Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. Every office link was opened and checked against the office's own site between September 23, 2026 and October 9, 2026.
Jefferson County, Missouri, has about 232,000 residents (2024 Census Bureau estimate). The title to a parcel in Jefferson County is in the deed records of the Recorder of Deeds and its taxable value is set by the County Assessor; what is built on it is a matter for the city or the county. This guide says who keeps each record and where the page for each office is.
This guide covers deeds, assessed values, directory links, city permits, evictions and court cases, records requests and common questions.
Related guides: Jefferson County public records, Jefferson County arrest records, Jefferson County warrants, Jefferson County inmate search, Jefferson County criminal records, Missouri arrest records and Missouri inmate search.
Deeds, Mortgages and Liens in Jefferson County
Deeds, mortgages, liens and easements that affect title to land in Jefferson County are recorded by the Recorder of Deeds, which indexes them by name and sells copies.
SearchSystems opened and checked the Recorder of Deeds' page at jeffcomo.gov/QuickLinks.aspx?CID=48 (page title: Quick Links, Recorder of Deeds), which answered when SearchSystems opened it on September 23, 2026.
Assessed Values and the Tax Roll in Jefferson County
The County Assessor sets the value each parcel in Jefferson County is taxed on and keeps the parcel maps. Missouri reassesses property in odd-numbered years and assesses homes at 19 percent of market value.
SearchSystems opened and checked the County Assessor's page at jeffersonmo-assessor.devnetwedge.com (page title: Jefferson County Property Tax Inquiry), which answered when SearchSystems opened it on September 23, 2026.
More Official Property and Land Records Pages for Jefferson County
The SearchSystems directory, online since 1997, lists the official pages for Jefferson County and Missouri. These property pages from its Jefferson County listing were opened again on October 2, 2026 and each one still answers:
- Property Viewer Jefferson County Missouri (arcgis.com)
Permits and City Records in the Cities of Jefferson County
Building permits, zoning and code cases inside a city are the city's own records. The cities in Jefferson County with a SearchSystems guide to their offices, with the city page SearchSystems verified:
- Arnold: the city hall page SearchSystems verified is at arnoldmo.org (verified September 25, 2026).
- Festus: the city hall page SearchSystems verified is at festusmo.gov, phone 636-937-4694 (verified September 25, 2026).
- Herculaneum: the city hall page SearchSystems verified is at cityofherculaneum.gov/contact, phone 636-475-4447 (verified September 26, 2026).
Evictions and Court Cases About Land in Jefferson County
An eviction, a foreclosure, a lien dispute or a quiet title suit is a court case in the Jefferson County Circuit Court, and the file is public unless sealed.
The court records page SearchSystems verified for the county is at jeffcomo.gov/670/Circuit-Court, phone (636) 797-6069.
Asking a County Office for a Record
Under the Missouri Sunshine Law a county office must answer a request within 3 business days, and it may charge research time and copying. The county records request page SearchSystems verified is at jeffcomo.gov/719/Public-Records-Requests (page title: Public Records Requests | Jefferson County, MO).
Frequently Asked Questions
Who records deeds in Jefferson County?
The Recorder of Deeds, at jeffcomo.gov/QuickLinks.aspx?CID=48. Deeds, mortgages and liens on land in Jefferson County are filed there, and the County Assessor (jeffersonmo-assessor.devnetwedge.com) has the assessment records.
Who sets the assessed value of a property in Jefferson County?
The County Assessor, whose page SearchSystems verified is at jeffersonmo-assessor.devnetwedge.com.
Where are evictions from Jefferson County filed?
In the Jefferson County Circuit Court. The file is public unless the court seals it.
How is property assessed in Missouri?
Missouri reassesses property in odd-numbered years and assesses homes at 19 percent of market value.
Is this the official Jefferson County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.