Jones County

Anamosa
Martelle
Monticello
Olin
Onslow
Oxford Junction
Wyoming
HASC code :US-IA-JN
FIPS 6-4 code :19105
Capital :Anamosa
Largest city :Anamosa
Elevation :High : Onslow 916 ft
Low : Oxford Junction 730 ft
Population :20,221
Land Area :575 sq mi
(1,489 km²)
Density :35.17/sq mi
(13.58/km²)
Time zone :UTC -6
Website :http://www.co.jones.ia.us