Colby, Kansas

Colby, Kansas
Thomas County Courthouse (2014)
Location within Thomas County and Kansas
KDOT map of Thomas County (legend)
Coordinates: 39°23′05″N 101°02′43″W / 39.38472°N 101.04528°W / 39.38472; -101.04528
CountryUnited States
StateKansas
CountyThomas
Founded1885
Incorporated1886
Named afterJ.R. Colby
Area
 • Total
3.58 sq mi (9.27 km2)
 • Land3.58 sq mi (9.27 km2)
 • Water0 sq mi (0.00 km2)
Elevation
3,166 ft (965 m)
Population
 (2020)
 • Total
5,570
 • Density1,560/sq mi (601/km2)
Time zoneUTC-6 (CST)
 • Summer (DST)UTC-5 (CDT)
ZIP code
67701
Area code785
FIPS code20-14650
GNIS ID485557
Websitecityofcolbyks.gov

Colby is a city in and the county seat of Thomas County, Kansas, United States. As of the 2020 census, the population of the city was 5,570.