Places beginning with PA in Illinois, United States
- Pacific Junction (subdivision)
- Packingtown (subdivision)
- Paderborn
- Padua
- Paineville
- Paisley Corners
- Palatine
- Palatine, Township of
- Palermo
- Palestine
- Palestine Election Precinct
- Palestine, Township of
- Palisades
- Palm Beach
- Palmer
- Palmerton
- Palm Garden Mobile Home Park
- Palmyra
- Palmyra
- Palmyra, Township of
- Paloma
- Palos Heights
- Palos Hills
- Palos Park
- Palos, Township of
- Palzo
- Pana
- Panama
- Pana, Township of
- Pankeyville
- Panola
- Panola, Township of
- Panorama Hills
- Panorama Valley (subdivision)
- Panther Creek, Township of
- Papineau
- Papineau, Township of
- Paradise
- Paradise, Township of
- Paris
- Paris, Township of
- Park City
- Parker
- Parkersburg
- Parker, Township of
- Park Estates Mobile Home Park (subdivision)
- Park Forest
- Park Hill (subdivision)
- Parkland
- Park Manor (subdivision)
- Park Ridge
- Park Row (subdivision)
- Parkside (subdivision)
- Parkview (subdivision)
- Parkville
- Parnell
- Parrish
- Partridge, Township of
- Pasfield
- Passport
- Patoka
- Patoka, Township of
- Patterson
- Patterson Springs
- Patterson, Township of
- Patton
- Patton
- Pattonsburg
- Patton, Township of
- Pauline
- Paulton
- Pavillion
- Pawnee
- Pawnee Junction
- Pawnee, Township of
- Paw Paw
- Paw Paw, Township of
- Paxton
- Paynes Point
- Payson
- Payson, Township of
- Paytonville