Lockport, Illinois

1 ZIP code · Central time

ZIP codes (largest first)

60441 · 36,844
Population26,409
StateIllinois
CountyWill County
Time zoneCentral
Land area11.74 sq mi

Area codes in this area

779815

These are the area codes that most often serve Lockport (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Find the ZIP+4 for an address in Lockport

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Population: U.S. Census Bureau, ACS 5-year estimates, 2024.