Map of ZIP Code. ZIP code 95818 is centered in Sacramento County and overlaps Medical Service Study Area(s) 139i and 139i. Census tract(s) 06067001900, 06067002000, 06067002100, 06067002200, 06067002300, 06067002400, 06067002500 and 06067002600 overlap this ZIP code area too. Other ZIP codes nearby.