Iowa · County property tax · ACS 2024
Washington County Property Taxes
The median homeowner in Washington County pays $2,788 a year, an effective rate of 1.37%, well above the U.S. average.
- $2,788
- Median tax / yr
- 1.37%
- Effective rate
- +40%
- vs U.S. average
- #37 of 99
- rank in IA
The verdict
Homeowners in Washington County pay a median $2,788 a year in property tax, an effective rate of 1.37%, more affordable than 16% of U.S. counties.
- $2,788
- Median annual tax bill, 2024
- 1.37%
- Effective rate on median home
- #2647 of 3135
- U.S. counties by tax burden
- +40%
- vs the national average bill
Effective rate is the median property tax bill divided by the median home value ($203,900). U.S. Census Bureau, ACS 5-Year Estimates · 2024.
Census Bureau ACS property tax data for Iowa. Owner-occupied homes: 6,641.
The median annual property tax in Washington County is $2,788, which is 4% lower than the Iowa state average and 40% above the national average. The effective tax rate is 1.37% on a median home value of $203,900. Property taxes represent 3.7% of the median household income in this county.
What This Data Tells Us About Washington County
Homeowners in Washington County pay a median annual property tax of $2,788, well above the national median and modestly below the Iowa state median. On a $203,900 median home, that works out to an effective rate of 1.37% once the local assessment base and millage are combined.
Property taxes in Washington County run within the commonly cited 2%-4% national benchmark, at about 3.7% of the $75,647 median household income. Since 2023, the published ACS median estimate has ticked up 3.7%, from $2,688 to $2,788. This compares two release estimates; it does not identify a local policy, assessment, exemption, or household-bill cause.
This page is for informational purposes only and is not tax, legal, or financial advice. Figures describe the median homeowner household in Washington County as reported to the Census Bureau, your own bill can differ based on your parcel's assessed value, exemptions, special districts, and municipal overlays. Always consult your county assessor, tax collector, or a qualified professional before making decisions that depend on these numbers.
With vs Without Mortgage
In Washington County, mortgaged homeowners actually pay 12% less than those without a mortgage, a mild inversion from the national norm worth cross-checking against the historical table above.
How Washington County compares
Effective property tax rate (median tax ÷ median home value), ACS 2024.
Washington County's effective rate is higher than 63% of the 99 counties in Iowa - ranking #37 of 99 for property tax burden.
Where Washington County sits among every U.S. county
Effective property tax rate (median tax ÷ median home value)
1.37% more affordable than 16% of 3,135 U.S. counties
Each bar is a band; taller bars hold more U.S. counties. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2024
Washington County vs Benchmarks
| Metric | Washington County | Iowa Avg | U.S. Avg |
|---|---|---|---|
| Median Annual Tax | $2,788 | $2,897 | $1,993 |
| Effective Tax Rate | 1.37% | 1.39% | 0.92% |
| Median Home Value | $203,900 | $208,000 | $227,791 |
Source: U.S. Census Bureau, ACS 5-Year Estimates. Tax-burden differences across rows reflect millage decisions, assessment-ratio practices, and the residential-vs-commercial mix of each tax base.
Think your Washington County property tax bill is too high?
A successful appeal can lower your assessed value by 10-25%, cutting your annual tax bill by hundreds or thousands of dollars. Use our free Appeal Savings Estimator to project savings on your specific home, then read our step-by-step appeal guide for the exact procedure in Iowa.
Property Tax History
| Year | Median Tax | Effective Rate |
|---|---|---|
| 2024 | $2,788 +3.7% | 1.37% |
| 2023 | $2,688 +6.4% | 1.35% |
| 2022 | $2,527 +8.8% | 1.39% |
| 2021 | $2,322 +3.2% | 1.46% |
| 2020 | $2,250 | 1.42% |
Tax Burden
Tax Affordability Score
An effective rate well above the national average of 0.92% puts Washington County in the "Moderate" band for property tax burden.
How this score is calculated: a 1-10 scale derived mechanically from the ratio of this county's effective rate to the national average effective rate (0.92%) - a ratio at or below 0.5× scores 10, a ratio at or above 2.0× scores 1, with a linear scale between. It is a factual comparison of Census figures only, not a recommendation, quality rating, or endorsement of Washington County or any other county.
Other Counties in Iowa
Frequently Asked Questions
What is the average property tax in Washington County, Iowa? ▼
How does Washington County property tax compare to the national average? ▼
What percentage of income goes to property taxes in Washington County? ▼
Are property taxes increasing in Washington County? ▼
What this means in Washington County
How to use Washington County's property-tax numbers, for budgeting, comparison, or an appeal.
- At Washington County's 1.37% effective rate, a $203,900 home implies about $2,788/yr, plug in your own home's value to estimate your bill. Estimate your bill
- Washington County ranks #37 of 99 counties in Iowa by effective rate, compare it against the rest of the state before you judge your bill. Iowa overview
- If your assessed value looks high relative to Washington County's typical home, you may have grounds to appeal, most jurisdictions have a filing window each year. How to appeal
Effective rate is the county median tax divided by the county median home value ($203,900); your parcel's assessed value, exemptions, and local levies determine your actual bill. U.S. Census Bureau ACS · 2024.
Data as of 2024. Source: U.S. Census Bureau, American Community Survey 5-Year Estimates.
Property tax data reflects median amounts paid by homeowners. Effective rates are calculated as median tax divided by median home value.
PlainPropertyTax is rendered directly from the U.S. Census Bureau's American Community Survey (ACS) 5-year estimates, no number is typed in by an editor. This page draws directly on the Census ACS county-level record for Washington County. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-06-09.