Area Code 331 Map and Data

Area Code 331 Profile

Start Date10/07/2007
Current Time
in Area Code 331
331>
CDT
TimezoneCentral Daylight Time
Regional Market AreaMetro Chicago
Population (2020)1581268
Adjacent
Area Codes
224,464,630,708,773,779,815,847,872
Overlay
Area Codes
630

Area Code 331 Boundary Map

List of Counties in Area Code 331

DuPage County
Kane County
Kendall County
';