Healdsburg, CA has a population of 11,614 and is the 3,509th largest city in the United States. The population density is 2,606 per sq mi which is 1021% higher than the California average and 2776% higher than the national average. The median age in Healdsburg is 44 which is approximately 23% higher than the California average of 36. In Healdsburg, 60% of the population over 15 years of age are married, 73% speak English and 24% speak Spanish. 56% of Healdsburg residents were born in California, 25% were born out of state, 1% were born outside of the United States and 19% were foreign born.