Florida Property Tax by County: a 2025 data study

The identical $300,000 home costs about $5,525 a year in St. Lucie County — Florida's highest countywide average — but roughly $2,125 in Monroe County, the lowest. That is a $3,400 difference every year for the same house, about 2.6 times as much, driven entirely by where it sits.

This study ranks all 67 Florida counties by their average total millage from the Florida Department of Revenue's 2025 certified tax roll, and applies the same worked homestead example to each so the only variable is the county. A mill is one dollar of tax per one thousand dollars of taxable value. The figures are planning numbers, not bills — district millage varies inside every county and bills add non-ad-valorem assessments.

What the numbers show

The statewide middle: the median county averages 15.4115 mills — on a $300,000 homestead that is roughly $3,967 a year before local district variation.
The spread is large: St. Lucie County (21.557 mills) to Monroe County (8.2361 mills) is a 2.6-times range across the state.
Homestead matters everywhere: claiming the homestead exemption saves about $643 a year on a $300,000 home on average across the 67 counties — and it also starts the Save Our Homes cap that limits future assessment growth.

The extremes

The 10 highest countywide averages

Rank	County	Avg. total mills	Est. tax, $300,000 homestead
1	St. Lucie	21.557	≈ $5,525
2	Alachua	20.8894	≈ $5,358
3	Dixie	19.8732	≈ $5,083
4	Broward	19.8638	≈ $5,109
5	Hillsborough	18.8553	≈ $4,855
6	Pinellas	18.4941	≈ $4,764
7	Miami-Dade	18.4893	≈ $4,771
8	Glades	18.3732	≈ $4,708
9	Duval	17.891	≈ $4,615
10	Leon	17.8003	≈ $4,567

The 10 lowest countywide averages

Rank	County	Avg. total mills	Est. tax, $300,000 homestead
67	Monroe	8.2361	≈ $2,125
66	Walton	9.1512	≈ $2,387
65	Collier	9.8185	≈ $2,553
64	Franklin	10.6003	≈ $2,746
63	Sumter	11.2052	≈ $2,915
62	Santa Rosa	11.7171	≈ $3,056
61	Gulf	12.2198	≈ $3,178
60	Okaloosa	12.2773	≈ $3,194
59	Bay	12.6966	≈ $3,297
58	Sarasota	12.7527	≈ $3,331

See the full ranking of all 67 counties → Every county also has a record lookup, and the buyer estimator projects the first bill after a purchase — because Florida resets a home's assessed value to market at sale (Fla. Stat. §193.155), so the listing's current taxes are rarely what a new owner pays.

How the homestead exemption changes the bill

The $300,000-home example above applies both homestead exemptions under Fla. Stat. §196.031 — the first twenty-five thousand dollars against all levies and the second tier against non-school levies. Non-homestead property gets neither, and carries its own separate ten-percent assessment cap (Fla. Stat. §193.1554) that also does not transfer at sale. That is why the same $300,000 home computes to about $6,467 in St. Lucie County without homestead protections versus $5,525 with them.

Methodology and sources

Countywide average total millage is taken from the Florida Department of Revenue's Millage and Taxes Levied Report for the 2025 final certified roll — the taxable-value-weighted average of every levy in the county (county, school, municipal, and special districts). The worked tax examples apply each county's school and non-school split to a single $300,000 assessed value with the current homestead exemptions, computed by the same engine that powers this site's calculators, so the tables here cannot drift from the live tools. Of Florida's 67 counties, 20 are additionally verified against their own live tax rolls through direct county integrations; the remainder rely on the statewide certified roll. Figures are planning estimates from official data — never a bill, and never tax advice; a parcel's TRIM notice and tax bill control.

Year over year

This edition establishes the 2025-roll baseline. When the Florida Department of Revenue certifies the following year's rolls, this study will add the county-by-county change against this baseline — the counties that rose and fell the most — computed the same way, from the same source. No year-over-year movement is shown here yet, because the comparison roll has not been certified.