Washington County, IA property tax
Census ACS 2023 5-year estimates · updated 2026-09-20
The median effective property tax rate in Washington County is 1.35%, below the Iowa median of 1.43% and above the national median of 0.98%. The median homeowner pays $2,688 a year on a home worth $199,600.
- Effective rate
- 1.35%
- Median annual bill
- $2,688
- Median home value
- $199,600
- Rank in Iowa
- 47of 99
Estimated annual bill by home value
| Home value | Estimated bill | Per month |
|---|---|---|
| $200,000 | $2,700 | $225 |
| $300,000 | $4,050 | $338 |
| $400,000 | $5,400 | $450 |
| $500,000 | $6,750 | $563 |
| $750,000 | $10,125 | $844 |
| $1,000,000 | $13,500 | $1,125 |
Washington County compared with Iowa and the US
| Area | Effective rate | Median bill | Median home value |
|---|---|---|---|
| Washington County | 1.35% | $2,688 | $199,600 |
| Iowa median | 1.43% | $2,795 | $195,900 |
| United States median | 0.98% | $2,969 | n/a |
Rates and medians: U.S. Census Bureau, ACS 2023 5-year estimates, tables B25103 and B25077. Effective rate is median taxes paid divided by median owner-occupied home value.
Frequently asked questions
What is the property tax rate in Washington County, IA?
The median effective property tax rate in Washington County is 1.35% of home value, below the Iowa median of 1.43% and above the national median of 0.98%. The median homeowner pays $2,688 a year on a median home value of $199,600 (Census ACS 2023 5-year).
How much is property tax on a $400,000 house in Washington County?
About $5,400 per year at the county's median effective rate of 1.35%, before exemptions. The exact bill depends on the city, school district and special districts that serve the parcel, so treat this as a planning estimate.
How does Washington County compare with the rest of Iowa?
Washington County ranks 47 of 99 Iowa counties by effective rate. The Iowa median is 1.43% and the median bill is $2,795.