Nationalize.io

API

Estimate nationality from a first name via REST API

Overview

Nationalize.io offers a RESTful API to predict the nationality of a first name. The core endpoint is a GET request to the root URL with a 'name' parameter (e.g., https://nationalize.io/?name=anna). Responses are JSON-formatted, including a list of countries with probability scores indicating how likely the name belongs to each nationality. Use cases include user onboarding localization (pre-filling country fields), data enrichment for name datasets, and demographic trend analysis in apps or research.

Example Integration (JavaScript)

script.js JS


fetch('https://nationalize.io')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API
JSON response format
No API key required
Supports multiple names per request

Frequently Asked Questions

? Is Nationalize.io free to use?

Yes, Nationalize.io provides free access with rate limits. Paid tiers may be available for higher usage volumes.

? Does it require an API Key?

No, the basic version of Nationalize.io does not require an API key for access.

? What is the response format?

All responses are in JSON format, containing country codes and their corresponding probability scores for the input name.

Top Alternatives

APILayer Nationality API Search Google

NameAPI Search Google

Tool Info

Pricing Free

Category Development

Platform Public API

Pros

⊕ Easy integration (no auth needed)
⊕ Fast response times
⊕ Simple endpoint structure
⊕ Free basic usage

Cons

⊖ Rate-limited for free users
⊖ Limited to first names only
⊖ No SLA for free tier
⊖ No support for last names/full names