Williamson County, Illinois

Browse all ZIP codes in Williamson County, Illinois. Each ZIP code page includes population, median household income, and a map of the area.

County Statistics

Total Population 63,536
Median Household Income $53,079
Median Age 41.9
Unemployment Rate 4.2%
Poverty Rate 14.3%
ZIP Codes 11

Largest ZIP Codes in Williamson County

ZIP Code City Population Median Income
62959Marion27,255$61,850
62948Herrin12,679$55,272
62918Carterville10,844$67,224
62951Johnston City5,574$54,120
62922Creal Springs2,824$68,325

Demographics

Race & Ethnicity

Gender

Education Level (adults 25+)

All ZIP Codes in Williamson County