Sully County, SD Property Taxes (2026)

Sully County owners pay a median of $1,697 a year on a median home value of $198,700, an effective rate of 0.85%. That's the 59th-highest rate of 65 South Dakota counties with Census data, below the South Dakota county median of 1.08%.

Updated October 2026 · Data: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023)

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Effective tax rate

0.85%

59th highest of 65 in SD

Median annual bill

$1,697

~$141/month

Median home value

$198,700

South Dakota county median

1.08%

Effective rate

What a protest could save you in Sully County

Enter the market value from your appraisal notice. We apply Sully County's 0.85% effective rate and a 10–15% reduction, the typical range for successful protests.

$
Est. annual tax
$1,689
Savings at 10–15% off
$169–$253
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Sully County vs. South Dakota vs. U.S. property tax rates

Sully County0.85%
South Dakota county median1.08%
U.S. county median0.84%

Key stat: Sully County's effective property tax rate is 0.85%, vs. 1.08% for the median South Dakota county and 0.84% for the median U.S. county. It ranks 59th of 65 in South Dakota. Effective rate = median tax bill ÷ median home value, so it already reflects typical exemptions. (Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023))

How to appeal your property taxes in Sully County

  1. 1

    Review your assessment notice

    Check the assessed value from the Sully County Director of Equalization. Compare it to recent sales of similar homes nearby.

  2. 2

    File your appeal before the deadline

    The Sully County deadline is Varies by county. Missing it means waiting until the next assessment year.

  3. 3

    Gather evidence

    Recent comparable sales, photos of condition issues, repair estimates or an independent appraisal.

  4. 4

    Present your case

    Submit evidence or attend a hearing with the County Director of Equalization.

  5. 5

    Get your decision

    If you win, your assessed value and bill go down. On a $1,697 bill, 10–15% off is $170–$255 a year.

Want help with it?

TaxDrop builds your case from comparable sales data.

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Property tax exemptions in South Dakota

South Dakota homeowners may qualify for exemptions that reduce taxable value. Check with the Sully County Director of Equalization for amounts.

Homestead exemption

For your primary residence. Reduces the value used to calculate your bill.

Senior / over-65

Many states add an exemption or freeze for owners 65 and older.

Disability

For homeowners with qualifying disabilities, often similar to the over-65 benefit.

Veterans

Disabled veterans may get partial or full exemptions depending on rating.

Frequently Asked Questions

What is the property tax rate in Sully County, South Dakota?
The median effective property tax rate in Sully County is 0.85%: a median annual bill of $1,697 on a median home value of $198,700. That's the 59th-highest rate of 65 South Dakota counties with Census data. Your own rate depends on which city, school district and special districts you're in. Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023).
How much are property taxes in Sully County?
The median Sully County property tax bill is $1,697 a year, about $141 a month, compared with a South Dakota county median of $1,598.
What is the deadline to appeal property taxes in Sully County?
The deadline to appeal in Sully County is Varies by county. Missing it means waiting until the next assessment cycle.
Is Sully County a high property tax area?
Sully County's 0.85% effective rate is below the South Dakota county median of 1.08% and above the U.S. county median of 0.84%. That's the 59th-highest rate of 65 South Dakota counties with Census data.
Can TaxDrop help lower my Sully County property taxes?
TaxDrop analyzes your property against local comparable sales and helps you appeal your assessment.

Property taxes in nearby counties

Potter County

Rate: 1.37%

Median bill: $1,663

Hughes County

Rate: 1.14%

Median bill: $2,526

Hyde County

Rate: 1.23%

Median bill: $1,650

Stanley County

Rate: 1.43%

Median bill: $2,423

Dewey County

Rate: 1.34%

Median bill: $1,009

Walworth County

Rate: 1.44%

Median bill: $1,866

Faulk County

Rate: 0.76%

Median bill: $946

Hand County

Rate: 0.90%

Median bill: $1,373

← All 65 South Dakota counties

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