Location: Illinois, Chicago, Cook County
Approximate number of phones: 285
Carrier: Ameritech Illinois
Mr. Number records show that there are at least 365 active phone numbers with the prefix 312380 out of a possible 10,000. Numbers in this exchange are both mobile and landline phones. Phone numbers beginning with 312-380 are allocated to Illinois, in particular Chicago in Cook County. Public records tell us that 48.40% (176) of subscribers are men and 51.60% (188) are women. Median household income in this part of the country is $54,598 and 58.17% of housing units are owner-occupied.