What is the property tax rate in Union County, South Dakota?

Union County has an effective property tax rate of 1.10%. On a home valued at $301,100, homeowners pay approximately $3,317 per year in property taxes.

How much is the average property tax in Union County?

The median annual property tax payment in Union County is $3,317. Homeowners with a mortgage pay a median of $3,343, while those without a mortgage pay $3,263.

How does Union County compare to other counties in South Dakota?

Union County ranks #25 out of 66 counties in South Dakota for property tax rates. The county's effective rate of 1.10% is 4% higher than the South Dakota average of 1.06%.

Union County Property Tax Rate

South Dakota

1.10%effective rate

Union County, South Dakota has an effective property tax rate of 1.10%, which is 20% higher than the national average of 0.92%. On a home valued at $301,100, homeowners pay approximately $3,317 per year in property taxes. Union County ranks #25 out of 66 counties in South Dakota for property tax rates.

Median Tax Paid🏠

$3,317

Per year

Median Home Value📊

$301,100

2024 estimate

Tax as % of Income💰

3.7%

Median income: $89,636

State Rank📍

#25

of 66 counties in SD

Tax Breakdown

With Mortgage

$3,343

median annual tax

Without Mortgage

$3,263

median annual tax

Homeowners with a mortgage in Union County pay on average $80 more per year than those without. This difference often reflects how property tax escrow accounts in mortgaged homes capture the full tax obligation.

How Union County Compares

Union County

1.10%

South Dakota Average

1.06%

National Average

0.92%

Top Counties in South Dakota

Todd

1.81%

McPherson

1.55%

Dewey

1.51%

Corson

1.45%

Potter

1.42%

Stanley

1.32%

Walworth

1.31%

Perkins

1.29%

South Dakota Property Tax Exemptions

Available to Union County homeowners

✓

Owner-Occupied (Tax Reduction)

Assessment frozen for qualifying applicants; property tax reduction varies

Primary residence owners (assessment freeze available for disabled and elderly)

✓

Over 65/Disabled Assessment Freeze

Assessed value frozen at current level

Homeowners age 65+ or disabled with income under $29,854 for single (adjusted annually)

✓

Disabled Veteran

Up to $150,000 of full and true value for totally disabled veterans

Veterans with service-connected disability

Property Tax Calculator

Estimate your annual property tax in Union County

Home Value

$50k$2M

Apply homestead exemption ($100,000 school tax reduction)

Estimated Annual Property Tax

$3,300

$275/month · Rate: 1.10%

Quick Facts

Population17,081

Owner-Occupied70.4%

National Rank#910 of 3,135

Median Income$89,636

Think your property tax is too high?

Homeowners save an average of $1,148/year by appealing their assessment.

Learn How to Appeal →

Frequently Asked Questions

Data Source: U.S. Census Bureau, 2024 American Community Survey 5-Year Estimates. Effective tax rates are calculated by dividing median real estate taxes paid by median home value. Actual property tax rates may vary based on local taxing jurisdictions, exemptions, and assessment practices. This information is for general reference only and should not be used as a substitute for professional tax advice.