Average GPS coordinates for Janesville Postcode location: 42.705, -89.05. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Janesville on map:

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Listing cities & postcodes (4):
>> Wisconsin, 53545 Janesville, Rock, GPS coordinates: 42.7355,-89.0405
>> Wisconsin, 53546 Janesville, Rock, GPS coordinates: 42.6683,-89.0025
>> Wisconsin, 53547 Janesville, Rock, GPS coordinates: 42.7294,-89.0301
>> Wisconsin, 53548 Janesville, Rock County, GPS coordinates: 42.6854,-89.1287