#1. The Most Public Transit-Friendly ZIP Codes in Ketchikan Gateway Borough, AK ZIP Code 99901, AK Learn more Population: 13,822 Median Age: 40 College-Educated: 25% Family-Households: 64% Median Household Income: $72,728 Average Commute (mi.): 16 Lived Here Last Year: 83% Median Home Value: $289,900 Median Monthly Rent: $1,012 Renter-Occupied: 32%