East Chicago, IN Post Offices
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46312
Post Office Address Phone Hours EAST CHICAGO 901 E CHICAGO AVE EAST CHICAGO, IN 46312 - 9998 219-397-2415 Mon-Fri 09:00 AM - 05:00 PM Sat 09:00 AM - 12:00 PM Sun Closed HARBOR 3813 MAIN ST EAST CHICAGO, IN 46312 - 2360 219-397-2417 Mon-Fri 09:00 AM - 12:00 PM 01:15 PM - 05:00 PM Sat 09:00 AM - 12:00 PM Sun Closed