www.securitymagazine.com/articles/89715-which-cities-have-the-fastest-police-response-time

Which Cities Have the Fastest Police Response Time?
January 1, 2019
If you have an emergency, you might wait a while in Denver (average police response time of just under 13 minutes), while a serious emergency call in Chicago will garner a response within 3.5 minutes. On average, though, your best bet is Los Angeles, with an average police response time of 5.7 minutes, according to a report from Safe Smart Living.