This listing is largely based on the Oxfordshire places whose descriptions are included in the The National Gazetteer of Great Britain and Ireland (1868), so is largely a listing of Oxfordshire's historic parishes, together with the 14 Oxfordshire Hundreds, and numerous villages, hamlets, etc.
There are still some oddities in the parish names - it's work in progress!
Key: but there may still be some errors in the labels!
P: Parish - H: Hundred - T: Town, Village, Hamlet, or City (i.e. a place)