IA · 99 counties
Iowa time zone map
99 in Central Time. The sample puts every county on a single clock.
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Click a county to see its zone and the current local time.
Zone breakdown
Central Time CT · 99
IANA names in this clock: America/Chicago.
- Adair County
- Adams County
- Allamakee County
- Appanoose County
- Audubon County
- Benton County
- Black Hawk County
- Boone County
- Bremer County
- Buchanan County
- Buena Vista County
- Butler County
- Calhoun County
- Carroll County
- Cass County
- Cedar County
- Cerro Gordo County
- Cherokee County
- Chickasaw County
- Clarke County
- Clay County
- Clayton County
- Clinton County
- Crawford County
- Dallas County
- Davis County
- Decatur County
- Delaware County
- Des Moines County
- Dickinson County
- Dubuque County
- Emmet County
- Fayette County
- Floyd County
- Franklin County
- Fremont County
- Greene County
- Grundy County
- Guthrie County
- Hamilton County
- Hancock County
- Hardin County
- Harrison County
- Henry County
- Howard County
- Humboldt County
- Ida County
- Iowa County
- Jackson County
- Jasper County
- Jefferson County
- Johnson County
- Jones County
- Keokuk County
- Kossuth County
- Lee County
- Linn County
- Louisa County
- Lucas County
- Lyon County
- Madison County
- Mahaska County
- Marion County
- Marshall County
- Mills County
- Mitchell County
- Monona County
- Monroe County
- Montgomery County
- Muscatine County
- O'Brien County
- Osceola County
- Page County
- Palo Alto County
- Plymouth County
- Pocahontas County
- Polk County
- Pottawattamie County
- Poweshiek County
- Ringgold County
- Sac County
- Scott County
- Shelby County
- Sioux County
- Story County
- Tama County
- Taylor County
- Union County
- Van Buren County
- Wapello County
- Warren County
- Washington County
- Wayne County
- Webster County
- Winnebago County
- Winneshiek County
- Woodbury County
- Worth County
- Wright County
Neighboring states
Questions
What time zone is Iowa in?
Iowa is entirely in Central Time. All 99 counties in this outline use that clock.
Which Iowa counties are split between time zones?
No Iowa county came back with two different clocks in the sample. A city on the legal line can still differ from its county.
Does Iowa observe daylight saving time?
Iowa observes daylight saving time on the federal schedule: the second Sunday in March until the first Sunday in November.
Estimates only
County colors come from an interior sample of Census outlines against timezone-boundary-builder. 49 CFR Part 71 is the legal description, including towns that sit on the line.