Estimate your Clay County property tax with homestead exemptions, by city — and your savings if Amendment 3 passes.
School taxes are 6.27 mills everywhere in Clay County. County-wide levies add 5.73 mills; cities and unincorporated areas add their own.
| Area | Non-school mills | School mills | Total mills |
|---|---|---|---|
| Unincorporated Clay County (average) | 8.57 | 6.27 | 14.84 |
| City of Green Cove Springs | 11.03 | 6.27 | 17.30 |
| City of Keystone Heights | 9.33 | 6.27 | 15.61 |
| City of Orange Park | 11.68 | 6.27 | 17.95 |
| City of Penney Farm | 10.18 | 6.27 | 16.45 |
One mill = $1 per $1,000 of taxable value. Rates are 2025 levies from the Florida Department of Revenue; some special districts vary inside the county.
Taxable value × millage rate ÷ 1,000. Taxable value is your assessed value minus exemptions. With a homestead, the first $25,000 is exempt from all taxes and an additional exemption (up to $26,411 in 2026) applies to assessed value above $50,000 for non-school taxes.
It uses the 2025 tax rates published by the Florida Department of Revenue for each county and city. Some local special districts and MSTUs vary inside a county, so your real bill can differ by a few percent. Your TRIM notice is the official number.