Chicago police said the shooting happened just before 12:45 p.m. near a Gage Park migrant shelter in the 2400 block of West 55th Street.
A 28-year-old man was on the sidewalk when a vehicle pulled up, and someone inside fired shots, striking him in the head, police said.
Police said the victim was transported in critical condition to Mount Sinai Hospital, where he was pronounced dead.
Alderman Ray Lopez said the victim was a migrant, but he did not live at the Gage Park shelter at the time of the shooting.
Area One detectives are investigating. Authorities did not immediately provide further information about the shooting.
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