HomeOhioAuglaize CountyNew Knoxville
New Knoxville, Ohio
Inside New Knoxville's city limits, a shallow water table limits basements on over 99% of mapped land, the highest of 8 cities in Auglaize County. Shrink-swell clay limits houses without basements on 32%, the 2nd-highest of 8 cities in Auglaize County.
That water-table share is above Auglaize County's 94%. FEMA's flood data list 1 flood losses since 2016 in ZIP code 45871 overlapping the city. Of its 425 homes, 76% were built before 1980; the median dates from 1954.
Data as of October 13, 2026 · sources · in Auglaize County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 1 overlapping ZIP
of homes built before 1980
Basement waterproofing in New Knoxville
Basement waterproofing in New Knoxville: a shallow water table limits basements on over 99% of New Knoxville's mapped land, more than in 97% of Ohio cities, and the ZIP code overlapping New Knoxville logged 1 FEMA flood losses since 2016.
About 300 of New Knoxville's 425 homes are detached houses.
Soil under New Knoxville city limits
| Expansive clay (limits slab homes) | 32.0% |
| High water table (limits basements) | 99.9% |
| Septic fields very limited | 99.8% |
| Clay swell (LEP, by area) | 4.8% |
| High-swell land (LEP 6%+) | 3.6% |
| Mapped soil | 619 acres |
What the numbers mean here
Clay swell averages a linear extensibility of 4.8% by land area here, and 4% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 32% of the mapped land.
On over 99% of New Knoxville's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates over 99% of the land very limited for septic absorption fields.
Drought in Auglaize County
0% of Auglaize County is in drought (D1 or worse) on the October 13, 2026 map. County detail.
Flood losses by ZIP code
FEMA flood records since 2016 in the ZIP codes that overlap New Knoxville. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 45871 | 100% | 1 | $5,000 |
Homes in New Knoxville
| Housing units | 425 |
| Median year built | 1954 |
| Built before 1980 | 76% |
| Built 2000 or later | 16% |
| Owner-occupied | 67% |
| Median value, owner-occupied | $180,700 |
| Single-family detached | 73% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Kettlersville | 5 mi | 40% | 99% |
| New Bremen | 5 mi | 27% | 99% |
| St. Marys | 5 mi | 11% | 68% |
| Minster | 8 mi | 34% | over 99% |
| Botkins | 8 mi | 20% | 89% |
| Wapakoneta | 8 mi | 18% | 72% |
| Buckland | 9 mi | 16% | 79% |
| Anna | 10 mi | 22% | 97% |
Sources: USDA SSURGO (August 5, 2026) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · Census ACS 2020-2024. Methods · Data status