The map below shows the political leanings of people in and around San Bernardino County. Darker red areas have almost entirely Republican voters, dark blue areas vote mostly for Democrats, and areas in lighter shades or in light purple are areas where the vote is usually split between parties.

San Bernardino County, CA map of Democratic vs. Republican areas

Politics Key

Very liberal
Split evenly
Very conservative


San Bernardino County tends to be slightly democratic based on voting results in recent elections. Compared to other nearby counties, San Bernardino County has more democratic voters. Compared to the nation as a whole, San Bernardino County leans more democratic.

Highly educated populations with bachelor’s degrees or higher tend to vote for more liberal candidates. In San Bernardino County, 19.57% of all adults have earned a bachelor’s degree or higher. Educated women are far less likely to vote for conservatives, and in San Bernardino County women make up 50.25% of the population.

Older Americans tend to vote more conservatively. Members of the Boomer and Silent generations (born 1928-1964) more often vote for republicans while GenX, Millennials (born 1965-1996) and younger generations consistently support democrats. The median age in San Bernardino County is 34.1, which is younger than the national median age of 38.1.

Is San Bernardino County a political battleground? Across all types of political contests in San Bernardino County, including state, local and presidential elections, races come within five percentage points 35% of the time.

Note: Federal, local, and state elections are weighed based on the recency of the election and the importance most voters assign to each seat.

Nearby Counties

Counties with Similar Populations

Home Services

No other site shows detail at this level for free. We are able to keep this site free by receiving a small commission from the referring links below if you book, rent, or request a lead at no cost to you. Please share or cite this page if you aren't able to otherwise support our work.

Map interface © Mapbox © OpenStreetMap Map data and content © bestneighborhood