Today is primary election day in Alabama. But which districts do I live in? Go to the Alabama State Legislature's ZIP Code search. You will need your nine digit ZIP code to know your exact House and Senate Reps. Don't know those last four digits? No problem. Go to the USPS Address search. Type in your address without ZIP code and submit. You will get your full nine digit ZIP code. Enter this into the Rep ZIP Code search and see who represents your community.