Nationalize.io

Free REST API that predicts the nationality of a person based on their first name using probabilistic models derived from a dataset of approximately one billion people spanning 250 countries and territories. Accepts single or batched names, handles diacritics and non-Latin alphabets, and returns ranked country probabilities as JSON. The same API key works across all three Demografix services (Genderize, Agify, Nationalize).

1 APIs 0 Features

NationalityName PredictionDemographicsProbabilistic ModelsPeople

APIs

Nationalize.io API

Predicts the nationality of a person based on their name, returning ranked country probabilities drawn from a dataset of approximately one billion people. Supports single name l...

Pricing Plans

Nationalize Plans Pricing

4 plans

PLANS

Rate Limits

Nationalize Rate Limits

5 limits

RATE LIMITS

FinOps

Nationalize Finops

FINOPS

Semantic Vocabularies

Nationalize Context

2 classes · 5 properties

JSON-LD

Example Payloads

Batch Name Lookup

3 fields

EXAMPLE

Name Not Found

3 fields

EXAMPLE

Single Name Lookup

3 fields

EXAMPLE

Resources

Sources

aid: nationalize
name: Nationalize.io
description: Free REST API that predicts the nationality of a person based on their first name using probabilistic models
  derived from a dataset of approximately one billion people spanning 250 countries and territories. Accepts single or batched
  names, handles diacritics and non-Latin alphabets, and returns ranked country probabilities as JSON. The same API key works
  across all three Demografix services (Genderize, Agify, Nationalize).
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/nationalize/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- Nationality
- Name Prediction
- Demographics
- Probabilistic Models
- People
apis:
- aid: nationalize:nationalize-api
  name: Nationalize.io API
  description: Predicts the nationality of a person based on their name, returning ranked country probabilities drawn from
    a dataset of approximately one billion people. Supports single name lookups, batched requests of up to 10 names, full
    name parsing, diacritics, and optional country scoping.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://nationalize.io/documentation
  baseURL: https://api.nationalize.io
  tags:
  - Nationality
  - Name Prediction
  - Demographics
  properties:
  - type: Documentation
    url: https://nationalize.io/documentation
  - type: Pricing
    url: https://nationalize.io/pricing
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/nationalize/refs/heads/main/openapi/nationalize-openapi.json
common:
- type: Website
  url: https://nationalize.io
- type: Documentation
  url: https://nationalize.io/documentation
- type: Pricing
  url: https://nationalize.io/pricing
- type: Plans
  url: https://raw.githubusercontent.com/api-evangelist/nationalize/refs/heads/main/plans/nationalize-plans-pricing.yml
- type: RateLimits
  url: https://raw.githubusercontent.com/api-evangelist/nationalize/refs/heads/main/rate-limits/nationalize-rate-limits.yml
- type: FinOps
  url: https://raw.githubusercontent.com/api-evangelist/nationalize/refs/heads/main/finops/nationalize-finops.yml
- type: TermsOfService
  url: https://nationalize.io/legal/terms-and-conditions
- type: PrivacyPolicy
  url: https://nationalize.io/legal/privacy-policy
- type: FAQ
  url: https://nationalize.io/faq
- type: Login
  url: https://nationalize.io/login
- type: Signup
  url: https://nationalize.io/register
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com