2005 Texas (13-0)
2004 USC (13-0)
2003 Louisiana State (13-1) Southern California (12-1)
2002 Ohio State (14-0)
2001 Miami (12-0)
2000 Oklahoma (13-0)
1999 Florida State (12-0)
1998 Tennessee (13-0)
1997 Michigan (12-0) Nebraska (13-0)
1996 Florida (12-1)
1995 Nebraska (12-0)
1994 Nebraska (13-0)
1993 Florida State (12-1)
1992 Alabama (13-0)
1991 Washington (12-0) Miami (12-0)
1990 Colorado (11-1-1) Georgia Tech (11-0-1)
1989 Miami (11-1)
1988 Notre Dame (12-0)
1987 Miami (12-0)
1986 Penn State (12-0)
1985 Oklahoma (11-1)
1984 Brigham Young (13-0)
1983 Miami (11-1)
1982 Penn State (11-1)
1981 Clemson (12-0)
1980 Georgia (12-0)
1979 Alabama (12-0)
1978 Alabama (12-1) Southern Cal (12-1)
1977 Notre Dame (11-1)
1976 Pittsburgh (12-0)
1975 Oklahoma (11-1)
1974 Oklahoma (11-0) Southern Cal (10-1-1)
1973 Notre Dame (11-0) Alabama (11-1)
1972 Southern Cal (12-0)
1971 Nebraska (13-0)
1970 Nebraska (11-0-1) Texas (10-1)
1969 Texas (11-0)
1968 Ohio State (10-0)
1967 Southern Cal (10-1)
1966 Notre Dame (9-0-1)
1965 Alabama (9-1-1) Michigan St. (10-1)
1964 Alabama (10-1)
1963 Texas (11-0)
1962 Southern Cal (11-0)
1961 Alabama (11-0)
1960 Minnesota (8-2)
1959 Syracuse (11-0)
1958 LSU (11-0)
1957 Auburn (10-0) Ohio State (9-1)
1956 Oklahoma (10-0)
1955 Oklahoma (11-0)
1954 Ohio State (10-0) UCLA (9-0)
1953 Maryland (10-1)
1952 Michigan State (9-0)
1951 Tennessee (10-0)
1950 Oklahoma (10-1)
Listed above are the national champions for the last 55 years. 23 teams that won a national championship are northern schools.
The south does have more elite college football programs than the north, no one can argue that. Partly because a lot of recruits only consider schools with warm weather, like USC or Miami. But the best teams in the north can play as well as the best teams in the south, there are just more elite teams in the south. College kids want to live and play in warm weather, in states like Florida, California, Texas, Georgia, etc. Also the fact that the north has states like Wyoming(493,782), North Dakota(642,200), South Dakota(754,844), Idaho(1,293,953), Montana(902,195), and the entire New England region minus New York that dont even add up to half of Texas' total population(22,118,509) doesnt help.
Northern football has just as much quality as southern football, there just isnt as much quantity. Its human nature, people want to live in warmer states.
The 3 most storied programs of all time are probably OSU, Notre Dame, and Michigan, all northern schools.