Decatur County, Iowa Property Taxes
Property Taxes in Decatur County, Iowa
Median Decatur County effective property tax rate: 1.76%, significantly higher than the national median of 1.02%.
Median Decatur County home value: $67,022
Median annual Decatur County tax bill: $1,186, lower than the national median property tax bill of $2,400.
How are property taxes in Decatur County calculated?
Property taxes in Decatur County are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in Decatur County or another part of Decatur County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Decatur County, Iowa Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.76%
Estimate Property Tax Bill
$1,180
$1,095
How Does the Decatur County Property Tax Calculator Work?
Use this Decatur County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Decatur County's median effective tax rate of 1.76% to generate your estimate.
Enter your property's estimated assessed value — the figure the appraisal district assigns for tax purposes, which is typically lower than market value after applicable exemptions. Our calculator uses the median effective rate for a more accurate estimate than the statutory millage rate alone.
Your actual bill may vary based on your specific exemptions, local school district levies, and any special assessment districts that apply to your property.
Decatur County's median effective tax rate is higher than Iowa's 1.55% state median and above the 1.02% national median. The county's median property tax bill is $1,186, with Lamoni at $1,649 and Davis City at $833.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Decatur County.
Property Tax Rates Across Decatur County, Iowa
What Are Effective Property Tax Rates Across Decatur County?
Local government entities set tax rates, which vary widely across Decatur County. Each year, the county estimates its budget for public services and divides that total by the assessed value of all taxable property within its jurisdiction.
Below, compare Decatur County's effective property tax rate to other counties in Iowa or the U.S. median of 1.02%.
Decatur County's median effective rate stands at 1.76%, which is higher than the national median of 1.02%. Within Decatur County, the highest rate is found in LAMONI at 2.32%, while LINEVILLE has the lowest at 1.40%.
These variations reflect differences in local school district levies, special assessment districts assessments, and special district bonds — which compound the base county rate.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Decatur County Tax Rate
1.76%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Iowa Tax Rate
1.55%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Decatur County, Iowa
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Davis City | 1.32% | 1.46% | 1.67% | 1.98% | 1.99% |
| Decatur | 1.33% | 1.46% | 1.72% | 1.95% | 1.96% |
| Garden Grove | 1.46% | 1.51% | 1.67% | 2.24% | 2.25% |
| Grand River | 1.26% | 1.45% | 1.65% | 1.66% | 1.82% |
| Humeston | 1.27% | 1.34% | 1.44% | 1.54% | 1.60% |
| Lamoni | 1.67% | 1.81% | 2.32% | 2.32% | 2.32% |
| Leon | 1.32% | 1.46% | 1.90% | 2.12% | 2.12% |
| Lineville | 1.10% | 1.25% | 1.40% | 1.48% | 1.68% |
| Van Wert | 1.38% | 1.50% | 1.80% | 1.86% | 1.86% |
| Weldon | 1.42% | 1.55% | 1.70% | 1.84% | 1.84% |
| Kellerton | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Decatur County, Iowa
When examining property taxes in Decatur County, understanding the distinction between "market value" and "assessed value" is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Decatur County assessor estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices:
In Decatur County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of April.
Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Decatur County.
For example, the median tax bill in Decatur County is $1,186, with tax bills ranging significantly across the county. Lineville has the highest median home price at $115,788.
Median Decatur County Market Value
$67,022
Median Iowa Market Value
$169,700
Median United States Market Value
$235,294
Property Tax Assessment Values Across Decatur County, Iowa
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Davis City | $6,966 | $14,712 | $48,050 | $120,577 | $188,052 |
| Decatur | $9,733 | $21,497 | $55,310 | $111,909 | $219,494 |
| Garden Grove | $5,126 | $21,900 | $71,393 | $134,092 | $240,977 |
| Grand River | $14,702 | $32,812 | $62,708 | $108,690 | $183,188 |
| Humeston | $25,232 | $57,951 | $112,250 | $117,910 | $218,596 |
| Lamoni | $12,764 | $35,685 | $75,380 | $135,236 | $193,062 |
| Leon | $8,450 | $29,145 | $63,505 | $130,816 | $234,382 |
| Lineville | $35,340 | $73,112 | $115,788 | $180,706 | $309,953 |
| Van Wert | $4,758 | $20,090 | $60,925 | $115,752 | $183,131 |
| Weldon | $5,140 | $34,015 | $77,994 | $155,999 | $249,181 |
| Kellerton | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Decatur County, Iowa
Property tax bills in Decatur County are calculated by applying the local tax rate to a home’s assessed value, which is based on the market value of the property. The assessed value, not the purchase price, is the starting point for the bill, and local taxing authorities then use that value to determine what a homeowner owes.
Several factors can affect the final tax bill, including the home’s location, the taxing jurisdictions that apply, and any exemptions a homeowner may qualify for. With a median home price of $67,022, property taxes can represent a meaningful part of the cost of owning a home.
The county’s tax bills vary widely, from a $540 25th percentile bill to a $2,194 75th percentile bill, with a $3,451 90th percentile bill. That range shows how much location and assessed value can influence what homeowners pay. In Lamoni, the highest median tax bill is $1,649.00, while Davis City has the lowest median tax bill at $833.00.
Median Decatur County Tax Bill
$1,186
Median Iowa Tax Bill
$2,542
Median United States Tax Bill
$2,400
Property Tax Bills Across Decatur County, Iowa
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Davis City | $106 | $264 | $833 | $1,836 | $2,797 |
| Decatur | $132 | $307 | $863 | $1,905 | $3,599 |
| Garden Grove | $172 | $470 | $1,166 | $2,100 | $3,632 |
| Grand River | $223 | $503 | $928 | $1,640 | $2,623 |
| Humeston | $340 | $694 | $1,624 | $1,808 | $3,500 |
| Lamoni | $328 | $832 | $1,649 | $2,678 | $3,845 |
| Leon | $221 | $565 | $1,180 | $2,094 | $3,459 |
| Lineville | $574 | $952 | $1,479 | $2,460 | $4,033 |
| Van Wert | $133 | $374 | $1,074 | $1,806 | $2,608 |
| Weldon | $96 | $540 | $1,294 | $2,592 | $4,010 |
| Kellerton | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | April 30 |
Links | |
|---|---|
| Decatur Tax Assessor | |
| Website | decatur.iowaassessors.com |