Voter file loaded June 8, 2026 · figures are from that file, held as a fixed record
Herkimer County, New York has 40,038 active registered voters — 48.1% Republican, 21.5% Democratic, and 23.3% with no party affiliation, as of June 2026.
Party registration
How Herkimer County voted for president
Election results are public records.
Herkimer County at a glance.
Herkimer County had an estimated 59,585 residents in July 2024, the 43rd most populous of New York's 62 counties, down 0.9% since the 2020 census. Of those, 47,669 are 18 or older, the voting-age population, and 23.2% are 65 or older. Its 40,038 active registered voters equal about 84.0% of that voting-age population.
It covers 1,411 square miles of land (42 people per square mile). The largest towns and cities are German Flatts (12,077), Herkimer (9,508), Frankfort (6,889), Little Falls (4,527) and Schuyler (3,260). The American Community Survey (2020-2024) puts it at a median age of 44.8, a median household income of $68,515, 22.7% of adults 25 and older holding a bachelor's degree or higher and 76.6% of occupied homes owned by the people living in them.
In 2024, 28,667 votes were cast for president, about 60.1% of the voting-age population; the Democratic ticket took 31.8% and the Republican ticket 68.2%. The two-party margin moved from R+9.3 in 2008 to R+36.4 in 2024.
- Population (2024 estimate)
- 59,585
- Population (2020 census base)
- 60,140
- Voting-age population (18+)
- 47,669
- Active voters per 100 adults
- 84.0
- Residents 65 and older
- 23.2%
- People per square mile
- 42
- Land area
- 1,411 sq mi
- Median age
- 44.8
- Median household income
- $68,515
- Adults 25+ with a bachelor's degree
- 22.7%
- Owner-occupied homes
- 76.6%
Largest towns and cities
- German Flatts 12,077
- Herkimer 9,508
- Frankfort 6,889
- Little Falls 4,527
- Schuyler 3,260
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 31.8% | 68.2% | R+36.4 | 28,667 |
| 2020 | 33.9% | 64.4% | R+30.5 | 29,319 |
| 2016 | 30.0% | 64.6% | R+34.6 | 24,261 |
| 2012 | 44.8% | 53.2% | R+8.4 | 23,290 |
| 2008 | 44.5% | 53.8% | R+9.3 | 27,184 |
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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