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County · code 29011

Barton CountyMissouri

Barton County is a county in Missouri with its seat in Lamar. It was created on December 12, 1855, from Jasper County and named after David Barton.

  • Founded1855
  • County seatLamar
  • Named forDavid Barton
  • Land area592 sq mi + 4.7 sq mi water
  • Population11,637 2020 Census
  • Parcels mapped8,535 checked 14 October 2026
Open the free map Click any parcel in Barton County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

JasperVernonDadeCrawford, KSCedar Lamar Census outline · seat marked

Where it is

Barton 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 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 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 cityBarton County Barton
Counties of Missouri · Barton highlighted

History

Formed in 1855 from Jasper County

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

Barton County was created from Jasper County in 1855.

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

  1. 1855
    Barton County created Barton created from Jasper.
    from Jasper
    · Mo. Laws 1855, adj. sess., loc. and priv., pp. 49-50

Land and parcels

What the maps cover in Barton

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

Barton by the Census

Population
11,637 2020 Census count
Housing units
5,290 2020 Census count
Land area
592 square miles
Water area
4.7 square miles
People per sq mi
20 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

Barton 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 Barton 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 Barton County

When was Barton County founded?
Barton County was founded in 1855, formed from Jasper County, and named after David Barton.
What is the county seat of Barton County?
The county seat of Barton County is Lamar.
Is there an online parcel map for Barton County?
Yes. Barton County publishes a parcel map of 8,535 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Barton County's boundary or name changed?
Barton County was created in 1855 from Jasper County. The Atlas of Historical County Boundaries records no boundary change since.
Is my lot in a flood zone?
We do not have flood maps for Barton 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