The City of Northglenn is a home rule municipality located in Adams and Weld counties, Colorado, United States. Northglenn is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area. As of the 2020 census the city's population was 38,131. It was built as a master planned community in 1959 by Jordon Perlmutter.

Adams County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 519,572. The county seat is Brighton, and the largest city is Thornton. The county is named for Alva Adams, an early Governor of the State of Colorado in 1887–1889. Adams County is part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area.