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County · code 29083

Henry CountyMissouri

Henry County is a county in Missouri with its seat in Clinton, formed in 1834.

  • Founded1834
  • County seatClinton
  • Named forPatrick Henry
  • Land area697 sq mi + 35 sq mi water
  • Population21,946 2020 Census
  • Parcels mapped16,571 checked 14 October 2026
Open the free map Click any parcel in Henry County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

St. ClairJohnsonBentonBatesPettisCass Clinton Census outline · seat marked

Where it is

Henry 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 CountyClinton CountyCole CountyCooper CountyCrawford CountyDade CountyDallas CountyDaviess CountyDeKalb CountyDent CountyDouglas CountyDunklin CountyFranklin CountyGasconade CountyGentry CountyGreene CountyGrundy CountyHarrison 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 cityHenry County Henry
Counties of Missouri · Henry highlighted

History

Formed in 1834 from Lafayette County

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

Created in 1834 from Lafayette County, it was originally named Rives and then renamed Henry in 1841. The county was named after Patrick Henry.

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

  1. 1834
    Henry County created Rives (now Henry) created from Lafayette and a small portion of Non-County Area 16.
    from Lafayette
    · Mo. Laws 1834-1835, priv. and loc., pp. 37-38
  2. 1835
    Changed St. Clair detached from Greene, attached to Rives (now Henry) "for all civil and military purposes."
    St. ClairGreene
    · Mo. Laws 1834-1835, priv. and loc., p. 47
  3. 1841
    Renamed Rives renamed Henry.
    formerly Rives
    · Mo. Laws 1840-1841, pub., pp. 40-41
  4. 1859
    Lost territory Henry lost to St. Clair.
    to St. Clair
    · Mo. Laws 1858-1859, p. 425

Land and parcels

What the maps cover in Henry

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

Henry by the Census

Population
21,946 2020 Census count
Housing units
10,693 2020 Census count
Land area
697 square miles
Water area
35 square miles
People per sq mi
31 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.

Records

County government

See your own lot on these maps

Open Henry 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 Henry County

When was Henry County founded?
Henry County was founded in 1834, formed from Lafayette County, and named after Patrick Henry.
What is the county seat of Henry County?
The county seat of Henry County is Clinton.
Is there an online parcel map for Henry County?
Yes. Henry County publishes a parcel map of 16,571 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Henry County's boundary or name changed?
Henry County was created in 1834 from Lafayette County. Since then the Atlas of Historical County Boundaries records 3 later changes, chiefly involving St. Clair County, Greene County and Rives County. It was formerly called Rives.
Is my lot in a flood zone?
We do not have flood maps for Henry 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