| County | Total County Population | Senate District # | County Population in District | % of County in District | % of District in County |
| Gwinnett | 588,448 | 45 | 146,760 | 24.9 | 100.0 |
| 588,448 | 41 | 46,328 | 7.9 | 31.4 | |
| 588,448 | 40 | 20,231 | 3.4 | 13.8 | |
| 588,448 | 5 | 139,855 | 23.8 | 95.1 | |
| 588,448 | 48 | 51,648 | 8.8 | 35.1 | |
| 588,448 | 55 | 36,983 | 6.3 | 25.4 | |
| 588,448 | 9 | 146,643 | 24.9 | 100.0 | |
| DeKalb | 665,865 | 41 | 101,061 | 15.2 | 68.6 |
| 665,865 | 42 | 145,567 | 21.9 | 100.0 | |
| 665,865 | 55 | 108,678 | 16.3 | 74.6 | |
| 665,865 | 40 | 126,399 | 19.0 | 86.2 | |
| 665,865 | 43 | 87,697 | 13.2 | 60.3 | |
| 665,865 | 5 | 7,242 | 1.1 | 4.9 | |
| 665,865 | 10 | 89,221 | 13.4 | 61.6 | |