| Place Name | Jarrettsville |
| Place Type | Census Designated Place |
| ZIP Code(s) | 21084 |
| County | Harford County |
| Area Code(s) | 410,443,667 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 3,326 |
| Population Growth Rate (2010-19) | -0.96% |
| Majority Ethnicity | White 94.47% |
| Metro/Micro Stats Area | Baltimore-Columbia-Towson, MD |
| US Congressional District(s) | Maryland 1st |
| House of Delegates Districts | 7,35B |
| State Senate Districts | 7,35 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.47% |
| African American | 1.71% |
| Hispanic | 0% |
| Asian | 0.48% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.34% |