Sorry . .
Colonel Hogan's hometown was Bridgeport, Connecticut. This was stated in several episodes including #85, "Axis Annie" (1968).
In episode #166, "Hogan's Double Life" (1971), it was stated that Colonel Hogan was born in Ohio. He attended the aviation cadet school, graduated 3rd in his class.
In episode #97, "To the Gestapo with Love" (1968), Colonel Hogan said "if you’re ever in Cleveland, Ohio after the war, look me up."
No mention of Indiana or Indianapolis.