Neosho County, Kansas
Shrink-swell clay limits houses without basements on 72% of Neosho County's mapped land, a higher share than 97% of US counties. A shallow water table limits basements on 64%.
63.7% of the county is in drought on the October 13, 2026 Drought Monitor map. FEMA's flood data list 21 flood losses here since 2016. 70% of homes were built before 1980, against 50% nationally; the median home dates from 1963.
Data as of October 13, 2026 · sources
expansive clay: shrink-swell limits slab homes
high water table: limits basements
in drought, October 13, 2026
of homes built before 1980
Soil under Neosho County
| Expansive clay (limits slab homes) | 71.6% |
| High water table (limits basements) | 64.3% |
| Septic fields very limited | 98.3% |
| Clay swell (LEP, by area) | 7.2% |
| High-swell land (LEP 6%+) | 65.1% |
| Mapped soil | 369,767 acres |
How we count · survey areas KS133 (2025-08-26)
What the numbers mean here
Clay swell averages a linear extensibility of 7.2% by land area here, and 65% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 72% of the mapped land.
Clay shrinks as it dries: 63.7% of the county is in drought on the latest map, and 72% of Neosho County's mapped land has shrink-swell clay.
On 64% of Neosho County's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
Rain over the 12 months to August 2026: 42.42 in, 0.80 in below the 1991-2020 average year of 43.22 in.
USDA rates 98% of the land very limited for septic absorption fields.
Drought
63.7% of the county is in drought (D1 or worse) on the October 13, 2026 map. Part of the county was in drought in 32 of the last 52 weeks; the most was 100% of its area, in 11 weeks, most recently on the September 29, 2026 map.
| Category, October 13, 2026 | Share of county |
|---|---|
| D0 abnormally dry or worse | 100% |
| D1 moderate drought or worse | 63.7% |
| D2 severe or worse | 0.1% |
| D3 extreme or worse | 0% |
| D4 exceptional | 0% |
Flood losses since 2016
21 flood losses since 2016, $319,956 paid. The worst year was 2019, with 17.
| Year | Flood losses |
|---|---|
| 2016 | 0 |
| 2017 | 0 |
| 2018 | 0 |
| 2019 | 17 |
| 2020 | 0 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 0 |
| 2024 | 0 |
| 2025 | 0 |
| 2026 to date | 1 |
Rain
| Average year, 1991-2020 | 43.22 in |
| 12 months to August 2026 | 42.42 in (-0.80) |
| 2025 | 41.80 in (-1.42) |
| Wettest year since 1895 | 2019: 64.39 in |
| Driest year since 1895 | 1963: 20.54 in |
| Days with 1 inch or more, normal at GALESBURG 1NNE (6 mi away) | 13.9 |
Homes
| Housing units | 7,219 |
| Median year built | 1963 |
| Built before 1980 | 70% |
| Built 2000 or later | 13% |
| Owner-occupied | 77% |
| Median value, owner-occupied | $111,300 |
| Single-family detached | 83% |
What repairs cost
Published ranges from cost guides, not quotes. More sources, and where they disagree.
Nearby counties
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Allen County, KS | 22 mi | 75% | 61% |
| Wilson County, KS | 24 mi | 69% | 60% |
| Crawford County, KS | 26 mi | 67% | 79% |
| Labette County, KS | 26 mi | 75% | 72% |
| Bourbon County, KS | 32 mi | 69% | 58% |
| Woodson County, KS | 33 mi | 73% | 72% |
| Montgomery County, KS | 35 mi | 62% | 58% |
| Cherokee County, KS | 38 mi | 52% | 80% |
Sources: USDA SSURGO (August 26, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status