HomeVirginiaKing William County
King William County, Virginia
A shallow water table limits basements on 63% of King William County's mapped land, a higher share than 77% of US counties. Shrink-swell clay limits houses without basements on 2%.
None of the county is in drought on the October 13, 2026 Drought Monitor map. FEMA's flood data list 2 flood losses here since 2016. 28% of homes were built before 1980, against 50% nationally; the median home dates from 1996.
Data as of October 13, 2026 · sources
expansive clay: shrink-swell limits slab homes
high water table: limits basements
in drought, October 13, 2026
of homes built before 1980
Soil under King William County
| Expansive clay (limits slab homes) | 1.9% |
| High water table (limits basements) | 63.4% |
| Septic fields very limited | 84.7% |
| Clay swell (LEP, by area) | 2.7% |
| High-swell land (LEP 6%+) | 1.9% |
| Mapped soil | 182,800 acres |
| Soil series | Share here | Series nationally: high water table |
|---|---|---|
| Slagle | 11% | n/a |
| Remlik | 10% | n/a |
| Nevarc | 8% | n/a |
| Emporia | 8% | n/a |
| Kempsville | 7% | n/a |
| Altavista | 5% | n/a |
How we count · survey areas VA101 (2025-09-05)
What the numbers mean here
On 63% of King William County's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
Rain over the 12 months to August 2026: 39.70 in, 6.82 in below the 1991-2020 average year of 46.52 in.
USDA rates 85% of the land very limited for septic absorption fields.
Drought
0% of the county is in drought (D1 or worse) on the October 13, 2026 map. Part of the county was in drought in 29 of the last 52 weeks; the most was 100% of its area, in 15 weeks, most recently on the July 14, 2026 map.
| Category, October 13, 2026 | Share of county |
|---|---|
| D0 abnormally dry or worse | 0% |
| D1 moderate drought or worse | 0% |
| D2 severe or worse | 0% |
| D3 extreme or worse | 0% |
| D4 exceptional | 0% |
Flood losses since 2016
2 flood losses since 2016, $22,284 paid. The worst year was 2025, with 1.
| Year | Flood losses |
|---|---|
| 2016 | 0 |
| 2017 | 1 |
| 2018 | 0 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 0 |
| 2025 | 1 |
| 2026 to date | 0 |
Rain
| Average year, 1991-2020 | 46.52 in |
| 12 months to August 2026 | 39.70 in (-6.82) |
| 2025 | 47.24 in (+0.72) |
| Wettest year since 1895 | 2018: 66.47 in |
| Driest year since 1895 | 1930: 24.41 in |
| Days with 1 inch or more, normal at WALKERTON 2 NW (4 mi away) | 12.6 |
Homes
| Housing units | 7,730 |
| Median year built | 1996 |
| Built before 1980 | 28% |
| Built 2000 or later | 43% |
| Owner-occupied | 89% |
| Median value, owner-occupied | $315,700 |
| Single-family detached | 91% |
What repairs cost
Published ranges from cost guides, not quotes. More sources, and where they disagree.
Nearby counties
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| King and Queen County, VA | 10 mi | 2% | 77% |
| New Kent County, VA | 15 mi | 3% | 66% |
| Essex County, VA | 18 mi | 1% | 45% |
| Henrico County, VA | 22 mi | 7% | 54% |
| Hanover County, VA | 22 mi | 3% | 43% |
| Charles City County, VA | 24 mi | 18% | 71% |
| Richmond city, VA | 24 mi | 0% | 21% |
| Richmond County, VA | 25 mi | 6% | 42% |
Sources: USDA SSURGO (September 5, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status