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Martinsburg, Ohio
Inside Martinsburg's city limits, a shallow water table limits basements on 24% of mapped land. Shrink-swell clay limits houses without basements on 0%.
That water-table share is below Knox County's 65%. FEMA's flood data list 1 flood losses since 2016 in the 2 ZIP codes overlapping the city. Of its 125 homes, 86% were built before 1980; the median dates from 1939 or earlier.
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 2 overlapping ZIPs
of homes built before 1980
Basement waterproofing in Martinsburg
Basement waterproofing in Martinsburg: a shallow water table limits basements on 24% of Martinsburg's mapped land, and the 2 ZIP codes overlapping Martinsburg logged 1 FEMA flood losses since 2016.
About 100 of Martinsburg's 125 homes are detached houses.
Soil under Martinsburg city limits
| Expansive clay (limits slab homes) | 0.0% |
| High water table (limits basements) | 24.5% |
| Septic fields very limited | 91.1% |
| Clay swell (LEP, by area) | 4.0% |
| High-swell land (LEP 6%+) | 0.1% |
| Mapped soil | 114 acres |
| Soil series | Share here | Series nationally: high water table |
|---|---|---|
| Loudonville | 67% | n/a |
| Homewood | 14% | n/a |
| Titusville | 8% | n/a |
| Mechanicsburg | 3% | n/a |
| Gresham | 2% | n/a |
| Coshocton | under 1% | 98% |
What the numbers mean here
On 24% of Martinsburg's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 91% 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 Martinsburg. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 43037 | 56% | 0 | $0 |
| 43080 | 40% | 1 | $3,634 |
Homes in Martinsburg
| Housing units | 125 |
| Median year built | 1939 or earlier |
| Built before 1980 | 86% |
| Built 2000 or later | 0% |
| Owner-occupied | 63% |
| Median value, owner-occupied | $95,700 |
| Single-family detached | 80% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Utica | 5 mi | 0% | 80% |
| St. Louisville | 8 mi | 0% | 5% |
| Gambier | 8 mi | 0% | 29% |
| Mount Vernon | 10 mi | under 1% | 53% |
| Danville | 13 mi | under 1% | 84% |
| Hanover | 14 mi | 0% | 34% |
| Newark | 14 mi | under 1% | 20% |
| Nellie | 16 mi | 3% | 31% |
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