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Youngstown, Ohio
Inside Youngstown's city limits, a shallow water table limits basements on 34% of mapped land. Shrink-swell clay limits houses without basements on under 1%.
That water-table share is below Mahoning County's 77%. FEMA's flood data list 4 flood losses since 2016 in the 10 ZIP codes overlapping the city. Of its 29,397 homes, 90% were built before 1980; the median dates from 1950.
Data as of September 22, 2026 · sources · in Mahoning County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 10 overlapping ZIPs
of homes built before 1980
Soil under Youngstown city limits
| Expansive clay (limits slab homes) | 0.4% |
| High water table (limits basements) | 34.2% |
| Septic fields very limited | 54.8% |
| Clay swell (LEP, by area) | 2.3% |
| High-swell land (LEP 6%+) | 0.3% |
| Urban land, not rated | 23.5% |
| Mapped soil | 22,124 acres |
| Soil series | Share here | Series nationally: high water table |
|---|---|---|
| Chili | 12% | 0% |
| Rittman | 8% | 99% |
| Wadsworth | 6% | n/a |
| Loudonville | 5% | n/a |
| Bogart | 4% | n/a |
| Sebring | 3% | n/a |
What the numbers mean here
On 34% of Youngstown's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 55% of the land very limited for septic absorption fields.
Drought in Mahoning County
0% of Mahoning County is in drought (D1 or worse) on the September 22, 2026 map. County detail.
Flood losses by ZIP code
FEMA flood records since 2016 in the ZIP codes that overlap Youngstown. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 44505 | 31% | 0 | $0 |
| 44502 | 17% | 0 | $0 |
| 44509 | 15% | 1 | $7,999 |
| 44511 | 12% | 2 | $3,844 |
| 44510 | 6% | 0 | $0 |
| 44506 | 5% | 0 | $0 |
| 44507 | 5% | 0 | $0 |
| 44504 | 4% | 1 | $5,192 |
| 44503 | 1% | 0 | $0 |
| 44555 | under 1% | 0 | $0 |
Homes in Youngstown
| Housing units | 29,397 |
| Median year built | 1950 |
| Built before 1980 | 90% |
| Built 2000 or later | 5% |
| Owner-occupied | 56% |
| Median value, owner-occupied | $63,300 |
| Single-family detached | 79% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Campbell | 3 mi | 2% | 40% |
| Struthers | 4 mi | under 1% | 16% |
| Girard | 5 mi | 0% | 47% |
| Poland | 6 mi | under 1% | 53% |
| Hubbard | 6 mi | under 1% | 59% |
| McDonald | 6 mi | 0% | 32% |
| Lowellville | 6 mi | 0% | 22% |
| Canfield | 8 mi | 19% | 85% |
Sources: USDA SSURGO (August 5, 2026) · US Drought Monitor (September 22, 2026) · FEMA NFIP v3 (September 9, 2026) · Census ACS 2020-2024. Methods · Data status