Is it better to have all your money in one bank or multiple?

BANK OF AMER CA National Association 10 Bank of Hazelton 6 CANANDAIGUA National Association National Bank&TC 18 CENTRAL PACIFIC Bank 21 CHEMUNG CANAL TC 19 Credit First, National Association 14 DAKOTA Community B&TC National Association 3 Dewey Bank 3 Freedom Financial Bank 12 GNBank, National Association 1 Kirkpatrick Bank 8 Local Bank 7 OLD FT BankG CO 5 Outdoor Bank 10 St. Johns Bank & Trust 8 State Bank of New Richland 12 Tandem Bank 11 United Bank & Trust Company 5 WELLS FARGO National Association National Bank WEST 13 Western Alliance Trust Company, National Association 7