Places beginning with FO in Pennsylvania, United States
- Fogelsville
- Folcroft
- Folcroft, Borough of
- Foley
- Foley Corner
- Folsom
- Folstown
- Fombell
- Fontaine
- Fontana
- Footedale
- Foot of Ten
- Forbes Road
- Force
- Ford City
- Ford City, Borough of
- Ford Cliff
- Ford Cliff, Borough of
- Fordham
- Fords Edge
- Fordview
- Fordville
- Fordyce
- Foreman
- Forest
- Forest Chapel
- Forest City
- Forest City, Borough of
- Forest City Station
- Forest County
- Forest Glen
- Forest Grove
- Forest Grove
- Forest Hill
- Forest Hills
- Forest Hills
- Forest Hills
- Forest Hills, Borough of
- Forest Lake
- Forest Lake Park
- Forest Lake, Township of
- Forest Park
- Forest Park
- Forest Park
- Forestville
- Forestville
- Forestville
- Forks Church
- Forkston
- Forkston, Township of
- Forks, Township of
- Forks, Township of
- Forksville
- Forksville, Borough of
- Fort Allen
- Fort Couch
- Fortenia
- Fort Fetter
- Fort Hill
- Fort Hunter
- Fort Indiantown Gap
- Fort Littleton
- Fort Loudon
- Fortney
- Fort Robertson
- Fortuna
- Fort Washington
- Forty Fort
- Forty Fort, Borough of
- Forward
- Forwardstown
- Forward, Township of
- Forward, Township of
- Fossilville
- Foster
- Foster
- Foster Brook
- Foster Corner
- Fosters Corner
- Fosters Mills
- Foster, Township of
- Foster, Township of
- Foster, Township of
- Fostoria
- Foundryville
- Foundryville (historical)
- Fountain
- Fountain
- Fountain Dale
- Fountain Hill
- Fountain Hill, Borough of
- Fountain House Corners
- Fountain Springs
- Fountainville
- Four Corners
- Four Points
- Fousetown
- Foustown
- Foustwell
- Fowler Heights
- Fowlersville
- Foxburg
- Foxburg
- Foxburg
- Foxburg, Borough of
- Fox Chapel
- Fox Chase
- Fox Chase
- Foxcroft
- Fox Hill
- Fox Hill
- Fox Hill
- Fox Ridge
- Fox Ridge Court (subdivision)
- Fox Run
- Fox Run
- Foxton
- Foxtown
- Foxtown Hill
- Fox, Township of
- Fox, Township of