Representative Mike Thompson, Democratic from California

Mike Thompson

California's 4th congressional district

CA-4 Midterms Intelligence

Mike Thompson’s 27-year hold on this North Bay seat rests on a classic California Democratic coalition: affluent, college-leaning communities, a large Latino population, and voters who prize environmental stewardship alongside economic stability. The district is safely blue at D+33, but not ideologically uniform; its defining tension is between wine-country/professional-class liberalism and agricultural, cost-sensitive local interests. With median income at $97,540 but home values at $679,600, voters are prosperous on paper and squeezed in practice—especially on housing, insurance, and utility costs.

For advocates, the opening is pragmatic progressivism, not movement rhetoric. Thompson’s Ways and Means perch makes tax, health, and conservation arguments especially potent when tied to affordability, wildfire resilience, and protecting local agriculture. A district that is 32.7% Hispanic and just 5.0% uninsured will respond to messages about preserving coverage, lowering household costs, and defending public lands without threatening jobs or farm viability. The strategic play is coalition work: environmental and health frames win, but only when paired with economic ballast.

Representative Mike Thompson represents California's 4th congressional district, serving 764,257 constituents. The district has an estimated median household income of $97,540 and an unemployment rate of 6.5%.

Economic & Demographic Snapshot

764,257Population
↓ 88
$97,540Median Incomenat'l $37,585
↑ $5,584
6.5%Unemploymentnat'l 3.5%
↑ 0.7%
6.7%Poverty Ratenat'l 12.4%
↑ 0.5%
61.2%Homeownershipnat'l 65.5%
→ no change
$2,045Median Rentnat'l $1,163
↑ $163
1.5%Public Transitnat'l 5%
→ no change
25.7 minMean Commutenat'l 26.4 min
↓ 0.3 min

Data sourced from U.S. Census Bureau ACS 5-Year Estimates (2017-2021 vs. 2019-2023). All figures are statistical estimates with 90% confidence level.

California District 4 Demographics

Median Age 39.3 (vs 38.5) · Homeownership 61.2% (vs 65.5%) · Bachelor’s+ 36.2% (vs 33.7%) · Poverty 6.7% (vs 12.4%) · Income $97,540 (vs $37,585)

Key Issues for This District
Immigration policyEducation accessRent burden

Age Distribution

Near the national median age (39.3 vs 38.5 nationally). The largest age cohort is 20–29 at 14.5%.

Race & Ethnicity

A majority-minority district. White residents are the largest group at 56.2%. Also significant: Hispanic (32.7%).

* Hispanic includes respondents of any race. Racial categories include both Hispanic and non-Hispanic individuals.

Education

36.2% hold a bachelor’s degree or higher, above the 33.7% national average. 12.2% of residents lack a high school diploma.

Income Distribution

Median household income is $97,540, well above the $37,585 national median.

Housing

Homeownership at 61.2% (vs 65.5% nationally). Median rent is $2,045. Median home value is $679,600.

How People Get to Work

69.7% drive alone. Average commute is 25.7 minutes.

Source: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates
Data represents 5-year statistical estimates for increased reliability.

California District 4 FAQ

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