County · Central Missouri / Missouri River Corridor

Osage County

Short answer

A small, rural Missouri River-corridor county defined by nineteenth-century German Catholic settlement — Westphalia, Loose Creek, and the seat at Linn — and by water: the Osage River along its southern edge, the Gasconade and Maries rivers, and Painted Rock Conservation Area on the Osage bluffs.

All counties All local notes

Towns, cities & local places in Osage County

ChamoisLinnLoose CreekPainted Rock Conservation AreaWestphalia

Region: Central Missouri / Missouri River Corridor
Local notes: 7
Notes nearby: 6
Nearby counties: 6

Property tax snapshot

Missouri has no single county rate. A bill is the sum of every taxing district on the parcel — county, school, city, fire, library, ambulance — and the school levy varies most within a county.

Estimate a bill Look up the exact rate

Practical guides

Common county next steps in Osage County

Use these when the local office, parcel, vehicle, or deadline matters.

Property tax estimator Estimate a real-property bill, then confirm the exact parcel value and levy locally. Personal property tax guide Sort January 1 vehicle ownership, paid receipts, and statements of non-assessment. Vehicle title checklist Plan the license-office trip around title timing, inspections, emissions, and receipts. Assessment appeal guide If a value looks wrong, start with the county deadline and evidence about market value.

Local notes

Local rules and costs to check in Osage County

Short notes on the taxes, paperwork, and local-government layers here — grouped by topic, each linking the official sources behind it.

River-corridor property can sit in mapped floodplains Land along the Osage, Gasconade, and Missouri rivers can fall in mapped floodplains, which affects insurance, building, and road access, so buyers should check official flood maps for a specific parcel

Local notes

Worth knowing in Osage County

History, rivers, lakes, and quirks that give the county some shape.

A rural county of small towns, villages, and special districts In Osage County, services and taxes are split across the county, a few small towns, communities without their own town hall, and special districts for schools, fire, ambulance, and roads — so the group serving and taxing your address may not be the county. Painted Rock Conservation Area overlooks the Osage River bluffs Painted Rock Conservation Area is a Missouri Department of Conservation area on the Osage River bluffs in Osage County, with a hiking trail and river overlooks; check the MDC area page for trails, parking, and rules. Why the county seat sits at Linn Understanding how Osage County was formed and why Linn became the seat explains where the courthouse and county offices sit and where residents go for county business. Three rivers — the Osage, Gasconade, and Maries — shape the county's edges Osage County is bounded and crossed by several rivers — the Osage, Gasconade, and Maries — that offer floating and fishing through public conservation accesses, which are the official way to get on the water Rural property here usually means a private well and septic Outside the small towns, most of Osage County is rural, where homes rely on private wells and onsite septic systems that come with their own state rules and maintenance responsibilities. Westphalia and Loose Creek anchor a German Catholic settlement story The county's place names, churches, and culture trace to nineteenth-century German Catholic immigrants who settled communities like Westphalia and Loose Creek, and that heritage is best understood through official historical sources rather than local lore

Official sources

Where to confirm it

A short set of official county and agency pages cited here. The other 11 source links stay with their individual notes.

Missouri SEMA — Osage County communities and county seat (Linn) Missouri DOR — Osage County school districts (R-I Chamois, R-II Linn, R-III Westphalia) Missouri Official Manual (Blue Book) — Classification of Municipalities MDC - Painted Rock Conservation Area Missouri Secretary of State dps.mo.gov Missouri State Archives State Historical Society of Missouri FEMA Flood Map Service Center

Worth knowing nearby

Notes from the counties closest to Osage County

Source-checked notes from the nearest counties — the local layer often carries across the county line.

The assessor and collector are separate Gasconade County offices Gasconade County · Gasconade County lists separate assessor and collector offices, and the collector says taxes are collected from the assessor's records. Clifty Creek hides a natural bridge in Maries County Maries County · Clifty Creek Conservation Area gives Maries County a rugged natural-bridge hike, with a hand-built loop trail and a dolomite arch over a creek tributary. Carnahan Memorial Gardens softens the Capitol edge Cole County · Carnahan Memorial Gardens gives Jefferson City a public garden between the Capitol complex and the Governor's Mansion. Auto World gives Fulton a car-history stop beside the college-town story Callaway County · Auto World Museum in Fulton adds a transportation-history layer to Callaway County, with more than 80 vehicles displayed in historic settings. The Grand Auglaize Bridge carries Miller County's swinging-bridge story Miller County · The Grand Auglaize Bridge near Brumley is a National Register-listed Miller County bridge tied to the county's creek valleys and older rural crossings. The assessor values, the collector bills, and the levy varies Montgomery County · Owners who get a higher value notice need to know that in Montgomery County the assessor sets value while the collector bills, and that overlapping districts, not one office, drive the total owed.

Nearby counties

Closest counties to Osage County

Nearby counties with their own local notes.

Gasconade County Unusually rich for its small size: Hermann and the Missouri Rhineland German wine heritage anchor a deep history-and-culture cluster (Deutschheim State Historic Site, the river-town identity), while the Missouri River, the Katy Trail, and the Gasconade River drive outdoors and floodplain topics. Maries County A small, rural Ozark county where much county business still runs through the courthouse rather than the web, organized around Vienna as the county seat and two float-worthy waterways, the Maries and Gasconade rivers, plus Spring Creek. Cole County The seat of state government: Jefferson City brings the Capitol, large tax-exempt state holdings, and a decommissioned penitentiary; the Missouri River sets flood limits and connects to the Katy Trail; karst and no emissions round out a central-Missouri profile. Callaway County A Missouri River corridor county anchored by Fulton, where the National Churchill Museum and Westminster College preserve the 'Iron Curtain' speech, the Ameren-operated Callaway nuclear plant sits near the river, and the 'Kingdom of Callaway' folklore gives the place a distinct identity. Miller County Miller County splits between a small river-town seat at Tuscumbia on the Osage and the busy eastern Lake of the Ozarks at Bagnell Dam and the city of Lake Ozark, with Eldon as the inland highway-and-rail town. Montgomery County A small I-70 county in the Missouri River corridor between Warren and Callaway, with Montgomery City as its seat and the river bottoms and Loutre Island forming its southern edge.

Reviewed June 18, 2026. These notes are a starting point — confirm exact parcel, license, tax, or permit details with the Osage County office that controls each record.

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