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PostalCodes.app VS ZipCheckup

Compare PostalCodes.app VS ZipCheckup and see what are their differences

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

PostalCodes.app logo PostalCodes.app

Access to worldwide postal code data

ZipCheckup logo ZipCheckup

Check water quality, product recalls, energy rebates, and safety alerts for any U.S. ZIP code. Free reports powered by EPA and government data.
  • PostalCodes.app Landing page
    Landing page //
    2021-07-19
  • ZipCheckup
    Image date //
    2026-04-04

ZipCheckup analyzes 50+ federal data sources (EPA, FEMA, CDC, USGS, Census) to generate free home safety reports for all 42,679 U.S. ZIP codes. Covers water quality, lead risk, PFAS contamination, flood risk, radon, wildfire, earthquake, mold, and 9 more safety categories. 283,000+ pages, updated daily.

PostalCodes.app

Website
postalcodes.app
Pricing URL
Official PostalCodes.app Pricing
$ Details
-
Release Date
-
Edit details

ZipCheckup

Website
zipcheckup.com
Pricing URL
-
$ Details
Release Date
2026 March
Startup details
Country
United States
Founder(s)
Artem Akulov
Employees
1 - 9
Edit details

Analysis of PostalCodes.app

Overall verdict

  • PostalCodes.app is a useful and reliable tool for looking up and validating postal code data across multiple countries, offering a clean interface and developer-friendly access.

Why this product is good

  • Provides accurate and up-to-date postal code data for many countries
  • Offers an API that makes integration into apps and websites straightforward
  • Clean, simple user interface that is easy to navigate
  • Useful for validating addresses and reducing shipping or data-entry errors
  • Saves developers time compared to building and maintaining their own postal code database

Recommended for

  • Developers building applications that need address or postal code validation
  • E-commerce businesses needing accurate shipping and location data
  • Logistics and delivery companies managing regional data
  • Data analysts working with geographic or demographic information
  • Anyone needing quick lookups of postal codes across multiple countries

Analysis of ZipCheckup

Overall verdict

  • ZipCheckup appears to be a niche, lightweight tool for looking up ZIP code data and validating addresses, suitable for quick reference or small-scale verification needs, though it's not a widely recognized or heavily reviewed platform.

Why this product is good

  • Provides quick ZIP code lookups and related location data
  • Simple, easy-to-use interface for basic address verification tasks
  • Free access for casual use, which is helpful for occasional lookups
  • Useful for cross-referencing ZIP codes with cities and states

Recommended for

  • Individuals needing quick ZIP code verification
  • Small business owners checking customer address details occasionally
  • Online sellers verifying shipping information
  • Users who need a simple, no-frills ZIP lookup tool without heavy integrations

Category Popularity

0-100% (relative to PostalCodes.app and ZipCheckup)

PostalCodes.app

ZipCheckup

Developer Tools
100 100%
Developer Tools
0% 0
Home
0 0%
Home
100% 100
API Tools
100 100%
API Tools
0% 0
Lifestyle
0 0%
Lifestyle
100% 100

User comments

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Social recommendations and mentions

ZipCheckup might be a bit more popular than PostalCodes.app. We know about 1 link to it since March 2021 and only 1 link to PostalCodes.app. 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.

PostalCodes.app mentions (1)

  • API to Access worldwide postal code and zip code range data
    Hey r/API, I made PostalCodes.app, which is an API to access worldwide postal code and zip code range data, I tried to make it simple, and also made simple documentation, would like to hear your thoughts. Source: almost 5 years ago

ZipCheckup mentions (1)

  • I Built a 278,000-Page Website From Federal Data for $5/Month
    I spent the last few months stitching it all together into one site. ZipCheckup. Type in a ZIP code, get a full home safety profile. 278,000 pages. 50+ data sources. Running on $5/month. - Source: dev.to / 3 months ago

What are some alternatives?

When comparing PostalCodes.app and ZipCheckup, you can also consider the following products

Mock API Generator - Generate custom data & API to build apps in less than 30s

usZIPCodes.org - Use our free ZIP Code Analysis Tool to find city, state, county, population, and timezone details for any U.S. ZIP code. Fast, accurate, and privacy-safe lookup.

Sheety - Turn any Google sheet into an API instantly, for free. Power websites, apps, or whatever you like, all from a spreadsheet. Changes to your spreadsheet update your API in realtime. Neat

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

ConsumerCloudServices Consumer Address Finder - Fast, accurate UK postcode lookup API โ€” simple, reliable, affordable, with extra property details built in

Loqate - The Standard in Global Address Verification

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