Grundy County, IA Property Taxes (2026)

Grundy County owners pay a median of $1,929 a year on a median home value of $180,500, an effective rate of 1.07%. That's the 91st-highest rate of 99 Iowa counties with Census data, below the Iowa county median of 1.34%.

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

Is your Grundy appraisal too high?

We compare your value to recent Grundy County sales and show you in about a minute whether a appeal is worth it.

  • Free check
  • No credit card

Effective tax rate

1.07%

91st highest of 99 in IA

Median annual bill

$1,929

~$161/month

Median home value

$180,500

Iowa county median

1.34%

Effective rate

What a protest could save you in Grundy County

Enter the market value from your appraisal notice. We apply Grundy County's 1.07% effective rate and a 10–15% reduction, the typical range for successful protests.

$
Est. annual tax
$1,931
Savings at 10–15% off
$193–$290
Check my actual assessment →

Grundy County vs. Iowa vs. U.S. property tax rates

Grundy County1.07%
Iowa county median1.34%
U.S. county median0.84%

Key stat: Grundy County's effective property tax rate is 1.07%, vs. 1.34% for the median Iowa county and 0.84% for the median U.S. county. It ranks 91st of 99 in Iowa. 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 Grundy County

  1. 1

    Review your assessment notice

    Check the assessed value from the Grundy County Assessor. Compare it to recent sales of similar homes nearby.

  2. 2

    File your appeal before the deadline

    The Grundy County deadline is April 25 – May 5. 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 Assessor.

  5. 5

    Get your decision

    If you win, your assessed value and bill go down. On a $1,929 bill, 10–15% off is $193–$289 a year.

Want help with it?

TaxDrop builds your case from comparable sales data.

Check my assessment

Property tax exemptions in Iowa

Iowa homeowners may qualify for exemptions that reduce taxable value. Check with the Grundy County Assessor 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 Grundy County, Iowa?
The median effective property tax rate in Grundy County is 1.07%: a median annual bill of $1,929 on a median home value of $180,500. That's the 91st-highest rate of 99 Iowa 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 Grundy County?
The median Grundy County property tax bill is $1,929 a year, about $161 a month, compared with a Iowa county median of $1,976.
What is the deadline to appeal property taxes in Grundy County?
The deadline to appeal in Grundy County is April 25 – May 5. Missing it means waiting until the next assessment cycle.
Is Grundy County a high property tax area?
Grundy County's 1.07% effective rate is below the Iowa county median of 1.34% and above the U.S. county median of 0.84%. That's the 91st-highest rate of 99 Iowa counties with Census data.
Can TaxDrop help lower my Grundy County property taxes?
TaxDrop analyzes your property against local comparable sales and helps you appeal your assessment.

Property taxes in nearby counties

Butler County

Rate: 1.38%

Median bill: $2,158

Hardin County

Rate: 1.43%

Median bill: $1,613

Black Hawk County

Rate: 1.53%

Median bill: $2,790

Tama County

Rate: 1.39%

Median bill: $1,945

Marshall County

Rate: 1.51%

Median bill: $2,030

Franklin County

Rate: 1.35%

Median bill: $1,597

Bremer County

Rate: 1.35%

Median bill: $2,796

Story County

Rate: 1.47%

Median bill: $3,586

← All 99 Iowa counties

Stop overpaying on property taxes

See in about a minute whether your Grundy value looks too high.

Check my assessment — free