
Brunswick
- County:
- Frederick County
- County Seat:
- No
- Area (mi²):
- 3.275
- State:
- Maryland
Brunswick is a city located in Frederick County, Maryland. Brunswick has a 2025 population of 8,651. Brunswick is currently growing at a rate of 2.02% annually and its population has increased by 10.97% since the most recent census, which recorded a population of 7,796 in 2020.
The average household income in Brunswick is $131,581 with a poverty rate of 6.41%. The median age in Brunswick is 36.7 years: 36.9 years for males, and 36.1 years for females.