The map below shows the political leanings of people in and around Jefferson 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.
Politics Key
Very liberal
Split evenly
Very conservative
Jefferson County tends to be slightly democratic based on voting results in recent elections. Compared to other nearby counties, Jefferson County has more republican voters. Compared to the nation as a whole, Jefferson County leans more democratic.
Highly educated populations with bachelor’s degrees or higher tend to vote for more liberal candidates. In Jefferson County, 44.13% of all adults have earned a bachelor’s degree or higher. Educated women are far less likely to vote for conservatives, and in Jefferson County women make up 50.23% 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 Jefferson County is 41.1, which is older than the national median age of 38.1.
Is Jefferson County a political battleground? Across all types of political contests in Jefferson County, including state, local and presidential elections, races come within five percentage points 37% 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
- Denver County, CO: more liberal voters
- Broomfield County, CO: more liberal voters
- Arapahoe County, CO: more liberal voters
- Adams County, CO: more liberal voters
- Gilpin County, CO: more liberal voters
- Douglas County, CO: more conservative voters
- Clear Creek County, CO: more liberal voters
- Boulder County, CO: more liberal voters
- Weld County, CO: more conservative voters
- Park County, CO: more conservative voters
Counties with Similar Populations
- Utah County, UT: more conservative voters
- Brevard County, FL: more conservative voters
- Anne Arundel County, MD: more conservative voters
- Washington County, OR: more liberal voters
- Union County, NJ: more liberal voters
- Delaware County, PA: more liberal voters
- Bristol County, MA: more conservative voters
- New Castle County, DE: more liberal voters
- Johnson County, KS: more conservative voters
- Summit County, OH: more liberal voters
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