I'm a broken record on this, but this is yet another example demonstrating that it's basically impossible to compare cities along political borders. "Chicago" covers 234 sq/mi at the center of Chicago, whereas "Minneapolis" covers about 54 sq/mi of the center of Minneapolis, so an officer in Minneapolis and one in Chicago could be living and working in nearly identical environments -- they may, for example, both be living in an old, majority white inner-ring suburb a couple miles from Downtown and policing a majority black area they have no history in -- and the Chicago officer would be counted as living in Chicago, but the Minneapolis officer would not be counted as living in Minneapolis.
Their day-to-day experiences, their relationship to the communities they serve, their physical distance from Downtown, the built environment of their own neighborhoods, the socio-economic make-up of their friends and family -- and on and on and on -- could be practically identical, but we'd count them differently in your list.