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Mansfield, Ohio
Inside Mansfield's city limits, a shallow water table limits basements on 64% of mapped land, the 4th-highest of 8 cities in Richland County. Shrink-swell clay limits houses without basements on 1%, the 3rd-highest of 8 cities in Richland County.
That water-table share is close to Richland County's 66%. FEMA's flood data list 2 flood losses since 2016 in the 5 ZIP codes overlapping the city. Of its 21,807 homes, 78% were built before 1980; the median dates from 1959.
Data as of November 3, 2026 · sources · in Richland County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 5 overlapping ZIPs
of homes built before 1980
Basement waterproofing in Mansfield
Basement waterproofing in Mansfield: a shallow water table limits basements on 64% of Mansfield's mapped land, and the 5 ZIP codes overlapping Mansfield logged 2 FEMA flood losses since 2016.
About 12,900 of Mansfield's 21,807 homes are detached houses.
Soil under Mansfield city limits
| Expansive clay (limits slab homes) | 1.2% |
| High water table (limits basements) | 63.9% |
| Septic fields very limited | 82.6% |
| Clay swell (LEP, by area) | 3.0% |
| High-swell land (LEP 6%+) | 1.1% |
| Urban land, not rated | 2.5% |
| Mapped soil | 19,811 acres |
| Soil series | Share here | Series nationally: high water table |
|---|---|---|
| Rittman | 22% | 99% |
| Canfield | 18% | over 99% |
| Wooster | 15% | 57% |
| Wadsworth | 6% | n/a |
| Centerburg | 3% | over 99% |
| Ravenna | 3% | n/a |
What the numbers mean here
On 64% of Mansfield's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 83% of the land very limited for septic absorption fields.
Mansfield covers 30.9 square miles of land and counts 21,807 housing units, about 706 per square mile.
51% of Mansfield's occupied homes are owner-occupied, and the median owner-occupied home is valued at $119,600; 8% of all homes in the city date from 2000 or later.
The largest soil series under Mansfield is Rittman, on 22% of the mapped land, followed by Canfield at 18%.
Clay swell, measured as linear extensibility, averages 3.0% across Mansfield's 19,811 mapped acres.
Drought in Richland County
0% of Richland 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 Mansfield. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 44903 | 38% | 2 | $32,944 |
| 44906 | 25% | 0 | $0 |
| 44907 | 18% | 0 | $0 |
| 44902 | 6% | 0 | $0 |
| 44901 | under 1% | 0 | $0 |
Homes in Mansfield
| Housing units | 21,807 |
| Median year built | 1959 |
| Built before 1980 | 78% |
| Built 2000 or later | 8% |
| Owner-occupied | 51% |
| Median value, owner-occupied | $119,600 |
| Single-family detached | 59% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Ontario | 4 mi | 1% | 86% |
| Lexington | 6 mi | 2% | 39% |
| Lucas | 7 mi | 1% | 34% |
| Mifflin | 9 mi | 5% | 27% |
| Bellville | 10 mi | under 1% | 39% |
| Shelby | 11 mi | 1% | 83% |
| Crestline | 11 mi | under 1% | 71% |
| Galion | 13 mi | under 1% | 76% |
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