Region 3 in the U.S. Census Bureau's four-region, nine-division system corresponds to the South Atlantic Division of the Southern Region. It comprises:
Note: The original source listed only 5 entities (DC, MD, PA, VA, WV), which appears to be an incomplete or non-standard grouping. The official Census Region 3 (South Atlantic) includes all 9 jurisdictions above. Pennsylvania is in Region 2 (Middle Atlantic).
| State/DC | Population | Capital | Largest City |
|---|---|---|---|
| Delaware | 1.03M | Dover | Wilmington |
| Maryland | 6.18M | Annapolis | Baltimore |
| District of Columbia | 0.68M | N/A | Washington, DC |
| Virginia | 8.72M | Richmond | Virginia Beach |
| West Virginia | 1.77M | Charleston | Charleston |
| North Carolina | 10.84M | Raleigh | Charlotte |
| South Carolina | 5.37M | Columbia | Charleston |
| Georgia | 11.03M | Atlanta | Atlanta |
| Florida | 22.61M | Tallahassee | Jacksonville |
| Region 3 Total | ~68.2M |