Ross-on-Wye is a market town and civil parish in Herefordshire, England, near the border with Wales. It had a population estimated at 10,978 i…Ross-on-Wye is a market town and civil parish in Herefordshire, England, near the border with Wales. It had a population estimated at 10,978 in 2021. It lies in south-east of the county, on the River Wye and on the northern edge of the Forest of Dean.