Parcel Chartplaces Open the free map

County · code 29015

Benton CountyMissouri

Benton County is a county in Missouri with its seat in Warsaw, formed in 1835. It was created from St. Clair County and named after Thomas Hart Benton.

  • Founded1835
  • County seatWarsaw
  • Named forThomas Hart Benton
  • Land area704 sq mi + 49 sq mi water
  • Population19,394 2020 Census
  • Parcels mapped32,453 checked 14 October 2026
Open the free map Click any parcel in Benton County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

HickoryMorganPettisHenrySt. ClairCamden Warsaw Census outline · seat marked

Where it is

Benton 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 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 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 cityBenton County Benton
Counties of Missouri · Benton highlighted

History

Formed in 1835 from St. Clair County

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

Benton County was created on January 3, 1835, from St. Clair County, Non-County Area 16, and Non-County Area 20. Over the following decades, the county lost territory to the creation of several new counties: Hickory in 1845, Pettis in 1845, and through transfers to Kinderhook (now Camden) in 1841 and St. Clair in 1879.

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

  1. 1835
    Benton County created Benton created from St. Clair, Non-County Area 16, and Non-County Area 20. Non-County Area 20 eliminated.
    from St. Clair
    · Mo. Laws 1834-1835, priv. and loc., pp. 41-42
  2. 1835
    Changed Non-County Area 16 detached from Crawford, attached to Benton "for all civil and military purposes."
    Crawford
    · Mo. Laws 1834-1835, priv. and loc., p. 47
  3. 1841
    Lost territory Benton lost attached Non-County Area 16 to creation of Kinderhook (now Camden); Non-County Area 16 eliminated.
    to Kinderhookto Camden
    · Mo. Laws 1840-1841, pub., sec. 28/pp. 35-36
  4. 1845
    Lost territory Benton lost to creation of Hickory.
    to Hickory
    · Mo. Laws 1844-1845, secs. 16-18/pp. 32-33
  5. 1845
    Lost territory Benton lost to Pettis.
    to Pettis
    · Mo. Laws 1844-1845, loc. and priv., p. 42
  6. 1879
    Lost territory Benton lost to St. Clair (the area gained by St. Clair was incorrectly included as part of Benton in the state's Revised Statutes until 1939).
    to St. Clair
    · Mo. Laws 1889, p. 66; Mo. Laws 1939, pp. 635-636, 653-654; Mo. Vernon's 1949, pp. 13-14

Land and parcels

What the maps cover in Benton

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

Benton by the Census

Population
19,394 2020 Census count
Housing units
13,551 2020 Census count
Land area
704 square miles
Water area
49 square miles
People per sq mi
28 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

Benton County's official site

We have found the county's site but not its offices yet; start there.

County government

See your own lot on these maps

Open Benton 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.

Open the free map no sign-in Pro early access

Questions

Common questions about Benton County

When was Benton County founded?
Benton County was founded in 1835, formed from St. Clair County, and named after Thomas Hart Benton.
What is the county seat of Benton County?
The county seat of Benton County is Warsaw.
Is there an online parcel map for Benton County?
Yes. Benton County publishes a parcel map of 32,453 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Benton County's boundary or name changed?
Benton County was created in 1835 from St. Clair County. Since then the Atlas of Historical County Boundaries records 5 later changes, chiefly involving Camden County, Crawford County and Hickory County.
Is my lot in a flood zone?
We do not have flood maps for Benton 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