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County tax profile · 2026 · Census ACS + IRS data

Property Tax & Income in Cass County, Iowa

Cass County has an effective property tax rate of 1.34%. On the median home value of $150,300, that's roughly $2,019 per year. Median household income is $63,013.

Effective Property Tax Rate1
1.34%
median tax $2,019 ÷ median home $150,300
Median Home Value1
$150,300
owner-occupied
Median Household Income1
$63,013
per-capita $37,667
Est. Annual Tax on Median Home1
$2,019
at 1.34% effective rate

What you'll pay, at a glance

Property taxes are the largest local tax most homeowners pay. The effective rate measures the real tax bill as a share of home value — a more useful number than the nominal “mill rate,” because assessment practices vary county to county.

MetricCass CountyIowa (state context)
Effective property tax rate11.34%1.32%
Median home value1$150,300—
State income tax3top rate 3.80%top rate 3.80%
State sales tax36.94% combined6.94% combined

How this is calculated

The effective property tax rate is the median real-estate tax bill divided by the median home value — both for owner-occupied homes, from the U.S. Census Bureau's American Community Survey (ACS 5-year estimates)1. Median income is also from the ACS1. Federal and state income-tax figures use IRS2 and Tax Foundation3 data.

About Cass County, IA

Cass County offers a relatively affordable entry point for Iowa homebuyers, with a median home value of $150,300. Property taxes here run at an effective rate of 1.343%, slightly above Iowa's statewide median of 1.319% and ranking 43rd among the state's 99 counties. That rate translates to a median annual tax bill of $2,019. Households earning the median income of $63,013 would find that bill takes up a fairly small share of their budget, though buyers should note the national median rate sits much lower at 0.794%. Per-capita income in the county is $37,667. Communities like Griswold, Lewis, and Wiota anchor this rural southwest Iowa county, where lower home prices help offset the somewhat higher tax rate compared with much of the country.

Frequently asked questions

What is the property tax rate in Cass County, IA?
The effective rate is 1.34% — meaning the median tax bill equals about 1.34% of the median home value.
How much are property taxes on a median home?
On the median home ($150,300), the estimated annual bill is about $2,019.
Is Cass County's rate high or low?
Compare it to the state median of 1.32% and the national average near 1.1%.
How does the effective rate differ from my mill rate?
A mill rate is the nominal levy per $1,000 of assessed value. The effective rate reflects what you actually pay after exemptions and assessments — it's the median tax bill as a share of median home value, so it better predicts your real cost.
Will a reassessment raise my tax bill?
Not necessarily. If your home's assessed value rises, your bill can go up, but only if the mill rate and exemptions stay flat. Contact the Cass County assessor's office to review your current assessment.
Can I appeal my property tax assessment?
Yes. Most counties allow an appeal when you believe the assessed value exceeds the market value. File with the Cass County assessor within the local deadline, typically with comparable sales as evidence.
Sources
[1] U.S. Census Bureau — ACS 5-Year (2023) — Median home value (B25077), median real-estate taxes (B25103), median household income (B19013), per-capita income (B19301).
[2] IRS — Statistics of Income — County income, AGI, and real-estate taxes paid.
[3] Tax Foundation — State income, sales, corporate, and estate/inheritance tax rates.