Delavan
- County:
- Walworth County
- County Seat:
- No
- Area (mi²):
- 7.41
- State:
- Wisconsin
Delavan is a city located in Walworth County, Wisconsin. Delavan has a 2026 population of 9,055. Delavan is currently growing at a rate of 2.79% annually and its population has increased by 6.13% since the most recent census, which recorded a population of 8,532 in 2020.