312 Area Code covers 40 Cities Algonquin, IL. Arlington Heights, IL. Aurora, IL. Barrington, IL. Bensenville, IL. Cicero, IL. Clarendon Hills, IL. Country Club Hills, IL. Crystal Lake, IL. Darien, IL. Harwood Heights, IL. Hinsdale, IL. Indianapolis, IN. Lake Zurich, IL. Oak Park, IL. Park Ridge, IL. Plainfield, IL. Prospect Heights, IL.
What ZIP Code is 312 in Illinois?
Zip code 60666 is located mostly in Cook County, IL. This postal code encompasses addresses in the city of Chicago, IL. Find directions to 60666, browse local businesses, landmarks, get current traffic estimates, road conditions, and more.
What cities are 312?
Its one of the most iconic area codes, associated with Chicagos business and cultural hub. A Chicago-based number, particularly a 312 number, enhances credibility, establishes a local presence, and can be an effective marketing tool that helps businesses connect better with local customers.
What is the 4 digit extension for ZIP Code?
Your ZIP+4 is a basic five-digit code with four digits added as an extra identifier. It helps to identify a geographic segment within the five-digit delivery area, such as a city block, a group of apartments, an individual high-volume receiver of mail, or a post office box.
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