- Adams
(18 historic properties)
- Antelope
(11 historic properties)
- Arthur
(2 historic properties)
- Banner
(1 historic property)
- Boone
(5 historic properties)
- Box Butte
(4 historic properties)
- Boyd
(6 historic properties)
- Brown
(1 historic property)
- Buffalo
(17 historic properties)
- Burt
(11 historic properties)
- Butler
(12 historic properties)
- Cass
(24 historic properties)
- Cedar
(13 historic properties)
- Chase
(6 historic properties)
- Cherry
(12 historic properties)
- Cheyenne
(13 historic properties)
- Clay
(7 historic properties)
- Colfax
(11 historic properties)
- Cuming
(3 historic properties)
- Custer
(13 historic properties)
- Dakota
(5 historic properties)
- Dawes
(15 historic properties)
- Dawson
(8 historic properties)
- Deuel
(4 historic properties)
- Dixon
(5 historic properties)
- Dodge
(21 historic properties)
- Douglas
(151 historic properties)
- Dundy
(1 historic property)
- Fillmore
(18 historic properties)
- Franklin
(7 historic properties)
- Frontier
(2 historic properties)
- Furnas
(2 historic properties)
- Gage
(28 historic properties)
- Garden
(6 historic properties)
- Garfield
(4 historic properties)
- Gosper
(1 historic property)
- Grant
(1 historic property)
- Greeley
(6 historic properties)
- Hall
(21 historic properties)
- Hamilton
(5 historic properties)
- Harlan
(3 historic properties)
- Hayes
(3 historic properties)
- Hitchcock
(4 historic properties)
- Holt
(7 historic properties)
- Hooker
(3 historic properties)