Mill Valley city, California Demographics & Population 2026

Population Overview

Mill Valley city is a small city located in California. The total population is 14,064. It ranks as the 418th most populous out of 1,577 cities and towns in California.

Age Demographics

The median age in Mill Valley city is 47.2 years. This is 26% higher than the state median of 37.6 years.

Economy, Income & Housing

The median household income in Mill Valley city is $208,466. This is 116% higher than the state median of $96,334. Compared to the national median of $78,538, household income here is 165% higher. The poverty rate stands at 5.0%. This is 58% lower than the state poverty rate of 12.0%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 8.4%. This is 31% higher than the state rate of 6.4%. The median home value is $2,000,001. Housing costs are 188% higher than the state median of $695,400. The home-value-to-income ratio of 9.6x suggests that housing affordability is a significant concern for many residents. 66.1% of occupied housing units are owner-occupied. This homeownership rate is 19% higher than the state average of 55.8%.

Race & Ethnicity

The largest racial or ethnic group in Mill Valley city is White (non-Hispanic), making up 82.0% of the population. Asian residents account for 7.2%. The White (non-Hispanic) population is significantly higher than the state average (82.0% vs 34.6%). The Black or African American population (0.7%) is well below the state average of 5.3%. The Hispanic or Latino population (4.0%) is well below the state average of 39.8%. The Asian population (7.2%) is well below the state average of 15.0%.

Education

77.1% of residents aged 25 and older hold a bachelor's degree or higher. This places Mill Valley city in the top 10% of all cities in the state for educational attainment. This is 111% higher than the state rate of 36.5%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 98.9%. Notably, 37.4% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Mill Valley city, California is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against California state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,577 Census-designated places in California. For official data, visit data.census.gov.