I am going to answer as if you are asking me. I am assuming the county because I believe that unincorporated areas get sprayed as well, maybe not ever country road but the more traversed areas. To ask for a special spot treatment of your area you contact the town. These free sprays are just a truck going down the street. There are private businesses that offer the service as well but these are people with backpack sprayers that walk your whole property.
After Hurricane Florence we had horrible mosquito, hummingbird sized. There were concerns of disease so about one month after the hurricane they bombed us by a low flying plane. They used the term dusk to indicate when they would start, which I am thinking they must have started early because they hit over us about 15 minutes before dusk is listed on the Weather Channel app. We were out walking. Threw my little dog under my shirt and we ran home as quickly as possible trying not to breath, fortunately only a few houses away. The next morning the streets were littered with butterflys. It was sad.
