Septic soil in Hamilton County, FL, by the numbers
Very limited
Soil across 88.6% of Hamilton County, FL rates "Very limited" in USDA's septic-absorption-field interpretation. That reading means a conventional system is a poor bet here - 88.6% of Hamilton County lands in the strictest "very limited" bucket USDA uses. Hamilton County, FL is 514.295 square miles with a population of 14,334.
What Hamilton County's reading doesn't cover
USDA's survey covers the whole of Hamilton County, FL at once, not any single address. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Hamilton County will actually do.
What a system would cost here
With 88.6% of Hamilton County rating "Very limited", a standard gravity system is not a safe assumption here. The engineered-system range, $10,000-$40,000 (mound or aerobic treatment), is the more realistic number to plan around, against $3,000-$8,000 for a conventional system on the rare lot that passes.
How Hamilton County, FL compares
Nationally, Hamilton County, FL is the 1,409-most-constrained of 3,058 rated counties for septic soil. Within Florida alone it ranks 30 of 65.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems