Mercer County, OH Property Taxes (2026)

Mercer County owners pay a median of $2,249 a year on a median home value of $208,600, an effective rate of 1.08%. That's the 43rd-highest rate of 88 Ohio counties with Census data, below the Ohio county median of 1.08%.

Updated October 2026 · Data: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023)

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Effective tax rate

1.08%

43rd highest of 88 in OH

Median annual bill

$2,249

~$187/month

Median home value

$208,600

Ohio county median

1.08%

Effective rate

What a protest could save you in Mercer County

Enter the market value from your appraisal notice. We apply Mercer County's 1.08% effective rate and a 10–15% reduction, the typical range for successful protests.

$
Est. annual tax
$2,253
Savings at 10–15% off
$225–$338
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Mercer County vs. Ohio vs. U.S. property tax rates

Mercer County1.08%
Ohio county median1.08%
U.S. county median0.84%

Key stat: Mercer County's effective property tax rate is 1.08%, vs. 1.08% for the median Ohio county and 0.84% for the median U.S. county. It ranks 43rd of 88 in Ohio. Effective rate = median tax bill ÷ median home value, so it already reflects typical exemptions. (Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023))

How to complaint your property taxes in Mercer County

  1. 1

    Review your assessment notice

    Check the assessed value from the Mercer County Auditor. Compare it to recent sales of similar homes nearby.

  2. 2

    File your complaint before the deadline

    The Mercer County deadline is March 31. Missing it means waiting until the next assessment year.

  3. 3

    Gather evidence

    Recent comparable sales, photos of condition issues, repair estimates or an independent appraisal.

  4. 4

    Present your case

    Submit evidence or attend a hearing with the County Auditor.

  5. 5

    Get your decision

    If you win, your assessed value and bill go down. On a $2,249 bill, 10–15% off is $225–$337 a year.

Want help with it?

TaxDrop builds your case from comparable sales data.

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Property tax exemptions in Ohio

Ohio homeowners may qualify for exemptions that reduce taxable value. Check with the Mercer County Auditor for amounts.

Homestead exemption

For your primary residence. Reduces the value used to calculate your bill.

Senior / over-65

Many states add an exemption or freeze for owners 65 and older.

Disability

For homeowners with qualifying disabilities, often similar to the over-65 benefit.

Veterans

Disabled veterans may get partial or full exemptions depending on rating.

Frequently Asked Questions

What is the property tax rate in Mercer County, Ohio?
The median effective property tax rate in Mercer County is 1.08%: a median annual bill of $2,249 on a median home value of $208,600. That's the 43rd-highest rate of 88 Ohio counties with Census data. Your own rate depends on which city, school district and special districts you're in. Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023).
How much are property taxes in Mercer County?
The median Mercer County property tax bill is $2,249 a year, about $187 a month, compared with a Ohio county median of $1,856.
What is the deadline to complaint property taxes in Mercer County?
The deadline to complaint in Mercer County is March 31. Missing it means waiting until the next assessment cycle.
Is Mercer County a high property tax area?
Mercer County's 1.08% effective rate is below the Ohio county median of 1.08% and above the U.S. county median of 0.84%. That's the 43rd-highest rate of 88 Ohio counties with Census data.
Can TaxDrop help lower my Mercer County property taxes?
TaxDrop analyzes your property against local comparable sales and helps you complaint your assessment.

Property taxes in nearby counties

Auglaize County

Rate: 0.96%

Median bill: $1,756

Van Wert County

Rate: 0.97%

Median bill: $1,327

Shelby County

Rate: 1.01%

Median bill: $1,919

Darke County

Rate: 0.93%

Median bill: $1,572

Allen County

Rate: 1.13%

Median bill: $1,782

Miami County

Rate: 1.01%

Median bill: $2,106

Paulding County

Rate: 1.09%

Median bill: $1,382

Putnam County

Rate: 0.98%

Median bill: $1,870

← All 88 Ohio counties

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