Onarga is located in Iroquois County, Illinois. There are roughly 305 residents, living in 98 households. The average temperature for Onarga this time of the year is low of 63F and high of 86F. On average, Onarga gets about 4.1 inches of precipitation in July. Most residents are home owners (77%), have a high school diploma (50%) and are single, no kids (36%).
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