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Crown City, Ohio
Inside Crown City's city limits, a shallow water table limits basements on 21% of mapped land. Shrink-swell clay limits houses without basements on 19%, the 2nd-highest of 6 cities in Gallia County.
That water-table share is below Gallia County's 26%. FEMA's flood data list 1 flood losses since 2016 in ZIP code 45623 overlapping the city. Of its 229 homes, 61% were built before 1980; the median dates from 1975.
Data as of October 13, 2026 · sources · in Gallia 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 Crown City
Basement waterproofing in Crown City: a shallow water table limits basements on 21% of Crown City's mapped land, and the ZIP code overlapping Crown City logged 1 FEMA flood losses since 2016.
About 200 of Crown City's 229 homes are detached houses.
Soil under Crown City city limits
| Expansive clay (limits slab homes) | 19.1% |
| High water table (limits basements) | 20.9% |
| Septic fields very limited | 74.9% |
| Clay swell (LEP, by area) | 3.9% |
| High-swell land (LEP 6%+) | 19.1% |
| Mapped soil | 766 acres |
What the numbers mean here
Clay swell averages a linear extensibility of 3.9% by land area here, and 19% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 19% of the mapped land.
On 21% of Crown City's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 75% of the land very limited for septic absorption fields.
Drought in Gallia County
0% of Gallia 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 Crown City. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 45623 | 100% | 1 | $0 |
Homes in Crown City
| Housing units | 229 |
| Median year built | 1975 |
| Built before 1980 | 61% |
| Built 2000 or later | 7% |
| Owner-occupied | 68% |
| Median value, owner-occupied | $146,300 |
| Single-family detached | 68% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Athalia | 6 mi | 26% | 8% |
| Proctorville | 11 mi | 0% | 31% |
| Chesapeake | 14 mi | 28% | 5% |
| Gallipolis | 17 mi | 15% | 33% |
| South Point | 19 mi | 2% | 14% |
| Coal Grove | 20 mi | 2% | 4% |
| Rio Grande | 21 mi | 21% | 54% |
| Ironton | 21 mi | 2% | 3% |
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