Property Taxes in Barnwell, South Carolina
Median Barnwell, South Carolina effective property tax rate: 0.89%, significantly lower than the national median of 1.02%, and higher than the South Carolina state median of 0.66%.
Median Barnwell, South Carolina home value: $29,600
Median annual Barnwell, South Carolina tax bill: $342, $2,058 lower than the national median property tax bill of $2,400.
How are property taxes in Allendale calculated?
Property taxes in Barnwell, South Carolina 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 Barnwell's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Barnwell, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
How Does the Barnwell Property Tax Calculator Work?
Use this Barnwell property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Barnwell's median effective tax rate of 0.89% — based on actual property records in Allendale County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local appraisal district uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Barnwell's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Your bill may vary by ZIP code within Barnwell: rates range from 0.89% in 29812 to 0.89% in 29812, primarily due to differences in school district levies and local assessment districts.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Barnwell.
About Barnwell Property Taxes
About Property Taxes in Barnwell, Allendale, SC
Barnwell’s median effective property tax rate of 0.89% is lower than the South Carolina state median of 0.66% and lower than the national median of 1.02%. This rate reflects the Allendale County base levy combined with local school district levies and special assessment districts that vary by subdivision throughout the city.
Property tax rates are not uniform across Barnwell. Homeowners in the 29812 ZIP code carry a median effective rate of 0.89%, while those in the same ZIP pay 0.89%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Allendale County. Understanding which part of Barnwell you live in can make a meaningful difference to your annual tax bill.
Barnwell homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before January 15, 2027.
If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.
Property Tax Rates Across Barnwell, Allendale County, South Carolina
As noted earlier, local government entities set tax rates, which can vary widely within a state.
Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.
While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.
Below, you can compare Barnwell's effective property tax rate to other cities in South Carolina and the median property tax rates in South Carolina and the U.S.
Our median effective property tax rate (tax bill Ă· 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 Barnwell Tax Rate
0.89%
Our median effective property tax rate (tax bill Ă· 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 Allendale County Tax Rate
0.94%
Median Effective South Carolina Tax Rate
0.66%
Median Effective United States Tax Rate
1.27%
Property Tax Rates Across Barnwell, Allendale County, South Carolina
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 29812 | 0.36% | 0.85% | 0.89% | 2.88% | 3.03% |
Source: Ownwell
Property Tax Assessment Values Across Barnwell, Allendale County, South Carolina
When examining property taxes in Barnwell, South Carolina, 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 Allendale County appraisal district 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 Allendale County, assessment notices are sent in the spring each year. They’ll typically reach your mailbox by the middle of June.
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. For example, the median home price in Barnwell is $29,600, with tax bills ranging significantly across the county. Zip code 29812 has the highest median home price at $29,600.
Property Tax Assessment Values Across Barnwell, Allendale County, South Carolina
Source: Ownwell
$15,300
$22,450
$29,600
Median Barnwell Market Value
$29,600
Median Allendale County Market Value
$21,200
Median South Carolina Market Value
$188,850
Median United States Market Value
$274,101
Property Tax Assessment Values Across Barnwell, Allendale County, South Carolina
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 29812 | $2,500 | $8,250 | $29,600 | $114,191 | $120,150 |
Source: Ownwell
Property Tax Bills Across Barnwell, Allendale County, South Carolina
Barnwell property tax bills 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 is the starting point for determining how much a homeowner owes, and local taxing authorities use it to calculate the final bill.
Several factors can affect the amount due, including the home’s market value, any exemptions that may apply, and the tax rate set for the area. For homeowners in Barnwell, this means two similar homes can still have different tax bills if their assessed values or exemptions differ.
The median home price in the area is $29,600, and the median tax bill is $342. Tax bills can vary widely, with the 25th percentile at $181 and the 75th percentile at $684. For some homeowners, property taxes are a manageable part of owning a home, while for others they can create a noticeable monthly or annual expense.
Median Barnwell Tax Bill
$342
Median Allendale County Tax Bill
$254
Median South Carolina Tax Bill
$1,227
Median United States Tax Bill
$3,209
Property Tax Bills Across Barnwell, Allendale County, South Carolina
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 29812 | $76 | $181 | $342 | $684 | $1,041 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | January 15 |
Links | |
|---|---|
| Allendale Tax Assessor | |
| Website | www.qpublic.net |