Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest and crime counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. 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). A police report belongs to the agency whose officer wrote it, so which office holds a report from Jefferson County depends on where the incident happened: the Jefferson County Sheriff's Office for the unincorporated county, the agency that reports for the city inside a city. This guide names each agency, where its records page is and what the Missouri Sunshine Law requires of it.
This guide covers which agency, the sheriff's reports, the cities' reports, how many reports, what the law requires 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.
Which Agency Holds a Report from Jefferson County
A crime, incident or collision report belongs to the agency whose officer wrote it, and that agency releases it, not the court, the jail or the prosecutor.
In Jefferson County that is the Jefferson County Sheriff's Office for the unincorporated county and for any city that contracts with it for police service, and the agency that reports for a city where the city has one of its own.
The FBI's list also carries Jefferson College (campus police) and the Dunklin R-5 School District (other agency), each with a records office of its own.
The Eureka Police Department is listed by the FBI across two counties including Jefferson County, so its arrests are not broken out for Jefferson County here.
Reports from the Jefferson County Sheriff's Office
The Jefferson County Sheriff's Office is the county agency; it had 387 violent and 1,055 property crimes reported for 2025 and reported 1,731 arrests for 2025.
Its reports come from its records unit, reached through the office at 636-797-5000. The office's page SearchSystems verified is its jail page, at jeffcomo.gov/m/directory/department?did=50 (page title: Staff Directory, Sheriff), phone 636-797-5000, 400 First Street Justice Center Hillsboro, MO 63050, which answered when SearchSystems opened it on October 9, 2026.
Reports from the City Agencies in Jefferson County
The nine cities the FBI lists in Jefferson County with a reporting agency of their own, with the police records page SearchSystems verified where the city has a guide:
- Arnold: 454 arrests reported for 2023.
- Festus: 19 violent and 126 property crimes reported for 2025; 339 arrests reported for 2024. The Festus police department's page is at festusmo.gov/m/directory/department?did=11, phone 636-937-5184 (verified September 25, 2026).
- De Soto: 37 violent and 230 property crimes reported for 2025; 400 arrests reported for 2025.
- Pevely: 19 violent and 52 property crimes reported for 2025; 195 arrests reported for 2025.
- Herculaneum: 9 violent and 69 property crimes reported for 2025; 53 arrests reported for 2025. The Herculaneum police department's page is at cityofherculaneum.gov/police-department/directory, phone 636-797-9999 (verified September 26, 2026).
- Crystal City: 6 violent and 21 property crimes reported for 2025; 83 arrests reported for 2022.
- Hillsboro: 17 violent and 32 property crimes reported for 2025; 56 arrests reported for 2025.
- Byrnes Mill: 5 violent and 14 property crimes reported for 2025; 141 arrests reported for 2025.
- Kimmswick: 0 arrests reported for 2024.
A city on that list is reported separately whether the officers are the city's own or the sheriff's under contract; the FBI's list does not say which.
How Many Reports: Jefferson County in 2025
The eight agencies in Jefferson County with all twelve months of 2025 on file reported 499 violent and 1,599 property crimes to the FBI that year, each one a report taken by the agency that holds it.
Together, the six agencies in Jefferson County with all twelve months of 2025 on file reported 2,576 arrests to the FBI that year, and each arrest is a report of its own.
What the Missouri Sunshine Law Requires
Under the Missouri Sunshine Law the agency must answer a request within 3 business days, and it may charge research time and copying. The request goes to the agency that holds the report, in writing, and does not have to say why the report is wanted.
Any other county record goes through the county records request page SearchSystems verified, at jeffcomo.gov/719/Public-Records-Requests (page title: Public Records Requests | Jefferson County, MO).
A defendant who has been charged gets the report through the case: the Prosecuting Attorney, 636-797-5321, handles discovery for pending cases.
Frequently Asked Questions
How do I get a police report in Jefferson County?
From the agency whose officer took it: the Jefferson County Sheriff's Office for its own arrests, or the agency that reports for the city where it happened. Under the Missouri Sunshine Law the answer is due within 3 business days.
How long does an agency in Jefferson County have to answer?
Under the Missouri Sunshine Law, within 3 business days. It may charge research time and copying.
How do I get a report from the Jefferson County Sheriff's Office?
From its records unit, reached through the office at 636-797-5000. Under the Missouri Sunshine Law the answer is due within 3 business days.
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.