374,574 people (2024 Census estimate, +4.1% since 2020)
2,596 square miles of land · 144 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.
47 active community water systems list Larimer County in the area they serve, reporting 488,149 people served in all (a system that crosses county lines counts its whole population).
| FT COLLINS CITY OF surface water · local government · CO0135291 | 179,901 served |
| LOVELAND CITY OF surface water · local government · CO0135485 | 91,077 served |
| FT COLLINS LOVELAND WD buys surface water · local government · CO0135292 | 63,532 served |
| EAST LARIMER COUNTY WD buys surface water · local government · CO0135233 | 27,944 served |
| CSU MAIN AND WEST HOUSING CAMPUS buys surface water · local government · CO0235184 | 27,375 served |
| LITTLE THOMPSON WD buys surface water · local government · CO0135477 | 25,654 served |
| ESTES PARK TOWN OF surface water · local government · CO0135257 | 16,722 served |
| BERTHOUD TOWN OF surface water · local government · CO0135138 | 14,211 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 506 people were held in Larimer County's jail, in Vera's latest figure (2025). In 2020 it was about 454.
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.
3 school districts have their office in Larimer County. School taxes are usually the largest part of a property tax bill.
Spent $501.7 million — $449.5 million to run schools, about $14,986 per student, plus $28 million on buildings and equipment. Money in: $275.4 million local (mostly property tax), $186.1 million state, $26.9 million federal. Long-term debt: $428.1 million.
Spent $269.9 million — $221.4 million to run schools, about $14,678 per student, plus $33.9 million on buildings and equipment. Money in: $148.7 million local (mostly property tax), $87.1 million state, $21.8 million federal. Long-term debt: $209.1 million.
Spent $18.2 million — $17.3 million to run schools, about $17,084 per student, plus $407,000 on buildings and equipment. Money in: $16.3 million local (mostly property tax), $1.7 million state, $1.6 million federal. Long-term debt: $14.1 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 Moderate compared with other U.S. counties. FEMA estimates natural hazards cost Larimer County about $126.5 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.
562 bridges in Larimer County: 275 in good condition, 275 fair, and 12 poor (2.1%). “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.
| SH 392 ML over CACHE LA POUDRE RIVER · built 1959 | 19,000 vehicles a day |
| US 34 ML WBND over BARNES INLET CANAL · built 1933 | 12,500 vehicles a day |
| Lincoln Avenue over Dry Creek · built 1948 | 6,817 vehicles a day |
| East Vine Drive over Lake Canal · built 1950 | 6,025 vehicles a day |
| US 34 ML over DEVILS GULCH · built 1937 | 6,000 vehicles a day |
| CR 17 (N Shields S over Terry Lake Inlet Canal · built 1962 | 4,595 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $584.5 million of work in Larimer County in fiscal 2025, about $1,628 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 Larimer 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 Larimer County built: brayden.ozark@gmail.com.
More of Colorado: the state government and every county in Colorado.
Nearby counties: Boulder County (39 mi) · Jackson County (44 mi) · Grand County (50 mi) · Broomfield County (54 mi) · Gilpin County (55 mi) · Weld County (58 mi).