Sonoma County Supervisorial District 3 Demographics

The following demographic and economic information pertains to Sonoma County Supervisorial District 3, which comprises central Santa Rosa and most of Rohnert Park.

Demographics

• Population: 107,896 people
• Median Age: 36.8 years old
• Hispanic Population: 44.3%

Educational Attainment Breakdown

• 16.9% with less than a High School Diploma
• 23.0% with a High School Diploma
• 20.5% with some college
• 10.4% with an associate’s degree
• 19.9% with a bachelor’s degree
• 9.3% with a postgraduate degree

Age Range Distribution

• 10.8% ages 0–9 years old
• 19.9% ages 10–24 years old
• 16.6% ages 25–34 years old
• 14.7% ages 35–44 years old
• 12.0% ages 45–54 years old
• 10.9% ages 55–64 years old
• 15.0% ages 65+ years old

Income

• Median Household Income: $94,797
• Expenditure Index: 98

Household Income Distribution

• 10.6% with <$25,000 annually
• 12.9% with $25,000–$49,999 annually
• 15.0% with $50,000–$74,999 annually
• 13.9% with $75,000–$99,999 annually
• 21.4% with $100,000–$149,999 annually
• 26.3% with $150,000+ annually

Business and Workforce

• Total Employees: 40,156
• Unemployment Rate: 6.3%
• Total Businesses: 4,765

Commute Time to Work Distribution

• 49.1% with 0–19 minutes
• 34.9% with 20–39 minutes
• 8.6% with 40–59 minutes
• 7.4% with 60+ minutes

Top Industries by Share of Total Employment

• Healthcare (16.3%)
• Retail Trade (11.9%)
• Construction (8.9%)
• Accommodation/Food Services (7.9%)
• Manufacturing (7.9%)
• Professional/Technical Services (7.3%)
• Educational Services (6.9%)

Housing

• Homeownership Rate: 48.1%
• Renter Occupancy Rate: 51.9%
• Median Home Value: $678,381
• Median Monthly Rent: $2,112
• Housing Cost-to-Income Ratio: 42.1%

*Compares average local expenditures to U.S. levels: <100 indicates less than the national average and >100 indicates greater than the national average.

Esri 2026 estimate of the percent of income for mortgage; This is the median percentage of household income dedicated to mortgage payments for a home priced at the median value.