HomePennsylvaniaCentre County
Centre County, Pennsylvania
A shallow water table limits basements on 31% of Centre County's mapped land, a higher share than 50% of US counties. Shrink-swell clay limits houses without basements on 4%.
None of the county is in drought on the October 13, 2026 Drought Monitor map. FEMA's flood data list 40 flood losses here since 2016, 62% of them in buildings with basements. 50% of homes were built before 1980, against 50% nationally; the median home dates from 1980.
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 Centre County
| Expansive clay (limits slab homes) | 3.7% |
| High water table (limits basements) | 30.8% |
| Septic fields very limited | 82.8% |
| Clay swell (LEP, by area) | 2.0% |
| High-swell land (LEP 6%+) | 3.5% |
| Mapped soil | 711,770 acres |
How we count · survey areas PA027 (2025-09-05)
What the numbers mean here
On 31% of Centre 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: 42.06 in, 1.42 in below the 1991-2020 average year of 43.48 in.
USDA rates 83% 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 17 of the last 52 weeks; the most was 90.1% of its area, on the February 17, 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
40 flood losses since 2016, $341,975 paid. The worst year was 2018, with 17. Foundations of the buildings, where recorded: 62% basements, 29% slabs, 10% crawl spaces. Median water depth outside the building: 13 in.
| Year | Flood losses |
|---|---|
| 2016 | 16 |
| 2017 | 1 |
| 2018 | 17 |
| 2019 | 0 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 2 |
| 2025 | 0 |
| 2026 to date | 2 |
Rain
| Average year, 1991-2020 | 43.48 in |
| 12 months to August 2026 | 42.06 in (-1.42) |
| 2025 | 40.29 in (-3.19) |
| Wettest year since 1895 | 2018: 65.46 in |
| Driest year since 1895 | 1930: 27.14 in |
| Days with 1 inch or more, normal at STATE COLLEGE (8 mi away) | 8.7 |
Homes
| Housing units | 66,475 |
| Median year built | 1980 |
| Built before 1980 | 50% |
| Built 2000 or later | 23% |
| Owner-occupied | 62% |
| Median value, owner-occupied | $323,500 |
| Single-family detached | 57% |
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 |
|---|---|---|---|
| Mifflin County, PA | 24 mi | 3% | 34% |
| Clinton County, PA | 25 mi | 1% | 35% |
| Clearfield County, PA | 33 mi | 0% | 37% |
| Huntingdon County, PA | 34 mi | 2% | 31% |
| Juniata County, PA | 35 mi | 1% | 33% |
| Blair County, PA | 37 mi | 2% | 42% |
| Cameron County, PA | 41 mi | 0% | 24% |
| Union County, PA | 42 mi | 1% | 38% |
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