The Saint Francis Solano Church is located at the intersection of West Napa and 3rd Street, on a large property with a lawn. It is the only Catholic Church in Sonoma City, and also runs St Francis Solano School, a Catholic elementary and middle school. The pastor is Father Michael Kelly, and there is also a Spanish-speaking vicar.
St. Francis Solano offers frequent masses and services, and presides over marriages, baptisms and funerals.