136,287 people (2024 Census estimate, +11.1% since 2020)
321 square miles of land · 424 people per square mile
“Highest” and “lowest” are just order, not grades: a high rank for poverty or hazard losses means more of it. Each figure's source is in its section below.
13 active community water systems list Berkeley County in the area they serve, reporting 94,050 people served in all (a system that crosses county lines counts its whole population).
| BERKELEY COUNTY PSWD-POTOMAC RIVER surface water · local government · WV3300218 | 69,372 served |
| MARTINSBURG CITY OF groundwater (surface-influenced) · local government · WV3300212 | 16,250 served |
| WOODS HOME OWNERS ASSOCIATION 2 groundwater · private · WV3300237 | 3,300 served |
| VA MEDICAL CENTER groundwater (surface-influenced) · federal · WV3300227 | 2,175 served |
| BERKELEY CO PSWD-GLENWOOD FOREST groundwater · local government · WV3300209 | 1,102 served |
| ROCKY GLEN MANUFACTURED HOUSING COMMUNIT groundwater · private · WV3300231 | 861 served |
| G AND E MHP groundwater (surface-influenced) · private · WV3300201 | 235 served |
| WVAW - VALLEY WATER AND SEWER-DEERWOOD groundwater · private · WV3300230 | 219 served |
Source: U.S. EPA Safe Drinking Water Information System (SDWIS), active community systems, . Look up any system's violations and test results with EPA's search using its ID.
About 290 people were held in Berkeley County's jail, in Vera's latest figure (2024), or 334 per 100,000 residents ages 15–64. In 2019 it was about 296.
Source: Vera Institute of Justice, Incarceration Trends (built from federal Bureau of Justice Statistics jail surveys). Counties without their own jail, or that share one, may show no figure.
1 school district has its office in Berkeley County. School taxes are usually the largest part of a property tax bill.
Spent $266.2 million — $256.5 million to run schools, about $12,918 per student, plus $5.9 million on buildings and equipment. Money in: $98 million local (mostly property tax), $143.8 million state, $39.1 million federal. Long-term debt: $11.6 million.
Source: U.S. Census Bureau, 2023 Annual Survey of School System Finances. Districts are listed by the county of their main office; some serve neighboring counties too.
Source: County Health Rankings & Roadmaps 2025 (University of Wisconsin Population Health Institute), which gathers federal data (CDC, Census, and others); measures cover different recent years. Blank lines aren't reported for small counties.
Overall risk: Relatively Low compared with other U.S. counties. FEMA estimates natural hazards cost Berkeley County about $35.2 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Moderate; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
117 bridges in Berkeley County: 39 in good condition, 72 fair, and 6 poor (5.1%). “Poor” means a main part — the deck, the beams, or the supports — is rated 4 or lower on the federal 0–9 scale. It doesn't mean unsafe to drive; unsafe bridges are closed.
| CR 26 SLS over MILL CREEK · built 1987 | 4,700 vehicles a day |
| OLD MILL ROAD over TUSCARORA CREEK · built 1950 | 3,000 vehicles a day |
| CR 19 SLS over BUZZARD RUN · built 1975 | 1,100 vehicles a day |
| CR 07 SLS over ELK BRANCH · built 1976 | 750 vehicles a day |
| CR 23 SLS over TILLHANCE CREEK · built 1936 | 600 vehicles a day |
| CR 24/3 SLS over MILL CREEK · built 1926 | 80 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $49.5 million of work in Berkeley County in fiscal 2025, about $406 per resident — to the county, cities, schools, hospitals, nonprofits and others.
Source: USAspending.gov, grants by place of performance, fiscal 2025 (Oct. 2024 to Sept. 2025). Search it by county to see each award.
From Grants.gov: posted grants listing county governments as eligible, soonest deadline first; research-only and overseas programs left out; list updated 2026-10-13, refreshed weekly. 62 are open in all. Cities, towns, school districts and nonprofits have their own lists there.
Registration deadlines, early voting and polling places for West Virginia are on the federal site vote.gov, which links to the state's official election office.
The budget, property tax rates, audits, local officials and offices for Berkeley County come from the county's own records, which we haven't gathered — not gathered, never hidden. See what a full county site looks like, or ask to have Berkeley County built: brayden.ozark@gmail.com.
More of West Virginia: the state government and every county in West Virginia.
Nearby counties: Jefferson County (13 mi) · Morgan County (14 mi) · Washington County, MD (16 mi) · Winchester city, VA (20 mi) · Frederick County, VA (21 mi) · Clarke County, VA (23 mi).