Jefferson County Property Records

Jefferson County property records are handled by the Assessor's office in Mt. Vernon, the county seat. This southern Illinois county covers a mix of small towns and farm land with around 36,550 residents. You can search Jefferson County property records online for free through the county search portal or visit the office in person. Township assessors set values on the ground, and the county assessor reviews those figures to keep things uniform. Whether you need ownership info, assessed values, or tax data on a parcel, this page shows you how to find property records in Jefferson County.

Jefferson County Assessment Office

Lee Ann Crunk serves as the Assessor for Jefferson County. Her office tracks assessed values for every parcel, processes exemption forms, and gives technical support to the township assessors who do the hands-on work. The office is at 100 S. 10th Street, Room 2, in Mt. Vernon. You can call with questions, email, or walk in during business hours to get help with Jefferson County property records.

Under 35 ILCS 200/, the county assessor must review all township values to make sure property records are correct and that assessments stay uniform across the board. Township assessors visit properties, check permits, and set the initial value for each parcel. The county office then looks at the big picture. If one township's numbers run high or low compared to the rest, adjustments get made. The Board of Review in Jefferson County hears appeals from owners who disagree with their assessed value. You can bring sales data or an appraisal to support your case.

The Jefferson County Assessor website has contact info and details on how the assessment process works in the county.

Search Jefferson County Records Online

Jefferson County offers a free online property search through the DevNet Wedge platform. You can look up any parcel by address, owner name, or Property Index Number. The PIN is the most reliable way to find a specific piece of land because it stays with the parcel no matter who buys or sells it. Most people start with an address search. The tool shows assessed values, lot size, property class, and other data from Jefferson County property records.

The Jefferson County property search portal is open to anyone at no charge. No account or login is needed. Type in what you know and the system pulls up matching parcels. Results show the fair market value, the assessed value at 33 1/3 percent under 35 ILCS 200/, and any exemptions on the parcel. You can also check the township name and class code. The search runs all day, every day, so you can look up Jefferson County property records whenever it works for you.

The Jefferson County property search at DevNet Wedge is the main online tool for parcel lookups. You can access it at jeffersonil.devnetwedge.com.

Use this tool to search by address, name, or PIN and view full details on any parcel in Jefferson County.

Note: Recent sales in Jefferson County may take a few weeks to show up in the online system with the new owner's name.

Jefferson County Property Tax Info

Property taxes in Jefferson County are paid in arrears. The bill you pay this year covers the prior year's assessment. The lien date is January 1 under 35 ILCS 200/. On that date, the county sets who owns the parcel and what it is worth. Tax bills then go out the following year. Each bill breaks down the amount owed to schools, the county, road districts, and any other local taxing bodies in Jefferson County.

Tax rates vary by township and district. A parcel in Mt. Vernon will carry a different rate than one in a rural area. The county applies each district's rate to the assessed value to figure the final bill. The Assessor's office sets the value. The Treasurer's office collects the money. If you have a question about how much you owe, the Treasurer is the right call. For questions about the value itself or exemptions on your parcel, stick with the assessment office. Both offices work together, but they handle different parts of the process for Jefferson County property records.

State Resources for Jefferson County

The statewide Illinois Property Tax Portal connects to county-level search tools across the state. Pick Jefferson County from the list and it takes you right to the local property tax inquiry system. This is a good backup if you are not sure which county site to use or if the direct DevNet link is not loading.

Select Jefferson County from the state portal list to access the local property tax search and look up parcels in the county.

The Illinois Department of Revenue property tax page has general guidance that applies to all counties, including Jefferson. It covers how assessments work, what exemptions are available, and how to contact state staff if you need help. The Local Government division can be reached at 217-785-6518 or REV.LOCALTAX@ILLINOIS.GOV. For PIN help, the County PIN Information page can point you to the right resource for Jefferson County property records.

Jefferson County Property Exemptions

Several exemptions can lower the tax bill on a home in Jefferson County. You apply at the Assessor's office in Mt. Vernon. Each one has its own rules. The General Homestead Exemption cuts $6,000 from your assessed value. You must own and live in the home. No age limit applies. This is the most common exemption in Jefferson County property records.

Homeowners 65 and up can get the Senior Citizens Homestead Exemption for an extra $5,000 off. The Senior Citizens Assessment Freeze locks your value so it does not go up, but you must meet income limits. The Disabled Persons Homestead Exemption gives a $2,000 cut. Veterans with a service-connected disability may qualify for the Disabled Veterans Homestead Exemption under 35 ILCS 200/. The Home Improvement Exemption holds off increases from upgrades for up to four years. Once the office approves any of these, they show up in your Jefferson County property records and stay active unless your situation changes.

• General Homestead Exemption: $6,000 off assessed value
• Senior Citizens Homestead Exemption: $5,000 (age 65+)
• Senior Citizens Assessment Freeze: locks value
• Disabled Persons Homestead Exemption: $2,000
• Home Improvement Exemption: defers increases up to 4 years

Note: Most exemptions in Jefferson County require a yearly filing unless the office sends you an automatic renewal notice.

Get Jefferson County Records in Person

Visit the Assessor's office at 100 S. 10th Street, Room 2, in Mt. Vernon during business hours. Bring the property address or PIN. Staff can look up any parcel, print records, and answer questions about your assessment. No appointment is needed. Jefferson County property records are public. Anyone can request to view them.

You can also call (618) 244-8016 for phone help or email lacrunk@jeffersoncounty.illinois.gov. The online search at jeffersonil.devnetwedge.com is the fastest option for basic lookups. But if you need help with an exemption form, want to file an appeal, or have a question that takes more than a quick answer, going to the office in person works best. Assessment notices go out in late summer or fall. You have about 30 days to file a complaint with the Jefferson County Board of Review if you think your value is too high. Bring comparable sales or an appraisal to support your case.

Nearby Counties

These counties border Jefferson County. Property records belong to the county where the parcel sits. If you own land near a county line, verify which county it falls in before you search.