Assumption County, Louisiana Property Taxes
Property Taxes in Assumption County, Louisiana
Median Assumption County effective property tax rate: 0.67%, significantly lower than the national median of 1.02%.
Median Assumption County home value: $86,200
Median annual Assumption County tax bill: $543, $1,857 lower than the national median property tax bill of $2,400.
How are property taxes in Assumption County calculated?
Property taxes in Assumption 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 Assumption County or another part of Assumption County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Assumption County, Louisiana Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
0.67%
Estimate Property Tax Bill
$578
$536
How Does the Assumption County Property Tax Calculator Work?
Use this Assumption County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Assumption County's median effective tax rate of 0.67% 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. Assumption County's median property tax bill of $543 is lower than the Louisiana median tax bill of $1,857 and below the national median property tax rate of 1.02%.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Assumption County.
Property Tax Rates Across Assumption County, Louisiana
What Are Effective Property Tax Rates Across Assumption County?
Local government entities set tax rates, which vary widely across Assumption 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 Assumption County's effective property tax rate to other counties in Louisiana or the U.S. median of 1.02%.
Assumption County's median effective rate stands at 0.67%, which is lower than the national median of 1.02%. Within Assumption County, the highest rate is found in NAPOLEONVILLE at 0.72%, while MORGAN CITY has the lowest at 0.47%.
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 Assumption County Tax Rate
0.67%
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 Louisiana Tax Rate
0.92%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Assumption County, Louisiana
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Donaldsonville | 0.23% | 0.43% | 0.65% | 0.79% | 1.01% |
| Morgan City | 0.13% | 0.23% | 0.47% | 0.77% | 1.20% |
| Napoleonville | 0.14% | 0.41% | 0.72% | 1.01% | 1.06% |
| Pierre Part | 0.13% | 0.38% | 0.71% | 1.07% | 1.07% |
| Plattenville | 0.17% | 0.35% | 0.54% | 0.68% | 1.01% |
| Thibodaux | 0.12% | 0.41% | 0.67% | 0.94% | 1.11% |
| Belle Rose | N/A | N/A | N/A | N/A | N/A |
| Labadieville | N/A | N/A | N/A | N/A | N/A |
| Paincourtville | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Assumption County, Louisiana
When examining property taxes in Assumption 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 Assumption Parish 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 Assumption County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of March.
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 Assumption County.
For example, the median tax bill in Assumption County is $543, with tax bills ranging significantly across the county. Donaldsonville has the highest median home price at $145,300.
Property Tax Assessment Values Across Assumption County, Louisiana
Source: Ownwell
$71,400
$108,350
$145,300
Median Assumption County Market Value
$86,200
Median Louisiana Market Value
$118,642
Median United States Market Value
$235,294
Property Tax Assessment Values Across Assumption County, Louisiana
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Donaldsonville | $59,760 | $92,375 | $145,300 | $230,250 | $304,930 |
| Morgan City | $22,300 | $38,900 | $71,400 | $115,700 | $166,500 |
| Napoleonville | $22,600 | $44,125 | $80,334 | $158,425 | $254,150 |
| Pierre Part | $24,600 | $57,300 | $101,300 | $186,100 | $284,720 |
| Plattenville | $38,000 | $84,450 | $128,600 | $183,300 | $219,300 |
| Thibodaux | $40,600 | $71,800 | $113,500 | $182,200 | $266,620 |
| Belle Rose | N/A | N/A | N/A | N/A | N/A |
| Labadieville | N/A | N/A | N/A | N/A | N/A |
| Paincourtville | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Assumption County, Louisiana
Property tax bills in Assumption are based on a home’s assessed value, not its market value, and the county’s tax rate is applied to that assessment to determine the amount owed. Local taxing authorities use the assessed value to calculate the bill, so changes in assessment can directly affect what a homeowner pays each year.
For a typical home, the median home price is $86,200, which helps show how property taxes can vary across the county. Bills are not the same for every homeowner because they depend on the property’s assessed value and the tax rates set by local governments. In Assumption, the 25th percentile tax bill is $192, while the 75th percentile is $1,230 and the 90th percentile is $2,116.
That means homeowners with higher assessed values or fewer exemptions may face larger bills, while lower-assessed properties may owe less.
Median Assumption County Tax Bill
$543
Median Louisiana Tax Bill
$995
Median United States Tax Bill
$2,400
Property Tax Bills Across Assumption County, Louisiana
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Donaldsonville | $181 | $426 | $1,009 | $1,679 | $2,419 |
| Morgan City | $65 | $130 | $320 | $729 | $1,155 |
| Napoleonville | $79 | $239 | $549 | $1,280 | $2,184 |
| Pierre Part | $61 | $224 | $731 | $1,487 | $2,583 |
| Plattenville | $107 | $308 | $641 | $1,162 | $1,560 |
| Thibodaux | $102 | $298 | $734 | $1,422 | $2,393 |
| Belle Rose | N/A | N/A | N/A | N/A | N/A |
| Labadieville | N/A | N/A | N/A | N/A | N/A |
| Paincourtville | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | August 15 |
Links | |
|---|---|
| Assumption Tax Assessor | |
| Website | www.ap-assessor.org |