When looking for a banking institution in Tucson, Arizona look no further than the Tucson Federal Credit Union. As their motto says, they're "better than a bank!"
TFCU was started in 1937 for school employees and their families in Tucson. It is now a community charter credit union which allows anyone who lives, works, volunteers, worships, or attends school in Pima County to join. Their immediate family members or members of their household are also allowed to join. Businesses and other legal entities in Pima County are also able to join.
In order to join you must deposit a minimum of $25, have a signed and notarized membership application, a social security card, and a government issued ID such as a driver's license or passport.
One feature that I love is the over draft protection that doesn't cost you anything. If you write a check or use your debit card but you don't have enough money to cover it in checking but you do in savings, the money will be transferred from savings to checking to cover the charge.
My family and I have been members of TFCU since the early 90's. After having banked with TFCU I would not want to bank anywhere else.
Update On Apr 13, 2008: The TFCU is now part of a shared branching network that consits of over 2, 500 locations. This means that you can go to another credit union that is part of the shared branching and make deposits, withdrawals, or make loan payments just as if you were at TFCU.