Map of Longmont, United States

Longmont is a city in Colorado, United States, with a population of about 92,088. It lies at 40.1672°N, 105.1019°W, about 1519 m above sea level. Longmont is about 2,401 km (1,492 mi) west of Washington, D.C., the capital. The nearest city on our map is Boulder, 22 km to the southwest.

Longmont at a glance

Where is Longmont?

• The 14th largest city in Colorado on this site.
• Located in the Northern and Western hemispheres.
• Daylight ranges from about 9 h 18 min on the shortest day to 15 h 02 min on the longest day (around 21 December and 21 June).

Cities near Longmont

• Boulder — 22 km southwest
• Loveland — 26 km north
• Broomfield — 27 km south
• Brighton — 31 km southeast
• Northglenn — 33 km south
• Thornton — 35 km south
• Westminster — 37 km south
• Arvada — 41 km south
• Commerce City — 42 km south
• Greeley — 44 km northeast

Largest cities in Colorado

• Denver — 729,019
• Colorado Springs — 456,568
• Aurora — 359,407
• Fort Collins — 170,924
• Lakewood — 152,597
• Thornton — 133,451
• Westminster — 116,317
• Arvada — 115,368
• Centennial — 109,741
• Pueblo — 109,412

Largest cities in United States

• New York City — 8,804,190
• Los Angeles — 3,820,914
• Brooklyn — 2,736,074
• Chicago — 2,664,452
• Queens — 2,316,841
• Houston — 2,314,157
• Phoenix — 1,650,070
• Philadelphia — 1,573,916
• San Antonio — 1,526,656
• Manhattan — 1,487,536

Map of United States and all its cities →

Sources: place names, coordinates, populations and time zones from GeoNames (CC BY 4.0, data retrieved October 2026). Population figures are the latest values recorded in GeoNames; depending on the country they refer to the city proper, a municipality or a wider urban area, so they can differ from census or metro-area figures. Map © OpenStreetMap contributors.