These cities within Gwinnett County operate their own police departments.
| Auburn | 770.513.8657 |
| Braselton | 706.654.3915 |
| Duluth | 770.476.1790 |
| Lawrenceville | 770.339.2443 |
| Lilburn | 770.921.2211 |
| Loganville | 770.466.8087 |
| Norcross | 770.448.2111 |
| Snellville | 770.985.3555 |
| Suwanee | 770.945.8995 |
