Research
The 20 Most Unevenly Assessed ZIP Codes in Florida & Texas (2026)
Using official assessment rolls, we measured how unevenly homes in the same ZIP are assessed. Both tables below are drawn from our Assessment Gap Study of 5,891,669 single-family homes across 34 counties. All figures are assessed values straight from the public record.
The 20 most unevenly assessed ZIP codes
ZIPs with at least 250 single-family homes, ranked by spread.
| ZIP (County) | Homes | Median $/sqft | 25th pct | 75th pct | Spread |
|---|---|---|---|---|---|
| 33181 (Miami-Dade County) | 1,548 | $643 | $331 | $870 | 162.7% |
| 33139 (Miami-Dade County) | 906 | $1,393 | $918 | $2,313 | 152% |
| 33786 (Pinellas County) | 841 | $398 | $264 | $628 | 138.3% |
| 33432 (Palm Beach County) | 3,355 | $665 | $403 | $953 | 136.2% |
| 33141 (Miami-Dade County) | 1,941 | $615 | $459 | $1,083 | 136.1% |
| 77019 (Harris County) | 5,240 | $279 | $222 | $519 | 134.3% |
| 33408 (Palm Beach County) | 4,264 | $422 | $333 | $764 | 129.1% |
| 33405 (Palm Beach County) | 5,196 | $347 | $274 | $625 | 127.6% |
| 33483 (Palm Beach County) | 3,358 | $682 | $441 | $981 | 122.5% |
| 32096 (Hamilton County) | 317 | $83 | $51 | $111 | 118.5% |
| 34103 (Collier County) | 2,796 | $415 | $321 | $685 | 113.2% |
| 32328 (Franklin County) | 2,649 | $355 | $229 | $480 | 109.2% |
| 32206 (Duval County) | 5,842 | $67 | $50 | $104 | 108.1% |
| 33401 (Palm Beach County) | 2,766 | $299 | $216 | $450 | 107.9% |
| 32666 (Bradford County) | 549 | $135 | $98 | $204 | 107.3% |
| 34223 (Charlotte County) | 1,242 | $215 | $157 | $324 | 107.2% |
| 77057 (Harris County) | 4,489 | $221 | $175 | $359 | 105.1% |
| 32421 (Calhoun County) | 791 | $76 | $49 | $100 | 102.5% |
| 32352 (Gadsden County) | 476 | $71 | $52 | $105 | 102.4% |
| 77079 (Harris County) | 8,227 | $270 | $172 | $345 | 100.5% |
We measured, for every ZIP with at least 100 single-family homes, how far the 75th-percentile assessed value per square foot sits above the 25th percentile. We call that the spread. A spread of 40% means the more heavily assessed quarter of homes carries at least 40% more assessed value per square foot than the more lightly assessed quarter, in the same ZIP.
Where the most homes sit far above their neighbors
Share of homes assessed at least 15% above the median assessed value per square foot of their own ZIP. These are the homes whose owners most clearly have something to check.
| ZIP (County) | Homes | Homes 15%+ above ZIP median |
|---|---|---|
| 33141 (Miami-Dade County) | 1,941 | 45.7% |
| 33139 (Miami-Dade County) | 906 | 44.9% |
| 33405 (Palm Beach County) | 5,196 | 43.3% |
| 33786 (Pinellas County) | 841 | 42.8% |
| 77019 (Harris County) | 5,240 | 41.9% |
| 34285 (Sarasota County) | 4,707 | 41.6% |
| 32352 (Gadsden County) | 476 | 41.2% |
| 33401 (Palm Beach County) | 2,766 | 41.1% |
| 32233 (Duval County) | 7,072 | 40.8% |
| 32096 (Hamilton County) | 317 | 40.7% |
| 34103 (Collier County) | 2,796 | 40.6% |
| 32206 (Duval County) | 5,842 | 40.4% |
| 33408 (Palm Beach County) | 4,264 | 40.4% |
| 78654 (Travis County) | 327 | 40.4% |
| 33483 (Palm Beach County) | 3,358 | 40.3% |
| 77098 (Harris County) | 2,376 | 40.2% |
| 33181 (Miami-Dade County) | 1,548 | 39.9% |
| 33432 (Palm Beach County) | 3,355 | 39.9% |
| 32351 (Gadsden County) | 5,131 | 39.6% |
| 33946 (Charlotte County) | 2,036 | 39.6% |
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Frequently asked questions
Which ZIP code in Florida or Texas has the most uneven property assessments?
ZIP 33181 in Miami-Dade County, Florida, has the widest assessment spread of the 20 measured: 162.7% between the 25th- and 75th-percentile assessed value per square foot across 1,548 single-family homes.
How is 'unevenly assessed' defined?
For every ZIP with at least 250 single-family homes, we measured how much higher the 75th-percentile assessed value per square foot sits above the 25th percentile. A 100% spread means the more heavily assessed quarter of homes carries at least twice the assessed value per square foot of the more lightly assessed quarter, in the same ZIP.
What does the '15%+ above ZIP median' figure mean for a homeowner?
It is the share of homes in that ZIP whose assessed value per square foot sits at least 15% above the ZIP's own median. If your home is in one of those ZIPs and appears in that band, you have a directly measurable comparable-assessment argument for a property tax appeal.
Where does the ZIP data come from?
Every figure is drawn from official county assessment rolls: Florida Department of Revenue NAL files and Texas appraisal district exports, latest available tax year per county. All numbers are assessed values from the public record.
Ready to protest or appeal?
Use the same data on your own home. The state guides walk through the deadline, form, and evidence for a filing this season.