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County · code 29145

Newton CountyMissouri

Newton County is a county in Missouri with its seat in Neosho. It was formed on December 31, 1838, from Barry County and named after John Newton.

  • Founded1838
  • County seatNeosho
  • Named forJohn Newton
  • Land area625 sq mi + 1.8 sq mi water
  • Population58,648 2020 Census
  • Parcels mapped32,246 checked 16 October 2026
Open the free map Click any parcel in Newton County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

McDonaldJasperOttawa, OKBarry Neosho Census outline · seat marked

Where it is

Newton 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 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 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 cityNewton County Newton
Counties of Missouri · Newton highlighted

History

Formed in 1838 from Barry County

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

Newton County was created from Barry County in 1838, with overlapping territory that was resolved over the following years through adjustments with Barry, Lawrence, Jasper, and other counties. In 1847, Newton County lost territory to the creation of Seneca, which was later renamed McDonald County and fully organized in 1849.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

  1. 1838
    Newton County created Newton created from Barry; Portion of Barry and Newton overlapped until 28 March 1845. Non-County Area 30 created from Barry, attached to Newton "for civil and military purposes."
    from Barry
    · Mo. Laws 1838-1839, pub., pp. 19-20
  2. 1841
    Lost territory Newton lost to Non-County Area 30. · Mo. Laws 1840-1841, pub., p. 42
  3. 1841
    Lost territory Newton lost attached Non-County Area 30 to Bates and to creation of Jasper; Non-County Area 30 eliminated.
    to Batesto Jasper
    · Mo. Laws 1840-1841, pub., sec. 7/p. 33
  4. 1843
    Lost territory Overlap area assigned to both Barry and Newton lost to creation of Lawrence.
    to Barryto Lawrence
    · Mo. Laws 1842-1843, pub., p. 39
  5. 1849
    Renamed Seneca renamed McDonald and fully organized, detached from Newton. Newton lost to McDonald.
    formerly Seneca
    · Mo. Laws 1848-1849, pub., pp. 30-32
Show all 10 changes (5 more)
  1. 1838
    Newton County created Newton created from Barry; Portion of Barry and Newton overlapped until 28 March 1845. Non-County Area 30 created from Barry, attached to Newton "for civil and military purposes."
    from Barry
    · Mo. Laws 1838-1839, pub., pp. 19-20
  2. 1841
    Lost territory Newton lost to Non-County Area 30. · Mo. Laws 1840-1841, pub., p. 42
  3. 1841
    Lost territory Newton lost attached Non-County Area 30 to Bates and to creation of Jasper; Non-County Area 30 eliminated.
    to Batesto Jasper
    · Mo. Laws 1840-1841, pub., sec. 7/p. 33
  4. 1843
    Lost territory Overlap area assigned to both Barry and Newton lost to creation of Lawrence.
    to Barryto Lawrence
    · Mo. Laws 1842-1843, pub., p. 39
  5. 1845
    Changed Area of overlap between Newton and Barry assigned to Barry.
    Barry
    · Mo. Rev. Stat. 1845, secs. 29-30/p. 137
  6. 1847
    Lost territory Newton lost to creation of Seneca (now McDonald); Seneca not fully organized, attached to Newton "for all civil and military purposes."
    to Senecato McDonald
    · Mo. Laws 1846-1847, pub., p. 16
  7. 1847
    Changed Newton's eastern boundary defined (no change). · Mo. Laws 1846-1847, priv., p. 230
  8. 1847
    Lost territory Newton lost to Jasper.
    to Jasper
    · Mo. Laws 1846-1847, priv., pp. 229-230
  9. 1849
    Renamed Seneca renamed McDonald and fully organized, detached from Newton. Newton lost to McDonald.
    formerly Seneca
    · Mo. Laws 1848-1849, pub., pp. 30-32
  10. 1879
    Lost territory Newton lost to McDonald.
    to McDonald
    · Mo. Rev. Stat. 1879, pp. 1015-1044

Land and parcels

What the maps cover in Newton

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

Newton by the Census

Population
58,648 2020 Census count
Housing units
24,570 2020 Census count
Land area
625 square miles
Water area
1.8 square miles
People per sq mi
94 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

Newton 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

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Questions

Common questions about Newton County

When was Newton County founded?
Newton County was founded in 1838, formed from Barry County, and named after John Newton.
What is the county seat of Newton County?
The county seat of Newton County is Neosho.
Is there an online parcel map for Newton County?
Yes. Newton County publishes a parcel map of 32,246 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Newton County's boundary or name changed?
Newton County was created in 1838 from Barry County. Since then the Atlas of Historical County Boundaries records 8 later changes, chiefly involving McDonald County, Barry County and Jasper County. It was formerly called Seneca.
Is my lot in a flood zone?
We do not have flood maps for Newton 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