| Name | Arlington County |
| State | Virginia |
| FIPS Code | 51013 |
| County Seat | Arlington |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 209,077 |
| Population Growth Rate(2000-2022) | 14.94% |
| Majority Ethnicity | White 76.28% |
| Public School Majority Ethnicity | White 43% |
| Partisan Voting Index | Strongly Democratic:+32 |
| Unemployment Rate (November 2024) | 2.4% |
| Area Code(s) | 571 / 703 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 76.28% |
| African American | 10.95% |
| Hispanic | 0.43% |
| Asian | 12.1% |
| Native American | 0.12% |
| Hawaiin/Pacific Islander | 0.12% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 42.65% |
| African American | 10.61% |
| Hispanic | 29.74% |
| Asian | 8.78% |
| Native American | 0.17% |
| Hawaiin/Pacific Islander | 0.04% |