Onley
- County:
- Accomack County
- County Seat:
- No
- Area (mi²):
- 0.8
- State:
- Virginia
Onley is a town located in Accomack County, Virginia. Onley has a 2026 population of 537. Onley is currently growing at a rate of 0.37% annually and its population has increased by 0.19% since the most recent census, which recorded a population of 536 in 2020.