WOW = Waukesha, Ozaukee, and Washington counties.
Red arc is approximate
Police sue over new residency rule. (Milwaukee Journal Sentinel, 8/23/2016)
For decades, all city employees, with few exceptions, had to live within Milwaukee boundaries. In 2013, the state Legislature passed a law that undid all such strict residency requirements but did allow for cities to require certain employees, including police and firefighters, to live within 15 miles of city limits. Milwaukee did not adopt a new rule but instead continued to enforce its longtime rule of residency within city boundaries.
Source: U.S. Census QuickFacts (2010)