Glen Park Post Office, 320 E. 40th Ave., 46409-9998 — Retail and PO Box operations are suspended due to building damage and safety concerns. These operations have been temporarily relocated to Gary Main Post Office, 1499 Martin Luther King Dr., 46401-9998. Retail hours are Monday through Friday, 8 a.m. to 6 p.m., and Saturday, 8 a.m. to 2 p.m.