 The current unemployment rate for St. Clair is 6.1% in December 2014.Statistics found on city-data.com showed that 69.7% of the population completed high school, 6.5% achieved a bachelor's degree, and only 2.5% achieved a graduate degree.As of the census of 2000, there were 4,390 people, 1,765 households, and 1,143 families living in the city.