70,438 people (2024 Census estimate, +1.2% since 2020)
5,950 square miles of land · 12 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.
29 active community water systems list Klamath County in the area they serve, reporting 48,844 people served in all (a system that crosses county lines counts its whole population).
| KLAMATH FALLS WATER DEPT groundwater · local government · OR4100443 | 40,475 served |
| MERRILL WATER DEPARTMENT groundwater · local government · OR4100518 | 907 served |
| CRESCENT WTR SUPPLY & IMPR DIST groundwater · local government · OR4100244 | 900 served |
| MALIN MUNICIPAL WATER groundwater · local government · OR4100504 | 815 served |
| OREGON WATER UTILITIES - MOUNTAIN LAKES groundwater · private · OR4101475 | 770 served |
| CHILOQUIN MUNICIPAL WATER DEPT groundwater · local government · OR4100184 | 730 served |
| FALCON HEIGHTS groundwater · private · OR4101075 | 559 served |
| GILCHRIST WATER SYSTEM LLC groundwater · private · OR4100320 | 440 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 105 people were held in Klamath County's jail, in Vera's latest figure (2023), or 253 per 100,000 residents ages 15–64. In 2018 it was about 139.
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.
2 school districts have their office in Klamath County. School taxes are usually the largest part of a property tax bill.
Spent $119 million — $109 million to run schools, about $15,399 per student, plus $8.8 million on buildings and equipment. Money in: $25.9 million local (mostly property tax), $85.6 million state, $19.3 million federal. Long-term debt: $25.5 million.
Spent $53.9 million — $46.8 million to run schools, about $17,204 per student, plus $5.9 million on buildings and equipment. Money in: $15.4 million local (mostly property tax), $34 million state, $11.5 million federal. Long-term debt: $29 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 Klamath County about $32.5 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Low; social vulnerability: Relatively Moderate.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
248 bridges in Klamath County: 98 in good condition, 139 fair, and 11 poor (4.4%). “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.
| E LANGELL VLY RD over DRAIN DITCH · built 1976 | 446 vehicles a day |
| IVORY PINE ROAD over MERYL CREEK · built 1970 | 434 vehicles a day |
| E LANGELL VLY RD over LOST RIVER · built 1967 | 398 vehicles a day |
| ODELL LK ACCESS RD over TRAPPER CREEK · built 1982 | 130 vehicles a day |
| FLOATING POINT RD over LITTLE DESCHUTES RIVER · built 1980 | 73 vehicles a day |
| ROAD over SOUTH FORK SPRAGUE RIVER · built 1961 | 50 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $89.6 million of work in Klamath County in fiscal 2025, about $1,291 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 Oregon 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 Klamath 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 Klamath County built: brayden.ozark@gmail.com.
More of Oregon: the state government and every county in Oregon.
Nearby counties: Jackson County (55 mi) · Lake County (64 mi) · Douglas County (87 mi) · Deschutes County (88 mi) · Siskiyou County, CA (88 mi) · Modoc County, CA (89 mi).