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PostalDataPI VS PostalCodes.app

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

Modelence
Create production-ready applications with zero code featured
Contents:
  1. ยป Base Details
  2. ยป Videos
  3. ยป Reviews
  4. ยป Alternatives

PostalDataPI logo PostalDataPI

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

PostalCodes.app logo PostalCodes.app

Access to worldwide postal code data
  • PostalDataPI Landing page
    Landing page //
    2026-04-08

PostalDataPI is a global postal code validation and enrichment API covering 240+ countries and territories. One API, one key, one flat rate โ€” $0.000028 per query with no tiers or subscriptions.

What you get back: Up to 18 metadata fields per postal code โ€” city, state/region, coordinates, timezone, three levels of administrative hierarchy, elevation, and more. Sub-5ms cached responses.

Works everywhere: US ZIP codes, UK postcodes, German PLZ, Japanese postal codes, Canadian FSAs, and 230+ more. Format normalization handles case, spacing, and hyphen variations automatically.

Get started in 60 seconds: 1,000 free queries on signup, no credit card required. SDKs for Python and Node.js. MCP server for AI agents (Claude, Cursor, etc.).

Built for developers: REST API, consistent JSON responses across all countries, OpenAPI spec, llms.txt for AI agent discovery.

  • PostalCodes.app Landing page
    Landing page //
    2021-07-19

PostalDataPI features and specs

  • Specialized Postal Data
    PostalDataPI focuses specifically on postal and address-related data, providing dedicated endpoints for ZIP code lookups, address validation, and geographic postal information, making it a niche solution for mailing and logistics needs.
  • Simple API Integration
    The API appears to offer straightforward RESTful endpoints that are relatively easy to integrate into existing applications, requiring minimal setup and configuration for developers.
  • Useful for Address Validation
    The service can help businesses validate and standardize mailing addresses, reducing undeliverable mail, saving postage costs, and improving data quality in customer databases.
  • Geographic Data Enrichment
    PostalDataPI can enrich address data with additional geographic information such as coordinates, county, and timezone details associated with postal codes, which is valuable for analytics and location-based services.
  • Lightweight and Focused
    As a specialized micro-API, it avoids the bloat of larger platforms, offering a focused toolset that does one thing well โ€” handling postal and ZIP code data without unnecessary complexity.

PostalCodes.app features and specs

No features have been listed yet.

Analysis of PostalDataPI

Overall verdict

  • I don't have verified, up-to-date information specifically about PostalDataPI (postaldatapi.com), including details on its accuracy, pricing, uptime, or customer reviews. I can't confirm whether it's a good product without more direct data or firsthand testing, so I'd recommend evaluating it yourself using the criteria below before committing.

Why this product is good

  • Unable to verify specific claims about data accuracy, coverage, or update frequency for this service
  • No confirmed information on pricing tiers, rate limits, or API reliability (SLA/uptime)
  • No verified user reviews, testimonials, or third-party comparisons available
  • Company background, support quality, and documentation quality are unconfirmed
  • If considering this service, check for: free trial/sandbox access, transparent pricing, data source citations, response time benchmarks, and independent reviews on sites like G2 or Trustpilot

Recommended for

  • Not able to make a specific recommendation without verified data
  • Best approach: developers needing postal/address validation APIs should compare this against established alternatives (e.g., SmartyStreets, Lob, Google Maps Geocoding API, USPS Web Tools) based on documented accuracy and pricing
  • Suitable evaluation candidates: teams willing to test the API directly with sample data before integrating into production systems

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

PostalDataPI videos

+ Add

PostalDataPI Now Returns 18 Fields Per Postal Code โ€” for 240+ Countries

More videos:

  • Tutorial - PostalDataPI Tutorial: Your First Postal Code API Call in 5 Minutes

PostalCodes.app videos

No PostalCodes.app videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

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

PostalDataPI

PostalCodes.app

Geocoding
100 100%
Geocoding
0% 0
Developer Tools
30 30%
Developer Tools
70% 70
Address Verification API
100 100%
Address Verification API
0% 0
API Tools
0 0%
API Tools
100% 100

User comments

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Social recommendations and mentions

Based on our record, PostalCodes.app seems to be more popular. It has been mentiond 1 time 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.

PostalDataPI mentions (0)

We have not tracked any mentions of PostalDataPI yet. Tracking of PostalDataPI recommendations started around Apr 2026.

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

What are some alternatives?

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

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

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

Melissa Data Quality - Melissa helps companies to harness Big Data, legacy data, and people data (names, addresses, phone numbers, and emails).

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

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