- Nunda
- Naples
- New Holland
- Newell
- Northville
- New Effington
- New Underwood
- Nisland
- North Eagle Butte
- North Sioux City
- North Spearfish
- Nahant
- Nahon
- Naomi
- Napa Junction
- Nemo
- Newark
- Newdale Colony
- Newport Colony
- Nihart
- Nora
- Norbeck
- Norfeld Colony
- Norris
- North Grove Addition
- North Shore
- Northshore Development
- Norton Acres
- Norway Center
- Novak