| | Milwaukee County | WI | 55079 | | Milwaukee-Waukesha, WI 33340 | Milwaukee-Racine-Waukesha,
WI 376 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=MilwaukeeCounty+WI |
| | Ozaukee County | WI | 55089 | | Milwaukee-Waukesha, WI 33340 | Milwaukee-Racine-Waukesha,
WI 376 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=OzaukeeCounty+WI |
| | Washington County | WI | 55131 | | Milwaukee-Waukesha, WI 33340 | Milwaukee-Racine-Waukesha,
WI 376 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=WashingtonCounty+WI |
| | Waukesha County | WI | 55133 | | Milwaukee-Waukesha, WI 33340 | Milwaukee-Racine-Waukesha,
WI 376 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=WaukeshaCounty+WI |