- Patmos
- Patosi
- Patrick
- Patterson
- Pattison
- Paul
- Paulding
- Paulette
- Paynes
- Peach Tree Island
- Pearl
- Pearl
- Pearl Hill
- Pearl River
- Pearlington
- Pearson
- Pecan
- Pecan Grove
- Pecan Grove Mobile Home Park
- Pecan Ridge Mobile Home Park
- Peelers
- Pelahatchie
- Pelican Key
- Pelican Mobile Home Park
- Pellez
- Penantly
- Pendorff
- Penns
- Pentecost
- Penton