Voter file loaded July 20, 2026 · figures are from that file, held as a fixed record
Bannock County, Idaho has 45,701 active registered voters — 52.3% Republican, 12.7% Democratic, and 33.6% with no party affiliation, as of July 2026.
Party registration
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 001 | 801 | 482 | 60.17% |
| 2 | 003 | 826 | 477 | 57.75% |
| 3 | 002 | 850 | 490 | 57.65% |
| 4 | 057 | 663 | 374 | 56.41% |
| 5 | 066 | 1,090 | 607 | 55.69% |
| 6 | 059 | 758 | 417 | 55.01% |
| 7 | 082 | 615 | 325 | 52.85% |
| 8 | 081 | 675 | 354 | 52.44% |
| 9 | 084 | 672 | 348 | 51.79% |
| 10 | 050 | 533 | 276 | 51.78% |
Supervoters are active registered voters who cast a ballot in at least 3 of the last 4 November general elections (2018–2024). Percentages are precinct totals from the official state voter file — no individual voter information is shown. Precincts with fewer than 400 active voters are excluded.
How Bannock County voted for president
Election results are public records.
Bannock County at a glance.
Bannock County had an estimated 91,010 residents in July 2024, the sixth most populous of Idaho's 44 counties, up 4.6% since the 2020 census. Of those, 68,869 are 18 or older, the voting-age population, and 16.0% are 65 or older. Its 45,701 active registered voters equal about 66.4% of that voting-age population.
It covers 1,112 square miles of land (82 people per square mile), and 14.5% of residents live outside any incorporated city or town. The largest cities and towns are Pocatello (part) (58,231), Chubbuck (16,577), Inkom (843), McCammon (824) and Downey (580). The American Community Survey (2020-2024) puts it at a median age of 35.2, a median household income of $66,499, 30.6% of adults 25 and older holding a bachelor's degree or higher and 69.5% of occupied homes owned by the people living in them.
In 2024, 39,971 votes were cast for president, about 58.0% of the voting-age population; the Democratic ticket took 35.8% and the Republican ticket 60.9%. The two-party margin moved from R+13.0 in 2008 to R+25.1 in 2024.
- Population (2024 estimate)
- 91,010
- Population (2020 census base)
- 87,023
- Voting-age population (18+)
- 68,869
- Active voters per 100 adults
- 66.4
- Residents 65 and older
- 16.0%
- People per square mile
- 82
- Living outside incorporated places
- 14.5%
- Land area
- 1,112 sq mi
- Median age
- 35.2
- Median household income
- $66,499
- Adults 25+ with a bachelor's degree
- 30.6%
- Owner-occupied homes
- 69.5%
Largest cities and towns
- Pocatello (part) 58,231
- Chubbuck 16,577
- Inkom 843
- McCammon 824
- Downey 580
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 35.8% | 60.9% | R+25.1 | 39,971 |
| 2020 | 37.1% | 59.0% | R+21.9 | 39,553 |
| 2016 | 31.0% | 51.4% | R+20.4 | 33,405 |
| 2012 | 37.5% | 59.6% | R+22.1 | 35,260 |
| 2008 | 42.1% | 55.1% | R+13.0 | 35,105 |
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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