County · St. Louis Region

Warren County

An I-70 exurban county on the western edge of the St.

Use this as a checklist, not a final ruling

These notes explain what's worth a second look in Warren County — local quirks, taxes, paperwork, and places. Always confirm exact parcel, license, tax, or permit details with the office that controls the record.

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

What's worth knowing in Warren County

Short, source-checked notes tied to this county. Each links to the official sources behind it.

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. 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 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. 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 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 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. 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 The assessor values, the collector bills, and the levy varies As St. Louis exurban growth pushes into Warren County, owners seeing rising notices need to know the assessor sets value while the collector bills, and that overlapping districts drive the total. Daniel Boone's last years were spent near Marthasville Daniel Boone spent his final years in the Femme Osage and Missouri River country and was originally buried near Marthasville, where a monument area marks the original grave site, anchoring the county's frontier history The southern tier drops into the Missouri River floodplain Warren County's southern edge meets the Missouri River bottoms near Marthasville and Dutzow, so flood-zone status is a real buying question there even though the uplands around Warrenton are dry. Dutzow and the Missouri Rhineland wine settlements Dutzow and Marthasville are part of the Missouri Rhineland, the German immigrant wine country along the Missouri River, which explains the area's place names, churches, vineyards, and identity. 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. Warrenton is the I-70 seat where exurban growth lands first Warrenton and Wright City sit directly on I-70, so they absorb much of the county's commuter and exurban growth, which shapes city services, permits, and which government a resident actually deals with

Official sources

Where to confirm it

The official county and agency pages cited by this county's 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 Warren County Assessor Warren County Recorder Warren County directory Warren County Collector Missouri Department of Revenue: Renewing Missouri license plates Katy Trail State Park — Missouri State Parks Marthasville Trailhead — Missouri State Parks Dutzow Trailhead — Missouri State Parks Missouri State Tax Commission Missouri State Tax Commission Missouri State Tax Commission Missouri State Tax Commission historicmissourians.shsmo.org FEMA Flood Map Service Center warrencountymo.org State Historical Society of Missouri collections.shsmo.org collections.shsmo.org Missouri SEMA warrencountymo.org sema.dps.mo.gov Missouri Spatial Data Information Service MoDOT MoDOT ded.mo.gov

Nearby counties

More of St. Louis Region

Neighboring counties with their own local notes.

Franklin County A St. Louis exurban county on the Meramec River and Route 66: real river-flood history, karst and show caves, German river-town heritage at Washington, and a notable contrast with the inner metro because it sits outside the St. Jefferson County A St. Lincoln County A fast-growing St. Louis exurb anchored by Troy, hemmed by the Mississippi and Cuivre rivers, and shaped by floodplain, levee, and drainage questions. Its signature twist is that it sits just outside the four-jurisdiction St. St. Charles County A fast-growing suburban county inside the St. St. Louis City An independent city and county-equivalent: county-style offices are city offices, there is a 1% earnings tax, vehicles fall in the St. St. Louis County A county defined by municipal fragmentation: dozens of municipalities plus unincorporated areas, municipal occupancy inspections, separate fire and school districts, the regional sewer district, St.

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