Healdsburg is a city located in Sonoma County, California, USA. As of the 2000 United States Census, the city had a total population of 10,722. 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 meet in Healdsburg. Though the town was not founded during Mexican rule, Healdsburg is centered on a 19th century plaza that provides an important focal point for tourists and locals alike.