U.S. PLACE PROFILE
Longmont, CO
Longmont is a City in Boulder County, Colorado. The loaded 2025 population estimate is 100,109.
Published locationColorado
Population estimate100,1092025 loaded Census estimate
CountyBoulder CountyPrimary loaded county
Place typeCityCensus place classification
Coordinates40.16820, -105.10052Census representative point
EXPLORE FROM LONGMONT
Distance and nearby-place tools
Only tools with enough qualifying stored data are linked below.
Closest published places
Nearest qualifying Census places by straight-line distance.
Mead, CO7.2 miles · NE
Frederick, CO7.9 miles · SE
Firestone, CO8.1 miles · E
Erie, CO9.4 miles · S→Lyons, CO9.6 miles · NW
Berthoud, CO10.7 miles · NE
County coverage
Some incorporated places cross county lines. These county-part values come from the loaded Census county-place-part population layer.
| County | 2025 population in this place part |
|---|---|
| Weld County | 1,302 |
| Boulder County | 98,807 |
DATA COVERAGE
What is available for Longmont
Geographic identityNearby placesPopulation estimate100-mile radius25-mile radius50-mile radius
PRIMARY GEOGRAPHIC SOURCE
U.S. Census Bureau
Place identity, coordinates and geographic identifiers are tied to the loaded Census source record for this location.