Union County, SC property tax rate
Union County · South Carolina · #15 of 46 in the state
Median annual property tax $579 · median home value $103,600
$579 a year · $48 a month using the area benchmark. Enter a value such as 350,000 or 350,000.00.
A rough planning estimate, not a tax quote.
Below the U.S. benchmark 0.94% (0.6×), above the South Carolina benchmark 0.48%.
Ranked among 46 South Carolina counties with available benchmarks.
What this benchmark means
Median real estate taxes paid ÷ median owner-occupied home value, ACS 2020–2024 — a ratio of two medians, not a statutory rate, not the median of individual bills and not your property's rate. Exemptions people already claim are reflected in the survey; your bill depends on taxable value, local districts, exemptions and reassessment after a sale.
Census figures behind this page
| Median real estate taxes paid | $579 |
|---|---|
| With a mortgage / without | $730 / $476 |
| Median home value | $103,600 |
| Median household income | $41,621 · tax is 1.4% of it |
| Median gross rent | $804 / mo |
| Owner-occupied | 71% of 11,611 homes |
| Population | 26,885 |
When it's due in South Carolina
All states| Annual payment | Due Jan 15 Late after Jan 16 under state law — the exact cutoff time, weekend/holiday carry-over and this year's date are on your bill. |
|---|---|
| Late penalty | 3% penalty Jan 16 - Feb 1; additional 7% penalty (total 10%) Feb 2 - March 16; additional 5% penalty (total 15%) plus execution costs after March 16 (S.C. Code Ann. § 12-45-180) |
| Appeal window | within 90 days after mailing date of property assessment notice to county assessor (S.C. Code Ann. § 12-60-2510) |
Taxes payable without penalty on or before January 15 following the year of assessment. Regular annual schedule; tax year: calendar 2026, bills mailed October. Source: S.C. Code Ann. § 12-45-70, § 12-45-180, rules checked 2026-09-19. Confirm the amount and deadline on your official tax bill.
South Carolina counties with a similar rate
All 46How this benchmark was computed
Median real estate taxes paid by owner-occupied households in Union County ($579) divided by the median value of those homes ($103,600), both from the Census Bureau's American Community Survey 2020–2024 5-year estimates. It is a ratio of two medians — a reasonable area benchmark, not the assessor's mill rate and not any one household's rate. Newly purchased homes are often reassessed to sale price, so a buyer's first bill can run above it. Data & method