 26.6% of residents were under the age of 18; 10.6% were between the ages of 18 and 24; 27.1% were from 25 to 44; 23% were from 45 to 64; and 12.8% were 65 years of age or older.The gender makeup of the city was 47.1% male and 52.9% female.Since 2005 the unemployment rate in St. Clair, Missouri has ranged from 4.4% in April 2007 to 13.3% in January 2009.