Home and mortgage
Johnson County, IA Property Tax Calculator
Johnson County homeowners pay a median $4,681 a year in property tax, 1.52% of a median $308,600 home: above Iowa's 1.39% and the national 0.94%.
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Property tax in Johnson County by home value, at 1.52%
| Home value | A year | A month |
|---|---|---|
| $150,000 | $2,276 | $190 |
| $230,000 | $3,489 | $291 |
| $310,000 | $4,703 | $392 |
| $460,000 | $6,978 | $582 |
| $620,000 | $9,405 | $784 |
Johnson County against Iowa and the US
| Effective rate | Median tax | Median home value | Median household income | |
|---|---|---|---|---|
| Johnson County | 1.52% | $4,681 | $308,600 | $74,935 |
| Iowa | 1.39% | $2,897 | $208,000 | $75,059 |
| United States | 0.94% | $3,119 | $332,700 | $80,734 |
How this calculator works
Median real estate taxes paid ÷ median home value in Johnson County, from the Census Bureau's American Community Survey 2020–2024 5-year estimates. The calculator starts at the county's median home value and rate.
Questions people ask
What is the property tax rate in Johnson County?
The effective rate is 1.52%: a median $4,681 a year on a median $308,600 home. That's the 4th highest of the 11 Iowa counties we cover.
How much is property tax on a $400,000 house in Johnson County?
About $6,068 a year, $506 a month, at the county's effective rate, before any exemption.
How does Johnson County compare with the rest of Iowa?
Its rate is above the state's 1.39%. Across Iowa, covered counties range from 1.23% to 1.68%.
How do I lower my Johnson County property tax?
Apply for every exemption you qualify for, such as a homestead exemption, and appeal your assessment if it is higher than comparable homes sold nearby; the county assessor explains the deadlines.
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Sources
Updated by the RateHerald team. The maths is tested against worked examples; report a problem.