
Jefferson
- County:
- Frederick County
- County Seat:
- No
- Area (mi²):
- 2.786
- State:
- Maryland
Jefferson is a CDP located in Frederick County, Maryland. Jefferson has a 2025 population of 2,900. Jefferson is currently growing at a rate of 1.86% annually and its population has increased by 12.53% since the most recent census, which recorded a population of 2,577 in 2020.
The average household income in Jefferson is $176,116 with a poverty rate of 4.05%. The median age in Jefferson is 41.2 years: 40.6 years for males, and 41.8 years for females.