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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 November 3, 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
Basement waterproofing in Youngstown
Basement waterproofing in Youngstown: a shallow water table limits basements on 34% of Youngstown's mapped land, and the 10 ZIP codes overlapping Youngstown logged 4 FEMA flood losses since 2016.
In Mahoning County, 75% of the 32 flood-loss buildings with a recorded foundation type had basements.
About 23,200 of Youngstown's 29,397 homes are detached houses.
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 |
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.
Youngstown covers 33.9 square miles of land and counts 29,397 housing units, about 866 per square mile.
56% of Youngstown's occupied homes are owner-occupied, and the median owner-occupied home is valued at $63,300; 5% of all homes in the city date from 2000 or later.
The largest soil series under Youngstown is Chili, on 12% of the mapped land, followed by Rittman at 8%.
Clay swell, measured as linear extensibility, averages 2.3% across Youngstown's 22,124 mapped acres.
Drought in Mahoning County
0% of Mahoning County is in drought (D1 or worse) on the November 3, 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 (November 3, 2026) · FEMA NFIP v3 (September 9, 2026) · Census ACS 2020-2024. Methods · Data status