Boonville, California Demographics & Population 2026

A note before these figures: with a population of 667, Boonville's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Boonville is a small community located in California, within Mendocino County. The total population is 667. It ranks as the 1163rd most populous out of 1,570 Census-designated places in California.

Age Demographics

The median age in Boonville is 60.9 years. This is 61% higher than the state median of 37.9 years. Only 10.8% of residents are under 18, indicating fewer families with children. 24.1% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Boonville is $42,188. This is 57% lower than the state median of $99,122. It is also 48% lower than the national median of $80,734. The poverty rate stands at 16.8%. This is 40% higher than the state poverty rate of 12.0%. The unemployment rate is 4.5%. This is 33% lower than the state rate of 6.6%. The median home value is $661,800. Housing costs are 10% lower than the state median of $734,700. The home-value-to-income ratio of 15.7x suggests that housing affordability is a significant concern for many residents. 58.1% of occupied housing units are owner-occupied. This homeownership rate is 4% higher than the state average of 55.9%.

Race & Ethnicity

The largest racial or ethnic group in Boonville is White (non-Hispanic), making up 54.6% of the population. Hispanic or Latino residents account for 34.2%. The White (non-Hispanic) population is significantly higher than the state average (54.6% vs 33.8%). The Asian population (0.8%) is well below the state average of 15.3%.

Education

24.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 35% lower than the state rate of 37.1%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 81.2%.

Data Sources & Methodology

All demographic data for Boonville, California is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against California state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,570 Census-designated places in California. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.