Elias Voulgaris, formerly commander in the 19th District, takes over the top job in the 17th District.
A half-dozen districts are getting new commanders, including Lincoln Square's and North Center's.
Both the Near North and Town Hall districts will soon have new commanders.
One woman in Lakeview reported an unconscious man whose friends took selfies rather than call 911.
Wrigley Field neighbors had plenty of concerns about the 2015 Cubs season during a Thursday meeting.
Town Hall Police Cmdr. Elias Voulgaris said a long-standing gang rivalry could be flaring up again.
Cmdr. Elias Voulgaris will join Ald. Tom Tunney and Lakeview residents at 7-Eleven, 3407 N. Halsted. St.
Town Hall District officers held a public roll call to send "a message to the bad guys."
Police said the number of officers in the Town Hall District has decreased since two districts merged.
Town Hall district police said they issued at least 230 citations on Sunday, up from 10 last year.
Police are cracking down on public drinking, rooftop parties and crowded balconies. No bikes on the CTA.
Police sent residents a letter warning about illegal rooftop parties and over-capacity balconies.
Lakeview police said they'll issue fines at the Pride parade and concerts to curtail public drinking.
But some residents doubted the city's numbers after a critical Chicago magazine investigation.
A woman, 27, was sexually assaulted inside a restroom at The Irish Oak bar early Sunday, police said.
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