date
-
Startup details
Country
Canada
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.

Rewardful features and specs

  • Unlimited affiliates
  • Unlimited visitors
  • Stripe integration
  • Paddle integration
  • REST API access
  • Single Sign On (SSO)
  • PayPal Mass Payouts
  • Wise Bulk Payouts
  • Chat, email & phone support
  • Unlimited Campaigns
  • Branded affiliate portal
  • Custom domain
  • Unlimited team members
  • Multiple currencies
  • Double-sided incentives
  • Private invite-only campaigns
  • Custom rewards
  • Custom scripts
  • Custom agreement

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 Rewardful

Overall verdict

  • Yes, Rewardful is generally regarded as a good tool for managing affiliate and referral programs, especially for small to medium-sized businesses looking for a simple yet powerful solution.

Why this product is good

  • Rewardful is considered a good option for businesses and creators looking to establish affiliate and referral programs. It offers an easy-to-use platform that integrates with popular payment processors like Stripe, making it convenient to manage payouts. Users appreciate its straightforward setup process, detailed analytics, and the ability to customize commission structures, which helps in efficiently tracking and incentivizing partners.

Recommended for

  • SaaS companies
  • E-commerce businesses
  • Content creators looking to monetize their followers
  • Businesses utilizing Stripe for payments
  • Startups wanting to grow through affiliate marketing

ZIP Code API videos

No ZIP Code API videos yet. You could help us improve this page by suggesting one.

Add video

Rewardful videos

+ Add

Affiliate Software for Communities: How Coupon Codes Drive Short & Sweat's Rapid Growth

More videos:

  • Review - How OpusClip Went from Zero to Six Figures in Affiliate Revenue in a Few Months
  • Review - How Uplisting Earns $700k in Referral Sales with Rewardful
  • Review - Affiliate & Referrals Programs with Stripe & Rewardful

Category Popularity

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

ZIP Code API

Rewardful

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

Questions & Answers

As answered by people managing ZIP Code API and Rewardful.

How would you describe the primary audience of your product?

Rewardful's answer:

Rewardful was created to offer SaaS founders, indie hackers, and solopreneurs a way to create a new revenue channel with affiliate marketing.

Who are some of the biggest customers of your product?

Rewardful's answer:

  • Opus Clip
  • Uplisting
  • Memberstack
  • Copy.ai
  • Transistor.fm
  • GoRails
  • Uscreen
  • Hunter
  • Podia

User comments

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

Based on our record, Rewardful seems to be more popular. It has been mentiond 2 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.

Rewardful mentions (2)

  • Earn 50% Commission
    Our Affiliate system is fully automated now, thanks to https://rewardful.com . To be part of our Affiliate Team and earn 50% commission, sign up at https://thealgorists.getrewardful.com/signup. Source: over 4 years ago
  • Did anyone try affiliate marketing for your SaaS?
    We use rewardful. https://getrewardful.com. Source: almost 5 years ago

What are some alternatives?

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

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

Tolt - Affiliate Marketing Software for SaaS startups

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

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

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

PartnerStack - GrowSumo helps growing companies increase sales, signups, and leads through partnerships Whether you're starting fresh, migrating a partner program, or ready for hyper-growth - we're ready, are you?

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