Rio (, ) is an

unincorporated community An unincorporated area is a region that is not governed by a local municipal corporation. Widespread unincorporated communities and areas are a distinguishing feature of the United States and Canada. Most other countries of the world either have ...

and

census-designated place A census-designated place (CDP) is a concentration of population defined by the United States Census Bureau for statistical purposes only. CDPs have been used in each decennial census since 1980 as the counterparts of incorporated places, such ...

in Albemarle County,

Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth ar ...

. It is directly northeast of

Charlottesville Charlottesville, colloquially known as C'ville, is an independent city in the Commonwealth of Virginia. It is the county seat of Albemarle County, which surrounds the city, though the two are separate legal entities. It is named after Queen Cha ...

. The population at the 2020 census was 2,076.https://data.tennessean.com/census/total-population/total-population-change/rio-cdp-virginia/160-5167288/

References

Unincorporated communities in Virginia Unincorporated communities in Albemarle County, Virginia {{AlbemarleCountyVA-geo-stub