Missouri Sales Tax Rates: Sullivan County

Missouri:

Sullivan County, Missouri Sales Tax Rate 2026 Up to 8.975%

The Sullivan County Sales Tax is 3.75%

A county-wide sales tax rate of 3.75% is applicable to localities in Sullivan County, in addition to the 4.225% Missouri sales tax.

Some cities and local governments in Sullivan County collect additional local sales taxes, which can be as high as 1%.

Here's how Sullivan County's maximum sales tax rate of 8.975% compares to other counties around the United States:

Lower maximum sales tax than 65% of Missouri counties
Higher maximum sales tax than 75% of counties nationwide

Last updated June 2026

Tax Rates By City in Sullivan County, Missouri

The total sales tax rate in any given location can be broken down into state, county, city, and special district rates. Missouri has a 4.225% sales tax and Sullivan County collects an additional 3.75%, so the minimum sales tax rate in Sullivan County is 7.975% (not including any city or special district taxes). This table shows the total sales tax rates for all cities and towns in Sullivan County, including all local taxes.

City	Sales Tax Rate	Tax Jurisdiction
Milan	8.475%	Milan
Green City	8.975%	Green City
Green Castle	7.975%	Green Castle
Harris	7.975%	Mercer
Humphreys	7.475%	Sullivan
Newtown	7.975%	Mercer
Pollock	7.475%	Sullivan
Winigan	7.475%	Sullivan

Missouri Sales Tax Rates by Zip Code:

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Sullivan County, Missouri has a maximum sales tax rate of 8.975% and an approximate population of 4,374.

Sales tax rates in Sullivan County are determined by five different tax jurisdictions, Green Castle, Green City, Mercer, Milan and Sullivan.

Back to Missouri Sales Tax Handbook Sales tax rates for Sullivan County are current as of June 2026