26,570 people (2024 Census estimate, +0.0% since 2020)
1,276 square miles of land · 21 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.
15 active community water systems list Lewis County in the area they serve, reporting 11,492 people served in all (a system that crosses county lines counts its whole population).
| LOWVILLE VILLAGE surface water · local government · NY2402365 | 4,000 served |
| CROGHAN VILLAGE groundwater · local government · NY2402362 | 900 served |
| COPENHAGEN VILLAGE groundwater (surface-influenced) · local government · NY2402361 | 850 served |
| LYONS FALLS VILLAGE groundwater · local government · NY2402366 | 850 served |
| PORT LEYDEN VILLAGE groundwater · local government · NY2402368 | 820 served |
| BEAVER FALLS WATER DISTRICT buys groundwater · local government · NY2402358 | 782 served |
| HARRISVILLE (DIANA WD 1) groundwater · local government · NY2402364 | 700 served |
| TURIN VILLAGE groundwater · local government · NY2402369 | 350 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 29 people were held in Lewis County's jail, in Vera's latest figure (2026). In 2021 it was about 22.
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.
5 school districts have their office in Lewis County. School taxes are usually the largest part of a property tax bill.
Spent $32.9 million — $27.2 million to run schools, about $20,877 per student, plus $1.9 million on buildings and equipment. Money in: $5.8 million local (mostly property tax), $21.6 million state, $3.3 million federal. Long-term debt: $13.3 million.
Spent $33.2 million — $26.1 million to run schools, about $24,947 per student, plus $2.1 million on buildings and equipment. Money in: $9.7 million local (mostly property tax), $19.5 million state, $3.1 million federal. Long-term debt: $39.3 million.
Spent $19.8 million — $17.7 million to run schools, about $20,087 per student, plus $645,000 on buildings and equipment. Money in: $6.1 million local (mostly property tax), $12.4 million state, $2.4 million federal. Long-term debt: $17 million.
Spent $13.1 million — $11.9 million to run schools, about $24,889 per student, plus $435,000 on buildings and equipment. Money in: $2 million local (mostly property tax), $9.5 million state, $1.6 million federal. Long-term debt: $8.8 million.
Spent $13.2 million — $11.6 million to run schools, about $35,506 per student, plus $733,000 on buildings and equipment. Money in: $4.1 million local (mostly property tax), $6.7 million state, $1.6 million federal. Long-term debt: $6.5 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: Very Low compared with other U.S. counties. FEMA estimates natural hazards cost Lewis County about $9.1 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Relatively Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
169 bridges in Lewis County: 59 in good condition, 84 fair, and 26 poor (15.4%). “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.
| RTE 12 over MILL CREEK · built 1927 | 2,290 vehicles a day |
| RTE 26 over ROARING BROOK · built 1978 | 1,961 vehicles a day |
| RTE 410 over BLACK RIVER · built 1955 | 1,400 vehicles a day |
| RIDGE ROAD over NEGRO CREEK · built 1964 | 387 vehicles a day |
| SCHIBLEY ROAD over MOOSE RIVER · built 1942 | 250 vehicles a day |
| SCHIBLEY ROAD over MOOSE RIVER · built 1964 | 250 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $14.5 million of work in Lewis County in fiscal 2025, about $545 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 New York 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 Lewis 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 Lewis County built: brayden.ozark@gmail.com.
More of New York: the state government and every county in New York.
Nearby counties: Herkimer County (33 mi) · Jefferson County (34 mi) · Oneida County (37 mi) · Oswego County (44 mi) · Hamilton County (48 mi) · St. Lawrence County (52 mi).