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Fredericktown, Ohio
Inside Fredericktown's city limits, a shallow water table limits basements on 44% of mapped land, the 4th-highest of 7 cities in Knox County. Shrink-swell clay limits houses without basements on 0%.
That water-table share is below Knox County's 65%. FEMA's flood data list 3 flood losses since 2016 in ZIP code 43019 overlapping the city. Of its 1,269 homes, 81% were built before 1980; the median dates from 1960.
Data as of October 13, 2026 · sources · in Knox 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 Fredericktown
Basement waterproofing in Fredericktown: a shallow water table limits basements on 44% of Fredericktown's mapped land, and the ZIP code overlapping Fredericktown logged 3 FEMA flood losses since 2016.
About 900 of Fredericktown's 1,269 homes are detached houses.
Soil under Fredericktown city limits
| Expansive clay (limits slab homes) | 0.0% |
| High water table (limits basements) | 43.9% |
| Septic fields very limited | 87.6% |
| Clay swell (LEP, by area) | 2.5% |
| High-swell land (LEP 6%+) | 0.0% |
| Mapped soil | 1,323 acres |
What the numbers mean here
On 44% of Fredericktown's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 88% of the land very limited for septic absorption fields.
Drought in Knox County
0% of Knox 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 Fredericktown. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 43019 | 100% | 3 | $10,560 |
Homes in Fredericktown
| Housing units | 1,269 |
| Median year built | 1960 |
| Built before 1980 | 81% |
| Built 2000 or later | 6% |
| Owner-occupied | 72% |
| Median value, owner-occupied | $171,200 |
| Single-family detached | 69% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Chesterville | 7 mi | 0% | 14% |
| Mount Vernon | 8 mi | under 1% | 53% |
| Sparta | 10 mi | 8% | 45% |
| Bellville | 10 mi | under 1% | 39% |
| Butler | 10 mi | 0% | 25% |
| Gambier | 11 mi | 0% | 29% |
| Lexington | 14 mi | 2% | 39% |
| Centerburg | 14 mi | under 1% | 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