Telephone Info

The 312 area code applies to the Loop and the neighborhoods closest to it, including River North, North Michigan Avenue, and the Gold Coast. The code for the rest of the city is 773. Suburban area codes are 847 (north), 708 (west and southwest), and 630 (far west). You must dial "1" plus the area code for all telephone numbers, even if you are making a call within the same area code.