879,190 people (2024 Census estimate, +2.6% since 2020)
483 square miles of land · 1,821 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.
38 active community water systems list Montgomery County in the area they serve, reporting 1,233,724 people served in all (a system that crosses county lines counts its whole population).
| AQUA PA MAIN SYSTEM surface water · private · PA1460073 | 822,600 served |
| NORTH PENN WATER AUTHORITY buys surface water · local government · PA1460034 | 91,941 served |
| PA AMERICAN NORRISTOWN surface water · private · PA1460046 | 88,885 served |
| NORTH WALES WATER AUTHORITY surface water · local government · PA1460048 | 72,496 served |
| POTTSTOWN BOROUGH WATER AUTH surface water · local government · PA1460037 | 36,000 served |
| HORSHAM WATER&SEWER AUTHORITY buys surface water · local government · PA1460033 | 26,000 served |
| AMBLER BORO WATER DEPT surface water · local government · PA1460020 | 20,000 served |
| AQUA PA HATBORO buys surface water · private · PA1460028 | 12,901 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 939 people were held in Montgomery County's jail, in Vera's latest figure (2024), or 170 per 100,000 residents ages 15–64. In 2019 it was about 1,579.
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.
21 school districts have their office in Montgomery County. School taxes are usually the largest part of a property tax bill.
Spent $290.2 million — $263.9 million to run schools, about $20,435 per student, plus $12.2 million on buildings and equipment. Money in: $241.6 million local (mostly property tax), $62.3 million state, $10.9 million federal. Long-term debt: $70 million.
Spent $181.8 million — $165.6 million to run schools, about $19,386 per student, plus $4.7 million on buildings and equipment. Money in: $135.6 million local (mostly property tax), $43.3 million state, $6.5 million federal. Long-term debt: $145.6 million.
Spent $302.5 million — $274.1 million to run schools, about $32,162 per student, plus $13.3 million on buildings and equipment. Money in: $261.6 million local (mostly property tax), $46.5 million state, $4.5 million federal. Long-term debt: $221.7 million.
Spent $193.6 million — $168.9 million to run schools, about $21,242 per student, plus $14.9 million on buildings and equipment. Money in: $147.4 million local (mostly property tax), $40.9 million state, $4.1 million federal. Long-term debt: $52.8 million.
Spent $178.5 million — $160.9 million to run schools, about $20,611 per student, plus $5.9 million on buildings and equipment. Money in: $126 million local (mostly property tax), $51.7 million state, $28.3 million federal. Long-term debt: $87.6 million.
Spent $163.5 million — $130 million to run schools, about $21,067 per student, plus $24.4 million on buildings and equipment. Money in: $108.5 million local (mostly property tax), $34.3 million state, $3.7 million federal. Long-term debt: $68.6 million.
Spent $147.8 million — $129.2 million to run schools, about $23,865 per student, plus $6.6 million on buildings and equipment. Money in: $126.5 million local (mostly property tax), $26 million state, $2.7 million federal. Long-term debt: $154.2 million.
Spent $124.3 million — $112.9 million to run schools, about $22,178 per student, plus $6.3 million on buildings and equipment. Money in: $98.4 million local (mostly property tax), $23.4 million state, $2.6 million federal. Long-term debt: $28.7 million.
And 13 more.
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 High compared with other U.S. counties. FEMA estimates natural hazards cost Montgomery County about $296.7 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
830 bridges in Montgomery County: 265 in good condition, 469 fair, and 96 poor (11.6%). “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.
| SCHUYLKILL EXPWAY. over WAVERLY ROAD(T669) · built 1951 | 89,047 vehicles a day |
| SCHUYLKILL EXPWAY. over MATSONFORD ROAD · built 1950 | 66,436 vehicles a day |
| POTTSTOWN EXPWAY over SANATOGA RD SANATOGA CR · built 1965 | 59,904 vehicles a day |
| WB COUNTY LINE EXP over NORTH GULPH ROAD · built 1966 | 43,626 vehicles a day |
| EB COUNTY LINE EXP over NORTH GULPH ROAD · built 1965 | 42,360 vehicles a day |
| RIDGE PIKE over NORFOLK SOUTHERN RR · built 1936 | 36,517 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $170.9 million of work in Montgomery County in fiscal 2025, about $200 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 Montgomery 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 Montgomery County built: brayden.ozark@gmail.com.
More of Pennsylvania: the state government and every county in Pennsylvania.
Nearby counties: Bucks County (16 mi) · Philadelphia County (19 mi) · Delaware County (20 mi) · Chester County (26 mi) · Lehigh County (30 mi) · Berks County (33 mi).