729,019 people (2024 Census estimate, +1.6% since 2020)
153 square miles of land · 4,763 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.
5 active community water systems list Denver County in the area they serve, reporting 1,312,794 people served in all (a system that crosses county lines counts its whole population).
| DENVER WATER BOARD surface water · local government · CO0116001 | 1,287,000 served |
| CHERRY CREEK VALLEY WSD buys surface water · local government · CO0116175 | 22,000 served |
| ADVENIR FRENCH QUARTER buys surface water · private · CO0116104 | 3,447 served |
| ASPEN TERRACE MOBILE PARK buys surface water · private · CO0116122 | 200 served |
| LONGVIEW MOBILE HOME PARK buys surface water · private · CO0116484 | 147 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 922 people were held in Denver County's jail, in Vera's latest figure (2025). In 2020 it was about 1,610.
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 Denver County. School taxes are usually the largest part of a property tax bill.
Spent $2 billion — $1.5 billion to run schools, about $17,214 per student, plus $267.8 million on buildings and equipment. Money in: $1.4 billion local (mostly property tax), $395.1 million state, $218 million federal. Long-term debt: $3.1 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: Relatively High compared with other U.S. counties. FEMA estimates natural hazards cost Denver County about $222 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
457 bridges in Denver County: 188 in good condition, 260 fair, and 9 poor (2.0%). “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.
| I 225 ML over GOLDSMITH GULCH · built 1971 | 128,000 vehicles a day |
| RAMP TO I 25 NBND over US 6 ML · built 1989 | 107,500 vehicles a day |
| SH 35 ML over SAND CREEK · built 1962 | 60,000 vehicles a day |
| SPEER BLVD SBND over I 25 ML · built 1952 | 23,671 vehicles a day |
| SH 95 ML NBND over BEAR CREEK · built 1961 | 15,500 vehicles a day |
| SH 95 ML SBND over BEAR CREEK · built 1961 | 15,500 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $1.2 billion of work in Denver County in fiscal 2025, about $1,732 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.
General election: Tuesday, November 3, 2026. Ballots mailed to voters: 2026-10-02 to 2026-10-09. Drop boxes open: 2026-10-12. In-person voting at voter centers: 2026-10-19 to 2026-11-03. Last day to register and still get a ballot by mail: 2026-10-26. Last suggested day to mail your ballot back: 2026-10-26. Election Day: 2026-11-03. Last day to fix a signature problem: 2026-11-12.
Source: Colorado Secretary of State, Oct. 2, 2026 · Colorado Secretary of State, Sept. 23, 2026 · Colorado Secretary of State — Election Day FAQs
The budget, property tax rates, audits, local officials and offices for Denver 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 Denver County built: brayden.ozark@gmail.com.
More of Colorado: the state government and every county in Colorado.
Nearby counties: Broomfield County (16 mi) · Jefferson County (23 mi) · Adams County (30 mi) · Douglas County (30 mi) · Arapahoe County (30 mi) · Gilpin County (35 mi).