Voter file loaded June 8, 2026 · figures are from that file, held as a fixed record
Madison County, New York has 44,421 active registered voters — 39.0% Republican, 25.4% Democratic, and 27.3% with no party affiliation, as of June 2026.
Party registration
How Madison County voted for president
Election results are public records.
Madison County at a glance.
Madison County had an estimated 67,072 residents in July 2024, the 37th most populous of New York's 62 counties, down 1.4% since the 2020 census. Of those, 54,906 are 18 or older, the voting-age population, and 21.8% are 65 or older. Its 44,421 active registered voters equal about 80.9% of that voting-age population.
It covers 655 square miles of land (102 people per square mile). The largest towns and cities are Sullivan (14,617), Oneida (10,066), Lenox (8,566), Cazenovia (6,656) and Hamilton (6,311). The American Community Survey (2020-2024) puts it at a median age of 42.4, a median household income of $75,499, 29.6% of adults 25 and older holding a bachelor's degree or higher and 78.3% of occupied homes owned by the people living in them.
In 2024, 33,654 votes were cast for president, about 61.3% of the voting-age population; the Democratic ticket took 43.5% and the Republican ticket 56.5%. The two-party margin moved from D+0.9 in 2008 to R+13.0 in 2024.
- Population (2024 estimate)
- 67,072
- Population (2020 census base)
- 68,031
- Voting-age population (18+)
- 54,906
- Active voters per 100 adults
- 80.9
- Residents 65 and older
- 21.8%
- People per square mile
- 102
- Land area
- 655 sq mi
- Median age
- 42.4
- Median household income
- $75,499
- Adults 25+ with a bachelor's degree
- 29.6%
- Owner-occupied homes
- 78.3%
Largest towns and cities
- Sullivan 14,617
- Oneida 10,066
- Lenox 8,566
- Cazenovia 6,656
- Hamilton 6,311
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 43.5% | 56.5% | R+13.0 | 33,654 |
| 2020 | 43.5% | 54.1% | R+10.6 | 34,038 |
| 2016 | 38.5% | 54.4% | R+15.9 | 27,392 |
| 2012 | 49.1% | 48.8% | D+0.3 | 25,865 |
| 2008 | 49.3% | 48.4% | D+0.9 | 29,802 |
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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