Country Database for Developers: API and Widgets
If you've ever searched for a country database, countries database, or country data for developers, you've probably run into the same problems:
- inconsistent country lists
- missing subdivisions (states, regions)
- hardcoded validation rules
- different formats across backend and frontend
Most solutions solve only part of the problem.
We built CountriesDB to fix this properly.
A Real Country Database (Not Just a Static List)
CountriesDB is a developer-focused country database that gives you:
- full country data
- subdivision data (states, regions, provinces)
- consistent structure across all endpoints
- localization support
- validation-ready data
Instead of copying JSON files or maintaining your own database, you can use a single source of truth.
Use It as a Data API
You can access the entire countries database via API:
GET /api/countries
GET /api/subdivisions?country=US
GET /api/validate?country=US&subdivision=CA
This makes it easy to:
- power backend systems
- validate user input
- keep data consistent across services
No more syncing static files or writing custom validation logic.
Or Enhance Your Forms with Widgets
If you don't want to build everything from scratch, you can also use drop-in widgets.
They work with your existing UI using simple attributes like:
<select class="country-selection" data-name="country"></select>
<select class="subdivision-selection" data-country="country"></select>
No framework required.
Works with plain HTML, React, Vue, or any frontend stack.
Why Not Just Use a Static Country Database?
A static countries database seems simple at first, but quickly becomes a problem:
- updates are manual
- subdivision data is often incomplete
- validation rules differ across systems
- frontend and backend drift apart
With CountriesDB:
- API = always up-to-date
- validation = consistent everywhere
- frontend and backend use the same data
What is a country database?
A country database is a structured dataset that contains information about countries and often their subdivisions (states, provinces, regions).
Developers typically use it for:
- form inputs (country selectors)
- validation logic
- localization and regional behavior
- storing normalized location data
While many solutions rely on static JSON files, modern applications increasingly use country data APIs to ensure accuracy and consistency.
Best country database for developers
The best country database for developers should provide:
- reliable and complete country + subdivision data
- consistent formats across backend and frontend
- easy API access
- validation support
- minimal integration effort
CountriesDB is designed with these needs in mind, combining:
- a data API for backend systems
- drop-in widgets for frontend integration
This allows you to use the same data source across your entire stack without duplication or drift.
Built for Real Applications
This isn't just a dataset.
It's designed for:
- SaaS onboarding flows
- checkout forms
- CRM systems
- HR and payroll tools
- any system that depends on accurate country data
Get Started
If you're looking for a country database for developers, you can:
- explore the API: /docs
- test endpoints directly
- or try widgets in your forms
Stop hardcoding country data.
Use a proper system instead.