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County · code 29125

Maries CountyMissouri

Maries County is a county in Missouri, with its seat in Vienna. It was created on March 2, 1855, from Osage County.

  • Founded1855
  • County seatVienna
  • Named forMaries River
  • Land area527 sq mi + 3 sq mi water
  • Population8,432 2020 Census
  • Parcels mapped8,541 checked 14 October 2026
Open the free map Click any parcel in Maries County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

OsagePhelpsPulaskiMiller Vienna Census outline · seat marked

Where it is

Maries 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 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 cityMaries County Maries
Counties of Missouri · Maries highlighted

History

Formed in 1855 from Osage County

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

Maries County was created from Osage County and named after the Maries River. The county lost territory to the creation of Phelps County in 1857 and exchanged land with Phelps County in 1859 and 1868.

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

  1. 1855
    Maries County created Maries created from Osage.
    from Osage
    · Mo. Laws 1854-1855, pub., pp. 13-15
  2. 1857
    Lost territory Maries lost to creation of Phelps.
    to Phelps
    · Mo. Laws 1857, adj. sess., loc., pp. 397-398
  3. 1859
    Exchanged territory Maries exchanged with Phelps.
    with Phelps
    · Mo. Laws 1858-1859, pp. 371-372
  4. 1868
    Lost territory Maries lost to Phelps.
    to Phelps
    · Mo. Laws 1868, adj. sess., gen., pp. 23-24
  5. 1881
    Boundary clarified Maries's boundaries clarified (no change).
    no change
    · Mo. Laws 1881, p. 93

Land and parcels

What the maps cover in Maries

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

Maries by the Census

Population
8,432 2020 Census count
Housing units
4,263 2020 Census count
Land area
527 square miles
Water area
3 square miles
People per sq mi
16 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 Maries 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 Maries County

When was Maries County founded?
Maries County was founded in 1855, formed from Osage County, and named after Maries River.
What is the county seat of Maries County?
The county seat of Maries County is Vienna.
Is there an online parcel map for Maries County?
Yes. Maries County publishes a parcel map of 8,541 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Maries County's boundary or name changed?
Maries County was created in 1855 from Osage County. Since then the Atlas of Historical County Boundaries records 3 later changes, chiefly involving Phelps County.
Is my lot in a flood zone?
We do not have flood maps for Maries 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