Country State City

About

Country State City provides 250+ countries, 5,000+ states, and 150,000+ cities as an NPM package, an MCP server for AI assistants, and an interactive web app — all ISO 3166-1 compliant.

Features

• 250+ Countries, 5K+ States, 150K+ Cities — ISO 3166-1 compliant
• Multiple Formats — JSON, CSV, XML, YAML output
• MCP Server — Connect to Claude Desktop and AI assistants
• TypeScript — Full type definitions included
• Dual Entry Points — Separate browser (ESM) and Node.js (CJS/ESM) builds
• Search — Filter countries, states, and cities by name
• Interactive Playground — Test the API at the live demo

Quick Start

npm install @tansuasici/country-state-city

import { CountryStateCity } from '@tansuasici/country-state-city';

const countries = CountryStateCity.getAllCountries();
const turkey = CountryStateCity.getCountryByIso2('TR');
const states = CountryStateCity.getStatesByCountryId(225);
const cities = CountryStateCity.getCitiesByStateId(2175);

// Search
const results = CountryStateCity.searchCountries('United');

// Different formats
const csv = CountryStateCity.getAllCountries('csv');
const xml = CountryStateCity.getStatesByCountryId(231, 'xml');
const yaml = CountryStateCity.getCitiesByStateId(1416, 'yaml');

MCP Integration

Use location data directly in Claude Desktop and other MCP-compatible AI assistants.

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "country-state-city": {
      "command": "npx",
      "args": ["@tansuasici/country-state-city", "mcp"]
    }
  }
}

11 Tools — search_countries, get_country, get_countries_by_region, get_states, search_states, get_cities, search_cities, get_stats, get_regions, get_timezones, get_currencies

5 Resources — ://countries, ://countries/{iso2}, ://countries/{iso2}/states, ://states/{id}/cities, ://stats

API Reference

Country Methods

CountryStateCity.getAllCountries(format?: 'json' | 'csv' | 'xml' | 'yaml');
CountryStateCity.getCountryById(id: number);
CountryStateCity.getCountryByIso2(iso2: string);
CountryStateCity.getCountryByIso3(iso3: string);
CountryStateCity.searchCountries(query: string);
CountryStateCity.getCountriesByRegion(region: string);
CountryStateCity.getCountriesBySubregion(subregion: string);

State Methods

CountryStateCity.getAllStates(format?: 'json' | 'csv' | 'xml' | 'yaml');
CountryStateCity.getStateById(id: number);
CountryStateCity.getStatesByCountryId(countryId: number, format?: string);
CountryStateCity.getStatesByCountryCode(countryCode: string, format?: string);
CountryStateCity.searchStates(query: string, countryId?: number);

City Methods

CountryStateCity.getAllCities(format?: 'json' | 'csv' | 'xml' | 'yaml');
CountryStateCity.getCityById(id: number);
CountryStateCity.getCitiesByStateId(stateId: number, format?: string);
CountryStateCity.getCitiesByCountryId(countryId: number, format?: string);
CountryStateCity.searchCities(query: string, stateId?: number, countryId?: number);

Utility Methods

CountryStateCity.getStats();
CountryStateCity.getAllRegions();
CountryStateCity.getAllSubregions();
CountryStateCity.getAllTimezones();
CountryStateCity.getAllCurrencies();
CountryStateCity.exportData(dataType, format, options?);

TypeScript

import {
  CountryStateCity,
  Country,
  State,
  City,
  DataFormat,
  FormatOptions,
} from '@tansuasici/country-state-city';

Development

# Install dependencies
npm install

# Start dev server
npm run dev

# Build NPM package
npm run build:lib

# Build MCP server
npm run build:mcp

# Run tests
npm test

Contributing

Contributions are welcome! Please read CONTRIBUTING.md for guidelines.

License

MIT — see LICENSE for details.