HomeOhioHardin CountyDunkirk
Dunkirk, Ohio
Inside Dunkirk's city limits, a shallow water table limits basements on 76% of mapped land, higher than 61% of Ohio cities. Shrink-swell clay limits houses without basements on 15%, the 5th-highest of 8 cities in Hardin County.
That water-table share is below Hardin County's 97%. FEMA's flood data list no flood losses since 2016 in ZIP code 45836 overlapping the city. Of its 417 homes, 89% were built before 1980; the median dates from 1939 or earlier.
Data as of October 13, 2026 · sources · in Hardin 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 Dunkirk
Basement waterproofing in Dunkirk: a shallow water table limits basements on 76% of Dunkirk's mapped land, more than in 61% of Ohio cities.
About 400 of Dunkirk's 417 homes are detached houses.
Soil under Dunkirk city limits
| Expansive clay (limits slab homes) | 14.9% |
| High water table (limits basements) | 76.1% |
| Septic fields very limited | 81.8% |
| Clay swell (LEP, by area) | 4.8% |
| High-swell land (LEP 6%+) | 3.2% |
| Mapped soil | 457 acres |
What the numbers mean here
On 76% of Dunkirk's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 82% of the land very limited for septic absorption fields.
Drought in Hardin County
0% of Hardin 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 Dunkirk. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 45836 | 100% | 0 | $0 |
Homes in Dunkirk
| Housing units | 417 |
| Median year built | 1939 or earlier |
| Built before 1980 | 89% |
| Built 2000 or later | 7% |
| Owner-occupied | 75% |
| Median value, owner-occupied | $99,200 |
| Single-family detached | 87% |
Nearby cities
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