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County · code 29049

Clinton CountyMissouri

Clinton County is a county in Missouri with its seat in Plattsburg. It was formed on January 2, 1833, from Clay County and named after DeWitt Clinton.

  • Founded1833
  • County seatPlattsburg
  • Named forDeWitt Clinton
  • Land area419 sq mi + 4.5 sq mi water
  • Population21,184 2020 Census
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Updated

DeKalbClayBuchananCaldwellRay Plattsburg Census outline · seat marked

Where it is

Clinton on the map of Missouri

Missouri has 115 counties and county equivalents, each with its own records office. Shapes with a page are links.

Adair CountyAndrew CountyAtchison CountyAudrain CountyBarry CountyBarton CountyBates CountyBenton CountyBollinger CountyBoone CountyBuchanan CountyButler CountyCaldwell CountyCallaway CountyCamden CountyCape Girardeau CountyCarroll CountyCarter CountyCass CountyCedar CountyChariton CountyChristian CountyClark CountyClay CountyCole CountyCooper CountyCrawford CountyDade CountyDallas CountyDaviess CountyDeKalb CountyDent CountyDouglas CountyDunklin CountyFranklin CountyGasconade CountyGentry CountyGreene CountyGrundy CountyHarrison CountyHenry CountyHickory CountyHolt CountyHoward CountyHowell CountyIron CountyJackson CountyJasper CountyJefferson CountyJohnson CountyKnox CountyLaclede CountyLafayette CountyLawrence CountyLewis CountyLincoln CountyLinn CountyLivingston CountyMcDonald CountyMacon CountyMadison CountyMaries CountyMarion CountyMercer CountyMiller CountyMississippi CountyMoniteau CountyMonroe CountyMontgomery CountyMorgan CountyNew Madrid CountyNewton CountyNodaway CountyOregon CountyOsage CountyOzark CountyPemiscot CountyPerry CountyPettis CountyPhelps CountyPike CountyPlatte CountyPolk CountyPulaski CountyPutnam CountyRalls CountyRandolph CountyRay CountyReynolds CountyRipley CountySt. Charles CountySt. Clair CountySte. Genevieve CountySt. Francois CountySt. Louis CountySaline CountySchuyler CountyScotland CountyScott CountyShannon CountyShelby CountyStoddard CountyStone CountySullivan CountyTaney CountyTexas CountyVernon CountyWarren CountyWashington CountyWayne CountyWebster CountyWorth CountyWright CountySt. Louis cityClinton County Clinton
Counties of Missouri · Clinton highlighted

History

Formed in 1833 from Clay County

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

Clinton County was created from Clay County on January 2, 1833, initially with attached unorganized territory. Between 1838 and 1843, the county lost parts of its attached territory to the creation of Buchanan, Platte, De Kalb, and Gentry Counties. Gentry County, created in 1841 but not fully organized, was attached to Clinton for civil and military purposes until it was fully organized and detached in 1845.

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

  1. 1833
    Clinton County created Clinton created from Non-County Area 12; remainder of Non-County Area 12 detached from Clay and attached to Clinton "for all civil, judicial, and military purposes."
    from Clay
    · Mo. Laws 1832-1833, pub., ch. 25, secs. 1, 6/pp. 47-48
  2. 1837
    Gained territory Non-County Area 12, attached to Clinton, gained from unorganized federal territory. · Mo. Laws 1836-1837, pub., p. 49; U.S. Stat., vol. 5, ch. 86[1836]/p. 34, and res. 2, p. 802
  3. 1838
    Lost territory Clinton lost part of attached Non-County Area 12 to creation of Buchanan and Platte.
    to Buchananto Platte
    · Mo. Laws 1838–1839, pub., pp. 23–25
  4. 1839
    Lost territory Clinton lost part of attached Non-County Area 12 to creation of Non-County Area 31 (Territory of Neatawah). · Mo. Laws 1838-1839, pub., pp. 21-22
  5. 1841
    Lost territory Clinton lost part of attached Non-County Area 12 to creation of Gentry; Gentry not fully organized, attached to Clinton "for all civil and military purposes."
    to Gentry
    · Mo. Laws 1840-1841, pub., p. 41
  6. 1843
    Lost territory Clinton lost attached Non-County Area 12 to creation of De Kalb; Non-County Area 12 eliminated.
    to De Kalb
    · Mo. Laws 1842–1843, pub., p. 36
  7. 1845
    Changed Gentry fully organized, detached from Clinton.
    Gentry
    · Mo. Laws 1844-1845, secs. 4-6/p. 31

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
21,184 2020 Census count
Housing units
8,934 2020 Census count
Land area
419 square miles
Water area
4.5 square miles
People per sq mi
51 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.

Zoning and code

County government

See your own lot on these maps

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Questions

Common questions about Clinton County

When was Clinton County founded?
Clinton County was founded in 1833, formed from Clay County, and named after DeWitt Clinton.
What is the county seat of Clinton County?
The county seat of Clinton County is Plattsburg.
Is there an online parcel map for Clinton County?
Not that we have found yet. Lot lines and owners of record are kept by the county assessor's office. When a public parcel map appears, it shows here.
Has Clinton County's boundary or name changed?
Clinton County was created in 1833 from Clay County. Since then the Atlas of Historical County Boundaries records 6 later changes, chiefly involving Gentry County, Buchanan County and De Kalb County.
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