527,269 people (2024 Census estimate, +4.3% since 2020)
629 square miles of land · 839 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.
25 active community water systems list Clark County in the area they serve, reporting 638,233 people served in all (a system that crosses county lines counts its whole population).
| VANCOUVER CITY OF groundwater · local government · WA5391200 | 373,047 served |
| CLARK PUBLIC UTILITIES groundwater · local government · WA5313333 | 153,526 served |
| CAMAS MUNICIPAL WATER SEWER SYSTEM groundwater · local government · WA5310800 | 31,794 served |
| BATTLE GROUND WATER DEPT CITY OF groundwater · local government · WA5304700 | 30,237 served |
| WASHOUGAL CITY OF groundwater · local government · WA5393400 | 21,441 served |
| RIDGEFIELD PUBLIC WORKS groundwater · local government · WA5372400 | 21,225 served |
| YACOLT groundwater · local government · WA5399000 | 3,034 served |
| AMBOY CLARK PUBLIC UTILITIES groundwater · local government · WA5304625 | 991 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 442 people were held in Clark County's jail, in Vera's latest figure (2022), or 132 per 100,000 residents ages 15–64. In 2017 it was about 751.
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.
9 school districts have their office in Clark County. School taxes are usually the largest part of a property tax bill.
Spent $532.5 million — $404.4 million to run schools, about $17,902 per student, plus $101.5 million on buildings and equipment. Money in: $105.9 million local (mostly property tax), $372.6 million state, $45.8 million federal. Long-term debt: $532.3 million.
Spent $460.6 million — $396 million to run schools, about $17,999 per student, plus $43.9 million on buildings and equipment. Money in: $100 million local (mostly property tax), $290.6 million state, $50.9 million federal. Long-term debt: $386.7 million.
Spent $224.1 million — $203.5 million to run schools, about $16,420 per student, plus $17.5 million on buildings and equipment. Money in: $45.2 million local (mostly property tax), $155.4 million state, $14.3 million federal. Long-term debt: $14.7 million.
Spent $124.3 million — $113.3 million to run schools, about $15,465 per student, plus $2.7 million on buildings and equipment. Money in: $42 million local (mostly property tax), $88 million state, $3.6 million federal. Long-term debt: $136.8 million.
Spent $74.6 million — $56.2 million to run schools, about $14,095 per student, plus $12.2 million on buildings and equipment. Money in: $27 million local (mostly property tax), $46.9 million state, $2.7 million federal. Long-term debt: $100.6 million.
Spent $55 million — $51.2 million to run schools, about $17,867 per student, plus $716,000 on buildings and equipment. Money in: $17.2 million local (mostly property tax), $36.1 million state, $2.7 million federal. Long-term debt: $45.6 million.
Spent $32.2 million — $29.9 million to run schools, about $14,945 per student, plus $306,000 on buildings and equipment. Money in: $8.5 million local (mostly property tax), $24.1 million state, $1.3 million federal. Long-term debt: $26.1 million.
Spent $29.1 million — $25.2 million to run schools, about $14,259 per student, plus $581,000 on buildings and equipment. Money in: $8 million local (mostly property tax), $22 million state, $1.3 million federal. Long-term debt: $43.1 million.
And 1 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 Moderate compared with other U.S. counties. FEMA estimates natural hazards cost Clark County about $157.5 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.
219 bridges in Clark County: 118 in good condition, 91 fair, and 10 poor (4.6%). “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.
| I-5 over E FORK LEWIS RIVER · built 1939 | 41,939 vehicles a day |
| I-5 over LEWIS RIVER · built 1940 | 41,939 vehicles a day |
| SR 500 over LACAMAS LAKE · built 1930 | 11,155 vehicles a day |
| SR 500 over HJF CANAL · built 1915 | 7,516 vehicles a day |
| SR 14 over BN RR · built 1972 | 6,000 vehicles a day |
| 172nd Ave over China Ditch · built 2009 | 1,790 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $162.8 million of work in Clark County in fiscal 2025, about $324 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 Washington 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 Clark 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 Clark County built: brayden.ozark@gmail.com.
More of Washington: the state government and every county in Washington.
Nearby counties: Multnomah County, OR (16 mi) · Cowlitz County (31 mi) · Columbia County, OR (31 mi) · Skamania County (31 mi) · Washington County, OR (33 mi) · Hood River County, OR (44 mi).