About Arapahoe County
Arapahoe County is a mid-sized city located in United States, in the Colorado region. According to the latest available data (2026), the population of Arapahoe County is approximately 655,070 residents, making it the #106 most populous city in United States.
Globally, Arapahoe County ranks #2,838 among the world's most populated cities.
Arapahoe County City Statistics
| City | Arapahoe County |
| Country |  United States |
| Population | 655,070 |
| Global Rank | #2,838 |
| Rank in United States | #106 of 867 cities |
| City Category | mid-sized city |
| Region | Colorado |
| Latitude | 39.64 |
| Longitude | -104.33 |
| Data Year | 2026 |
Population Comparison
To put Arapahoe County's population of 655,070 into perspective:
- Arapahoe County has over 655,000 residents.
Where is Arapahoe County Located?
Arapahoe County is located in United States, in the Colorado region, at coordinates 39.64° latitude and -104.33° longitude. Arapahoe County sits in the subtropics, typically enjoying warm temperatures year-round.
Nearby Cities
Other Cities in United States
Largest Cities in United States
| # | City | Population |
|---|---|---|
| 1 | Harris County | 4,731,145 |
| 2 | Los Angeles | 3,898,747 |
| 3 | San Diego County | 3,298,634 |
| 4 | Brooklyn | 2,736,074 |
| 5 | Miami-Dade County | 2,701,767 |
Frequently Asked Questions
What is the population of Arapahoe County?
The population of Arapahoe County is approximately 655,070 residents according to the latest available data (2026).
Where is Arapahoe County located?
Arapahoe County is located in United States at approximately 39.64° latitude and -104.33° longitude.
Is Arapahoe County one of the largest cities in United States?
With a population of 655,070, Arapahoe County is one of the notable urban areas in United States. It ranks #106 out of 867 cities in the country.
