High Quality Content by WIKIPEDIA articles! Healdsburg is a city located in Sonoma County, California, in the United States. As of the 2010 United States Census, the city had a population of 11,254. Healdsburg is a commercial center for northern Sonoma County as well as being one of Northern California`s wine capitals: three of the most important wine-producing regions (the Russian River, Dry Creek, and Alexander Valley AVAs) meet in Healdsburg.