Home » Lincoln / Sanders / Mineral Featured County Lincoln / Sanders / Mineral Population: 505 (2021) Elevation: 3,055′ Average Income: $53,250 (2021) Alberton Population: 1,433 (2021) Elevation: 2,582' Average Income: $38,388 (2021) Eureka Population: 2,903 (2021) Elevation: 2,096' Average Income: $39,044 (2021) Libby Population: 1,157 (2021) Elevation: 2,471' Average Income: $24,844 (2021) Plains Population: 207 (2020) Elevation: 2,536' Average Income: $42,604 (2021) St. Regis Population: 884 (2021) Elevation: 2,720' Average Income: $42,734 (2021) Superior Population: 1,391 (2021) Elevation: 2,556' Average Income: $42,857 (2021) Thompson Falls Population: 855 (2020) Elevation: 3,117' Average Income: $42,468 (2021) Trego Population: 833 (2021) Elevation: 1,800' Average Income: $25,882 (2021) Troy Lincoln County Sanders County Mineral County