Grafton
- County:
- Ozaukee County
- County Seat:
- No
- Area (mi²):
- 5.238
- State:
- Wisconsin
Grafton is a village located in Ozaukee County, Wisconsin. Grafton has a 2026 population of 12,741. Grafton is currently growing at a rate of 1.15% annually and its population has increased by 5.41% since the most recent census, which recorded a population of 12,087 in 2020.