Is there an actual quote where she says the world is 5500 years old?
Don't know of a "quote", but she is on the far right biblically
Palin was born a Catholic, but was raised in fundamentalist / Pentecostal Churches
From sermons by Mike Rose, senior pastor at Juneau Christian Center (Palin’s church)
From an April 27, 2008 sermon: “If you really want to know where you came from and happen to believe the word of God that you are not a descendant of a chimpanzee, this is what the word of God says. I believe this version.”
From a July 8, 2007 sermon: “Those that die without Christ have a horrible, horrible surprise.”
From a July 28, 2007 sermon: “Do you believe we’re in the last days? After listening to Newt Gingrich and the prime minister of Israel and a number of others at our gathering, I became convinced, and I have been convinced for some time. We are living in the last days. These are incredible times to live in.”