The map below shows the political leanings of people in and around San Mateo County. Darker red areas have relatively more Republican voters, dark blue areas vote mostly for Democrats compared to other counties in California, and areas in paler shades are where the vote tends to be split more evenly between parties.
San Mateo County tends to be very democratic based on voting results in recent elections. Compared to other nearby counties, San Mateo County has more democratic voters. Compared to the nation as a whole, San Mateo County leans more democratic.
Highly educated populations with bachelor’s degrees or higher tend to vote for more liberal candidates. In San Mateo County, 54.73% of all adults have earned a bachelor’s degree or higher. Educated women are far less likely to vote for conservatives, and in San Mateo County women make up 50.55% 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 Mateo County is 41.7, which is older than the national median age of 38.1.
Is San Mateo County a political battleground? Across all types of political contests in San Mateo County, including state, local and presidential elections, races come within five percentage points 0% of the time.
Note: Federal, local, and California elections are weighed based on the recency of the election and the importance most voters assign to each seat.
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