Is Sonoma County the best California county for your business?

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Now you can skip hours of internet research and jump straight to getting answers with our meaningful at-a-glance Demographics Spreadsheet Report. With the most current & most popular demographic data, it's the perfect starting point for your research about Sonoma County and the rest of California.

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Sonoma County Population

All Sonoma County population data above are from the US Census Bureau.

The population data for Sonoma County are from the Census' American Community Survey 2017 5-year estimates and the Census' 2018 Population Estimates. The demographic data for San Diego County, Santa Barbara County, Solano County, and Tulare County are the most current, comparable demographics available from the US Census Bureau, are from the American Community Survey 2017 5-year estimates, and were downloaded on 6 December 2018. Check out our FAQ section for more details.

Sonoma County Demographics Summary

population icon Population

With 499,942 people, Sonoma County is the 17th most populated county in the state of California out of 58 counties. But watch out, Sonoma County, because Solano County with 446,610 people and Tulare County with 465,861 people are right behind you.

race icon Race & Ethnicity

The largest Sonoma County racial/ethnic groups are White (63.8%) followed by Hispanic (26.4%) and Asian (3.9%).

income icon Median Income

In 2017, the median household income of Sonoma County residents was $71,769. Sonoma County households made slightly more than San Diego County households ($70,588) and Santa Barbara County households ($68,023) . However, 10.7% of Sonoma County residents live in poverty.

age icon Median Age

The median age for Sonoma County residents is 41.4 years young.


86% of people CANNOT find the data they're looking for on the US Census Bureau website. Source: Nielsen Norman Group

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"Your starter report certainly saved me a considerable amount of time. I am just too busy to garner this needed data any other way. It truly would have taken hours of an employee's time or my own to get this much information. I was fortunate to find a company that had all the demographics that I needed and at a very reasonable price."
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"My supervisor had assigned me the task of getting population data for the county for our required county education strategic plan. I had some information from Kids Count but need race, gender, age, etc. and the government census site was shutdown. I was so surprised to get a report within seconds and it had lots of charts and graphs that my supervisor liked."
—Jean Hinzman.

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