County · St. Louis Region
Warren County
Short answer
An I-70 exurban county west of St. Louis, with Missouri River bottoms, Katy Trail towns, wine-country history, growth around Warrenton, and floodplain and road questions.
Towns, cities & local places in Warren County
Daniel Boone MonumentDutzowKaty TrailMarthasvillePendletonWarrentonWright City
- Region
- St. Louis Region
- Local notes
- 17
- 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.
Practical guides
Common county next steps in Warren 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 Warren County
Short notes on the taxes, paperwork, and local-government layers here — grouped by topic, each linking the official sources behind it.
Warren County parcel search is not a survey Warren County's assessor and GIS searches are useful starting points, but parcel screens do not replace deeds, surveys, or official legal advice. Warren County road questions need the road layer first Warren County's directory separates Road and Bridge from assessor, collector, recorder, and city offices, which helps route road-maintenance questions. Warren County personal property starts with the assessor Warren County vehicle and personal-property assessment questions start with the assessor, including mailed or e-filed assessment sheets. Storm and tornado readiness on the metro's western edge Warren County faces Missouri's usual severe-weather risk, and a growing exurban population means more residents who should know how local emergency management and warnings work. Warren County recording questions belong with the Recorder Warren County's Recorder of Deeds handles recording and copy questions separately from assessor and collector records. Warren County tax receipts can matter for license plates Warren County tax payments and receipts are collector work, while Missouri license-plate renewal rules come from the Department of Revenue.
Browse 2 more practical notes
Home & Property
Local notes
Worth knowing in Warren County
History, rivers, lakes, and quirks that give the county some shape.
Little Lost Creek is Warren County's rugged creek country Little Lost Creek Conservation Area brings glades, oak-hickory woods, sandstone outcrops, and a partially spring-fed stream into central Warren County. Marthasville's Depot Street keeps old commercial buildings visible Marthasville's Depot Street has National Register-listed commercial buildings that help explain the town's Katy Trail and river-corridor feel. MO 94 west of Marthasville has a rural historic district The Starke-Meinershagen-Boeke Rural Historic District marks a farmstead layer along MO 94 west of Marthasville. Reifsnider State Forest sits just south of Warrenton Reifsnider State Forest gives Warren County a wooded public-land stop close to Warrenton and I-70. The Schowengerdt House gives Warrenton a preserved home base The Schowengerdt House in Warrenton is a National Register-listed home now tied to Warren County history and local research. The Katy Trail passes through Marthasville and Dutzow The Katy Trail runs along the Missouri River through Warren County with trailheads at Marthasville and Dutzow, a mid-trail recreation asset that ties into the local wine country rather than the trail's busy eastern end
Official sources
Where to confirm it
A short set of official county and agency pages cited here. The other 25 source links stay with their individual notes.
Missouri Department of Conservation - Little Lost Creek Conservation Area Missouri State Parks - Warren County National Register Listings City of Marthasville - Local Attractions Missouri State Parks - Starke-Meinershagen-Boeke Rural Historic District Missouri Department of Conservation - Reifsnider State Forest Missouri State Parks - Schowengerdt, Ernst, House Warren County Historical Society - Schowengerdt House Warren County Assessor parcel search Warren County Integrity GIS
Worth knowing nearby
Notes from the counties closest to Warren County
Source-checked notes from the nearest counties — the local layer often carries across the county line.
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. B.K. Leach gives Lincoln County a Mississippi-bottoms wildlife map Lincoln County · B.K. Leach Memorial Conservation Area is a northeastern Lincoln County wetland and bottomland place to check for river-edge public access, hunting, fishing, and wildlife viewing. Franklin County addressing is a Planning and Zoning task Franklin County · Franklin County's addressing page says unincorporated addresses, road names, and district validation run through the county addressing authority. St. Charles County assessment appeals have a BOE step St. Charles County · A St. Charles County property value dispute must move through the Board of Equalization before the State Tax Commission path. 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. Fort Belle Fontaine puts early American St. Louis County on the river St. Louis County · Fort Belle Fontaine Park ties north St. Louis County to the Missouri River, early U.S. military presence, and county parkland.
Nearby counties
Closest counties to Warren County
Nearby counties with their own local notes.
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. Lincoln County A fast-growing St. Louis exurban county anchored by Troy, with Mississippi and Cuivre River edges, levee and floodplain questions, and a location just outside the St. Louis emissions area. Franklin County A St. Louis exurban county on the Meramec River and Route 66, with Washington's German river-town heritage, caves and karst, floodplain questions, and county-level tax paperwork. St. Charles County A fast-growing St. Louis metro county with Missouri and Mississippi River edges, older river towns, newer subdivisions, senior tax-credit questions, and vehicles inside the St. Louis emissions area. 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. St. Louis County A fragmented metro county with many municipalities, unincorporated areas, school and fire districts, MSD service, occupancy inspections, older suburbs, and vehicles inside the St. Louis emissions area.
Reviewed June 18, 2026. These notes are a starting point — confirm exact parcel, license, tax, or permit details with the Warren County office that controls each record.
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