Prospect Heights, IL is a city located in Cook County, Illinois and has a land area of 3.98 square miles (10.31 km2). The water area for the city is 0.03 square miles or 0.08 km2. There is one unique zip code in Prospect Heights, Illinois and it is 60070. The area code(s) for Prospect Heights is 312/847/630/708.
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