What Dickinson County, KS's soil rates for a septic system
Very limited
93.8% of Dickinson County, KS's surveyed soil comes back "Very limited" in USDA's own SSURGO data, the county's dominant condition for a septic absorption field. A standard gravity system routinely fails on ground like this; the same share of the county falls in USDA's worst absorption-field bucket outright. Dickinson County, KS is 847.068 square miles with a population of 18,621.
What Dickinson County's reading doesn't cover
Nothing about Dickinson County, KS's SSURGO figure applies to a specific address - it's a county-wide average. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Dickinson County will actually do.
What a system would cost here
With 93.8% of Dickinson 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.
Dickinson County's rank among Kansas counties
Nationally, Dickinson County, KS is the 824-most-constrained of 3,058 rated counties for septic soil. Within Kansas alone it ranks 38 of 105.
Further reading
How this rating is built, and its real limits · Conventional vs. engineered septic systems