- Muleshoe
- Mullin
- Mumford
- Munday
- Murchison
- Myra
- Nacogdoches
- Nada
- Naples
- Nash
- Natalia
- Navasota
- Nazareth
- Neches
- Nederland
- Needville
- Nemo
- Nevada
- New Baden
- New Boston
- New Braunfels
- New Caney
- New Deal
- New Home
- New London
- New Summerfield
- New Ulm
- New Waverly
- Newark
- Newcastle
- Newton
- Nixon
- Nocona
- Nolan
- Nolanville
- Nome
- Nordheim
- Normangee
- Normanna
- North Houston
- North Richland Hills
- North Zulch
- Norton
- Notrees
- Novice
- Nursery
- O Brien
- Oakhurst
- Oakland
- Oakville
- Oakwood
- Odell
- Odem
- Odessa
- Odonnell
- Oglesby
- Oilton
- Oklaunion
- Old Glory
- Old Ocean
- Olden
- Olmito
- Olney
- Olton
- Omaha
- Onalaska
- Orange
- Orange Grove
- Orangefield
- Orchard
- Ore City
- Orla
- Ottine
- Ovalo
- Overton
- Ozona
- Paducah
- Paige
- Paint Rock
- Palacios
- Palestine
- Palmer
- Palo Pinto
- Paluxy
- Pampa
- Pandora
- Panhandle
- Panna Maria
- Panola
- Paradise
- Paris
- Pasadena
- Pattison
- Pattonville
- Pawnee
- Pearland
- Pearsall
- Peaster
- Pecan Gap
- Pecos
- Peggy
- Pendleton
- Penelope
- Penitas
- Pennington
- Penwell
- Pep
- Perrin
- Perryton
- Petersburg
- Petrolia
- Pettus
- Petty
- Pflugerville
- Pharr
- Pickton
- Pierce
- Pilot Point
- Pinehurst
- Pineland
- Pipe Creek
- Pittsburg
- Placedo
- Plains
- Plainview
- Plano
- Plantersville
- Pleasanton
- Pledger
- Plum
- Point
- Point Comfort
- Pointblank
- Pollok
- Ponder
- Pontotoc
- Poolville
- Port Aransas
- Port Arthur
- Port Bolivar
- Port Isabel
- Port Lavaca
- Port Mansfield
- Port Neches
- Port O Connor
- Porter
- Portland
- Post
- Poteet
- Poth