St Augustine Real EstateSt Augustine is located in Illinois. St Augustine, Illinois has a population of 125. St Augustine is less family-centric than the surrounding county with 6.25% of the households containing married families with children. The county average for households married with children is 25.27%. The median household income in St Augustine, Illinois is $40,938. The median household income for the surrounding county is $45,994 compared to the national median of $69,021. The median age of people living in St Augustine is 54 years. St Augustine WeatherThe average high temperature in July is 85 degrees, with an average low temperature in January of 14.5 degrees. The average rainfall is approximately 38.6 inches per year, with 23.8 inches of snow per year. St Augustine MapReal estate near St AugustineNearby CitiesNearby Cities Homes for Sale |