Colorado State Data — United States (US)

Code: CO Country: US Capital: Denver Pop: 5.8 million

Colorado (CO) is a state of United States (US) with capital Denver. Get Colorado cities, zip codes and geographic data via the Country Data API REST endpoints. Query by country code 'US' and state code 'CO'. Free to start, JSON, plans from $9.99/mo.

Get Colorado cities and zip codes via API

Use the United States country code US and the state code CO to query Colorado-specific geographic data.

Cities in Colorado

All cities and localities in Colorado, United States

Get cities

Zip / Postal Codes in Colorado

Complete postal code dataset for Colorado

Get zip codes

All states of United States

List every state/province in United States

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API Request Example

Fetch cities in Colorado (CO) via the REST API.

Cities by state

GET https://api.countrydataapi.com/v1/cities/by-state?country=US&state=CO

Authorization: Bearer YOUR_API_KEY

cURL example

curl "https://api.countrydataapi.com/v1/zipcode/by-state?country=US&state=CO"   -H "Authorization: Bearer YOUR_KEY"

Cities in Colorado

Access Colorado cities & zip codes via API

Integrate Colorado (United States) geographic data into your application. One API for all countries, states, cities and zip codes.