Union County, OH Property Taxes (2026)

Union County owners pay a median of $3,847 a year on a median home value of $306,600, an effective rate of 1.25%. That's the 26th-highest rate of 88 Ohio counties with Census data, above 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

1.25%

26th highest of 88 in OH

Median annual bill

$3,847

~$321/month

Median home value

$306,600

Ohio county median

1.08%

Effective rate

What a protest could save you in Union County

Enter the market value from your appraisal notice. We apply Union County's 1.25% effective rate and a 10–15% reduction, the typical range for successful protests.

$
Est. annual tax
$3,833
Savings at 10–15% off
$383–$575
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Union County vs. Ohio vs. U.S. property tax rates

Union County1.25%
Ohio county median1.08%
U.S. county median0.84%

Key stat: Union County's effective property tax rate is 1.25%, vs. 1.08% for the median Ohio county and 0.84% for the median U.S. county. It ranks 26th 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 Union County

  1. 1

    Review your assessment notice

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

  2. 2

    File your complaint before the deadline

    The Union 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 $3,847 bill, 10–15% off is $385–$577 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 Union 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 Union County, Ohio?
The median effective property tax rate in Union County is 1.25%: a median annual bill of $3,847 on a median home value of $306,600. That's the 26th-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 Union County?
The median Union County property tax bill is $3,847 a year, about $321 a month, compared with a Ohio county median of $1,856.
What is the deadline to complaint property taxes in Union County?
The deadline to complaint in Union County is March 31. Missing it means waiting until the next assessment cycle.
Is Union County a high property tax area?
Union County's 1.25% effective rate is above the Ohio county median of 1.08% and above the U.S. county median of 0.84%. That's the 26th-highest rate of 88 Ohio counties with Census data.
Can TaxDrop help lower my Union County property taxes?
TaxDrop analyzes your property against local comparable sales and helps you complaint your assessment.

Property taxes in nearby counties

Delaware County

Rate: 1.64%

Median bill: $6,896

Logan County

Rate: 1.05%

Median bill: $1,947

Marion County

Rate: 0.98%

Median bill: $1,432

Champaign County

Rate: 1.04%

Median bill: $1,938

Madison County

Rate: 1.05%

Median bill: $2,437

Franklin County

Rate: 1.55%

Median bill: $4,110

Hardin County

Rate: 1.12%

Median bill: $1,513

Morrow County

Rate: 1.10%

Median bill: $2,208

← All 88 Ohio counties

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