Sonoma County is separated between the unincorporated areas which fall under the jurisdiction of the County and the cities of Cloverdale, Cotati, Healdsburg, Petaluma, Rohnert Park, Santa Rosa, Sebastopol, Sonoma, and Windsor. You can see the jurisdiction of your parcel by using the Permit Sonoma Zoning and Land Use Map, which grays out the areas within the county that are under the jurisdiction of the cities.