The Sunnyslope community is an established neighborhood within the borders of the city of Phoenix, Arizona. The geographic boundaries are 19th Avenue to the west, Cactus Road to the north, 16th Street to the east, and Northern Avenue to the south. This area covers approximately nine square miles and is divided into nine census tracts. The Sunnyslope …The Sunnyslope community is an established neighborhood within the borders of the city of Phoenix, Arizona. The geographic boundaries are 19th Avenue to the west, Cactus Road to the north, 16th Street to the east, and Northern Avenue to the south. This area covers approximately nine square miles and is divided into nine census tracts. The Sunnyslope community is included in parts of three zip code areas: 85020, 85021 and 85029.