Northglenn
- County:
- Adams County
- County Seat:
- No
- Area (mi²):
- 7.36
- State:
- Colorado
Northglenn is a city located in Adams County, Colorado. Northglenn has a 2026 population of 38,287. Northglenn is currently declining at a rate of -0.11% annually but its population has increased by 0.65% since the most recent census, which recorded a population of 38,040 in 2020.