Gillespie, IL is a city located in Macoupin County, Illinois and has a land area of 46.81 square miles (121.24 km2). The water area for the city is 0.61 square miles or 1.58 km2. There is one unique zip code in Gillespie, Illinois and it is 62033. The area code(s) for Gillespie is 217/618.
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