Is it safer to keep your money in a credit union or a bank?

Bank of the Lowcountry 8 Bank of Winnfield & Trust Company 5 Belt Valley Bank 5 Bendena State Bank 2 Crossroads Bank 13 Farmers Bank of Northern Missouri 7 FIRST National Association National Bank CENTRAL TX 7 First National Bank of Litchfield 1 First National Bank of Nokomis 2 FIRST OKLAHOMA Bank 12 First Port City Bank 11 Fredonia Valley Bank 2 Guardian Bank 10 HINSDALE B&TC National Association 9 M C Bank & Trust 4 MERRICK Bank 19 Mountain Valley Bank 4 ORIGIN Bank 16 PEOPLES B&TC CO 7 Sloan State Bank 9