Voter file loaded June 8, 2026 · figures are from that file, held as a fixed record
Lewis County, New York has 17,689 active registered voters — 54.9% Republican, 18.8% Democratic, and 19.8% with no party affiliation, as of June 2026.
Party registration
How Lewis County voted for president
Election results are public records.
Lewis County at a glance.
Lewis County had an estimated 26,570 residents in July 2024, the 59th most populous of New York's 62 counties, essentially unchanged since the 2020 census. Of those, 20,570 are 18 or older, the voting-age population, and 21.8% are 65 or older. Its 17,689 active registered voters equal about 86.0% of that voting-age population.
It covers 1,276 square miles of land (21 people per square mile). The largest towns and cities are Lowville (4,878), Croghan (3,206), New Bremen (2,781), Denmark (2,634) and Watson (1,790). The American Community Survey (2020-2024) puts it at a median age of 41.9, a median household income of $68,182, 18.6% of adults 25 and older holding a bachelor's degree or higher and 80.2% of occupied homes owned by the people living in them.
In 2024, 12,953 votes were cast for president, about 63.0% of the voting-age population; the Democratic ticket took 27.8% and the Republican ticket 72.2%. The two-party margin moved from R+8.8 in 2008 to R+44.4 in 2024.
- Population (2024 estimate)
- 26,570
- Population (2020 census base)
- 26,582
- Voting-age population (18+)
- 20,570
- Active voters per 100 adults
- 86.0
- Residents 65 and older
- 21.8%
- People per square mile
- 21
- Land area
- 1,276 sq mi
- Median age
- 41.9
- Median household income
- $68,182
- Adults 25+ with a bachelor's degree
- 18.6%
- Owner-occupied homes
- 80.2%
Largest towns and cities
- Lowville 4,878
- Croghan 3,206
- New Bremen 2,781
- Denmark 2,634
- Watson 1,790
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 27.8% | 72.2% | R+44.4 | 12,953 |
| 2020 | 29.5% | 68.7% | R+39.2 | 12,944 |
| 2016 | 27.4% | 67.1% | R+39.7 | 10,312 |
| 2012 | 45.0% | 53.6% | R+8.6 | 9,481 |
| 2008 | 44.8% | 53.6% | R+8.8 | 11,138 |
Sources: U.S. Census Bureau Vintage 2024 population estimates and 2024 Gazetteer; American Community Survey 2020–2024 5-year estimates; certified county presidential returns. Growth, density and turnout are simple arithmetic on those figures.
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