Jefferson County

Basin
Boulder
Clancy
Jefferson City
Montana City
Whitehall
HASC code :US-MT-JE
FIPS 6-4 code :30043
Capital :Boulder
Largest city :Montana City
Elevation :High : Basin 5,355 ft
Low : Montana City 4,043 ft
Population :10,049
Land Area :1,657 sq mi
(4,292 km²)
Density :6.06/sq mi
(2.34/km²)
Time zone :UTC -7
Website :http://www.co.jefferson.mt.us