| Name | Frederick County |
| State | Maryland |
| FIPS Code | 24021 |
| County Seat | Frederick |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 294,154 |
| Population Growth Rate(2020-2024) | 7.63% |
| Majority Ethnicity | White 71.22% |
| Public School Majority Ethnicity | White 52% |
| Partisan Voting Index | Democratic:+3 |
| Unemployment Rate (May 2026) | 4.4% |
| Sales Tax Rate (2025) | 6% |
| Area Code(s) | 240 / 301 / 410 / 443 / 667 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 71.22% |
| African American | 10.45% |
| Hispanic | 12.49% |
| Asian | 5.5% |
| Native American | 0.28% |
| Hawaiin/Pacific Islander | 0.06% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 52.19% |
| African American | 13.73% |
| Hispanic | 19.93% |
| Asian | 7.05% |
| Native American | 0.23% |
| Hawaiin/Pacific Islander | 0.14% |