Contra Costa County voter turnout
How many people does one vote speak for in Contra Costa County, California?
Only 49% of eligible citizens in Contra Costa County voted in the 2022 midterm.
2024 presidential: 67% turnout · 1.5 people per vote
Turnout in Contra Costa County
In the November 2022 midterm, 388,503 of Contra Costa County’s 792,622 eligible citizens voted: 49.0% turnout. That’s 7.1 points higher than California overall (41.9%) and 3.0 points higher than the national rate (46.0%). With 404,119 eligible citizens sitting it out, each ballot cast spoke for 2.0 people.
In the 2024 presidential election, turnout was 66.7%, so each ballot spoke for 1.5 people. Midterm turnout here ran 17.7 points below the presidential year, which is why every vote in a midterm like 2026 carries extra weight.
Contra Costa County ranks #37 of 58 counties in California for vote power (#1 has the lowest turnout, so each vote there counts for the most people).
Election Day is Tuesday, November 3, 2026 — register or check your status at vote.org.
| County | Rank | Turnout | Per vote |
|---|---|---|---|
| Santa Barbara County | #34 | 46.9% | 2.1 |
| Mono County | #35 | 47.5% | 2.1 |
| Alpine County | #36 | 48.6% | 2.1 |
| Contra Costa County | #37 | 49.0% | 2.0 |
| San Francisco County | #38 | 49.0% | 2.0 |
| Ventura County | #39 | 49.0% | 2.0 |
| Shasta County | #40 | 49.6% | 2.0 |
See all 58 California counties ranked →