1,573,916 people (2024 Census estimate, −1.7% since 2020)
134 square miles of land · 11,717 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.
1 active community water system list Philadelphia County in the area they serve, reporting 1,600,000 people served in all (a system that crosses county lines counts its whole population).
| PHILADELPHIA WATER DEPARTMENT surface water · local government · PA1510001 | 1,600,000 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 4,653 people were held in Philadelphia County's jail, in Vera's latest figure (2024), or 446 per 100,000 residents ages 15–64. In 2019 it was about 4,670.
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 Philadelphia County. School taxes are usually the largest part of a property tax bill.
Spent $4.4 billion — $3.3 billion to run schools, about $27,950 per student, plus $290 million on buildings and equipment. Money in: $1.9 billion local (mostly property tax), $2 billion state, $618.6 million federal. Long-term debt: $3.3 billion.
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: Very High compared with other U.S. counties. FEMA estimates natural hazards cost Philadelphia County about $667.1 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Moderate; social vulnerability: Very High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
587 bridges in Philadelphia County: 144 in good condition, 369 fair, and 74 poor (12.6%). “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.
| INTERSTATE 95 over TACONY ST.AND BRIDGE ST. · built 1967 | 280,088 vehicles a day |
| INTERSTATE 95 over FRALEY STREET · built 1967 | 280,088 vehicles a day |
| INTERSTATE 95 over EARTH FILL & SEWER ACCES · built 1968 | 225,137 vehicles a day |
| DELAWARE EXPWAY. over VENANGO STREET · built 1965 | 177,086 vehicles a day |
| DELAWARE EXPWAY. over WHEATSHEAF LANE · built 1965 | 177,086 vehicles a day |
| INTERSTATE 95 N.B. over FAIRMOUNT AVENUE · built 1975 | 80,788 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $2.3 billion of work in Philadelphia County in fiscal 2025, about $1,438 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 Pennsylvania 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 Philadelphia 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 Philadelphia County built: brayden.ozark@gmail.com.
More of Pennsylvania: the state government and every county in Pennsylvania.
Nearby counties: Delaware County (15 mi) · Camden County, NJ (17 mi) · Montgomery County (19 mi) · Gloucester County, NJ (20 mi) · Bucks County (23 mi) · Burlington County, NJ (27 mi).