The 331 area code region is economically vibrant, with a strong presence of corporate headquarters, tech companies, and diverse industries. Major employers include McDonald's, Navistar, Fermilab, and numerous healthcare facilities. The region also boasts several popular shopping destinations and entertainment districts.
Area code 331 covers parts of northeastern Illinois, including portions of DuPage County (Naperville, Lisle, Wheaton), Kane County (St. Charles, Geneva, Batavia), and Cook County (Schaumburg, Hoffman Estates, Palatine). It neighbors area codes 847 (northwest Chicago suburbs), 224 (north Chicago suburbs), 708 (southwest Chicago suburbs), 630 (western Chicago suburbs), and area code 262 in southeastern Wisconsin.
AI Front Desk is the ultimate business phone solution. Your business phone number comes equipped with an AI Phone Receptionist that sounds like a human, answers questions, and schedules appointments on autopilot.
Area code 331 covers parts of northeastern Illinois, including portions of DuPage, Kane, and Cook counties. It borders area codes 847, 224, 708, and 630 within Illinois, as well as area code 262 in southeastern Wisconsin.
The region covered by area code 331 is largely suburban with a mix of residential and commercial areas. The population is diverse, with a significant presence of families, professionals, and retirees. The median household income is above the national average, reflecting the affluence of many of the neighborhoods within this area code.
Area code 331 observes Central Time (CT) and follows Daylight Saving Time (DST) schedule.
Area code 331 encompasses several notable attractions, including the Naperville Riverwalk, Morton Arboretum, Cantigny Park, and the Paramount Theatre. The region is also home to several prestigious educational institutions, such as North Central College, Wheaton College, and the Illinois Mathematics and Science Academy.
AI Front Desk is the ultimate business phone solution. Your business phone number comes equipped with an AI Phone Receptionist that sounds like a human, answers questions, and schedules appointments on autopilot.
