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County · code 19045

Clinton CountyIowa

Clinton County is a county in Iowa with its seat in Clinton. It was created on December 21, 1837, from Dubuque County.

  • Founded1837
  • County seatClinton
  • Named forDeWitt Clinton
  • Land area695 sq mi + 15 sq mi water
  • Population46,460 2020 Census
  • Parcels mapped34,561 checked 15 October 2026
Open the free map Click any parcel in Clinton County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

ScottJacksonRock Island, ILCedarCarroll, ILWhiteside, IL Clinton Census outline · seat marked

Where it is

Clinton on the map of Iowa

Iowa has 99 counties and county equivalents, each with its own records office. Shapes with a page are links.

Adair CountyAdams CountyAllamakee CountyAppanoose CountyAudubon CountyBenton CountyBlack Hawk CountyBoone CountyBremer CountyBuchanan CountyBuena Vista CountyButler CountyCalhoun CountyCarroll CountyCass CountyCedar CountyCerro Gordo CountyCherokee CountyChickasaw CountyClarke CountyClay CountyClayton CountyCrawford CountyDallas CountyDavis CountyDecatur CountyDelaware CountyDes Moines CountyDickinson CountyDubuque CountyEmmet CountyFayette CountyFloyd CountyFranklin CountyFremont CountyGreene CountyGrundy CountyGuthrie CountyHamilton CountyHancock CountyHardin CountyHarrison CountyHenry CountyHoward CountyHumboldt CountyIda CountyIowa CountyJackson CountyJasper CountyJefferson CountyJohnson CountyJones CountyKeokuk CountyKossuth CountyLee CountyLinn CountyLouisa CountyLucas CountyLyon CountyMadison CountyMahaska CountyMarion CountyMarshall CountyMills CountyMitchell CountyMonona CountyMonroe CountyMontgomery CountyMuscatine CountyO'Brien CountyOsceola CountyPage CountyPalo Alto CountyPlymouth CountyPocahontas CountyPolk CountyPottawattamie CountyPoweshiek CountyRinggold CountySac CountyScott CountyShelby CountySioux CountyStory CountyTama CountyTaylor CountyUnion CountyVan Buren CountyWapello CountyWarren CountyWashington CountyWayne CountyWebster CountyWinnebago CountyWinneshiek CountyWoodbury CountyWorth CountyWright CountyClinton County Clinton
Counties of Iowa · Clinton highlighted

History

Formed in 1837 from Dubuque County and Scott County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Clinton County was created by Wisconsin Territory from Dubuque County and initially attached to Scott County until fully organized in 1840. When Iowa Territory was formed from Wisconsin Territory on July 3, 1838, Clinton became an Iowa Territory county, and later became an Iowa county on December 28, 1846, when the state of Iowa was created.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

  1. 1837
    Clinton County created Clinton created by Wisconsin Territory from Dubuque; Clinton not fully organized, attached to Scott "until otherwise directed by law."
    from Dubuquefrom Scott
    · Wis. Terr. Laws 1837, no. 6, secs. 12, 20/pp. 135, 137
  2. 1838
    Became part of Iowa Clinton became an Iowa Territory county when Iowa Territory was created from Wisconsin Territory. · U.S. Stat., vol. 5, ch. 96[1838]/pp. 235-241
  3. 1840
    Changed Clinton fully organized, detached from Scott.
    Scott
    · Iowa Terr. Laws 1839-1840, ch. 39, sec. 1/pp. 67-68
  4. 1846
    Became part of Iowa Clinton became an Iowa county when the state of Iowa was created from Iowa Territory. · U.S. Stat., vol. 9, ch. 1[1847]/p. 117

Land and parcels

What the maps cover in Clinton

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

Clinton by the Census

Population
46,460 2020 Census count
Housing units
21,517 2020 Census count
Land area
695 square miles
Water area
15 square miles
People per sq mi
67 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Inside a city or town, permits usually come from that city rather than the county.

Records

Permits

Zoning and code

GIS and maps

County government

See your own lot on these maps

Open Clinton County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

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Questions

Common questions about Clinton County

When was Clinton County founded?
Clinton County was founded in 1837, formed from Dubuque County and Scott County, and named after DeWitt Clinton.
What is the county seat of Clinton County?
The county seat of Clinton County is Clinton.
Is there an online parcel map for Clinton County?
Yes. Clinton County publishes a parcel map of 34,561 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Clinton County's boundary or name changed?
Clinton County was created in 1837 from Dubuque County and Scott County. Since then the Atlas of Historical County Boundaries records 3 later changes, chiefly involving Scott County.
Who issues septic and well permits in Clinton County?
The county's page on septic systems and wells: Health department: septic and well.
Is my lot in a flood zone?
We do not have flood maps for Clinton County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door