1940 9,011 +2.7% 1950 11,115 +23.3% 1960 14,607 +31.4% 1970 18,800 +28.7% 1980 23,966 +27.5% 1990 27,244 +13.7% 2000 30,666 +12.6% 2010 34,032 +11.0% Source: United States Census records and Population Estimates Program data. [ 4 ] [ 5 ] [ 6 ] [ 7 ] [ 8 ] [ 9 ] [