City profile · United States · North America
Boulder
City population
106,803
#301
in United States
#12
in Colorado
#5,374
worldwide
40.015, -105.271 · 2,417 km from Washington
About Boulder
Boulder is a city in Colorado, United States with a population of 106,803. It is the 301st largest of the 3,112 cities of 15,000 or more listed in United States, and the 5,374th largest worldwide. It lies 2,417 km from Washington.
Key Facts
Country
Region
Rank in region
#12of 43
Elevation
1,624 m
Time zone
America/Denver
Coordinates
40.015, -105.271
Record updated
2025-06-26
Entry edited, not measured
City population, GeoNames. GeoNames publishes no year for its population figures, so “record updated” is when the entry was last edited — not the date the population was measured.
Nearby Cities
All 3,112 in United StatesClosest listed cities by great-circle distance from the city centre.