Grafton
- County:
- Walsh County
- County Seat:
- No
- Area (mi²):
- 3.303
- State:
- North Dakota
Grafton is a city located in Walsh County, North Dakota. Grafton has a 2026 population of 4,027. Grafton is currently declining at a rate of -0.74% annually and its population has decreased by -3.13% since the most recent census, which recorded a population of 4,157 in 2020.