Search Cooper County Property Tax Records

Cooper County property tax records are handled by the assessor and collector at the courthouse in Boonville, Missouri. You can search for real estate values, personal property data, and payment history through the county's online assessor portal or by contacting the offices directly. Cooper County sits along the Missouri River in the central part of the state. This page covers how to find your Cooper County tax bill, check assessed values, and pay your property taxes on time.

Cooper County Property Tax Assessor

The Cooper County Assessor's office is at 200 Main Street, Boonville, MO 65233. Call (660) 882-2026 for help. The fax number is (660) 882-5647. The assessor determines the market value for all real property and personal property in Cooper County.

All property is valued as of January 1 each year. Real estate gets reassessed in odd-numbered years. The assessor uses comparable sales, cost data, and income approaches to figure what each parcel is worth. Residential property in Cooper County is assessed at 19% of market value under RSMo 137.115. Commercial property uses a 32% rate. Agricultural land gets the 12% rate based on soil productivity, which is important in a county with as much farm ground as Cooper County has. Personal property like vehicles and boats is set at 33 1/3% of book value. Farm equipment uses the lower 12% rate. The county clerk applies local levy rates to these assessed values to calculate the final tax bill. Because Cooper County includes several school districts, fire districts, and other taxing entities, the total levy rate differs depending on where your property sits.

Personal property declarations are due by March 1. Late filers face a penalty of $15 to $105 depending on property value, per RSMo 137.280.

Cooper County Tax Records Online

You can search Cooper County property records through the Cooper County Assessor portal. The site lets you look up real estate and personal property by name, address, or parcel number. It also includes a GIS mapping tool where you can click on parcels to see assessment data and aerial views.

The Missouri Association of Counties Cooper County page lists contact information for all county offices including the assessor, collector, clerk, and recorder.

Pay Cooper County Property Taxes

The Cooper County Collector of Revenue handles all tax payments. Call (660) 882-2114 to reach the office. The collector's office is at the Cooper County Courthouse in Boonville. Tax bills go out in the fall and are due by December 31 each year.

If you miss the deadline, interest and penalties start on January 1. You can pay at the courthouse, by mail, or through online options if available. The postmark date counts for mailed payments. The collector issues paid tax receipts, which you need for vehicle plate renewals in Missouri. Without a paid personal property receipt or a waiver, you cannot register your car at the DMV. The collector also conducts the annual tax sale for real estate with back taxes of two or more years, following Chapter 140 of the Missouri Revised Statutes. These sales typically take place on the fourth Monday in August.

Note: Missouri does not prorate property taxes, so if you lived in Cooper County on January 1, you owe the full year even if you moved out later.

Cooper County Tax Appeals and Credits

If your Cooper County assessment seems too high, file a complaint with the Board of Equalization through the county clerk before the third Monday in June. The board hears cases each summer. Bring comparable sales or a professional appraisal.

If the board does not lower your value, appeal to the Missouri State Tax Commission by September 30. The process is free for residential appeals. The commission can order the assessor to adjust the number. Cooper County residents 65 or older and 100% disabled individuals may qualify for the Missouri Property Tax Credit. The maximum is $1,100 for homeowners and $750 for renters. File your claim through the Missouri Department of Revenue. The Missouri Assessors Association has a statewide directory of assessor offices for reference.

Nearby Counties

These counties border Cooper County along the Missouri River. Each has its own assessor and collector handling property tax records.