There are 18 zip codes in Macoupin County, Illinois. The most populated is 62626, located in Carlinville. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
626267,840Carlinville
620886,439Staunton
620334,628Gillespie
626903,830Virden
620143,749Bunker Hill
626403,273Girard
620693,230Mount Olive
620091,713Benld
626851,692Shipman
626741,398Palmyra
62630686Chesterfield
62667560Modesto
62093500Wilsonville
62079469Piasa
62649408Hettick
62085167Sawyerville
62023150Eagarville
62672150Nilwood

Zip Codes in Macoupin County, Illinois by Population (2024)