Colesville is a cdp located in Montgomery County, in the state of Maryland (MD), United States. Nestled in the South Atlantic division of the South region, it covers an area of 9.2 square miles (24.0 km²) and sits at an elevation of 440 ft. With a population of approximately 19,810 residents, Colesville offers a vibrant community life.
The town's population is composed of about 48.64% males and 51.36% females, and it has a population density of 143.94 people per square mile (827.78/km²). Colesville lies at a latitude of 39.08 and a longitude of -77, operating in the UTC-5.
Locals reflect a blend of American ancestry, with roots primarily in United States (0%), followed by English (8.8%), German (9.6%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 20904.