| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Jackson | city | Wisconsin | United States | 43.32 | -88.17 | 892 | |
| Jacksonport | city | Wisconsin | United States | 44.98 | -87.19 | 830 | |
| Jacksonville | city | Wisconsin | United States | 43.95 | -90.56 | 1017 | |
| Jamestown | city | Wisconsin | United States | 42.59 | -90.55 | 898 | |
| Janesville | city | Wisconsin | United States | 42.68 | -89.02 | 849 | |
| Jefferson | city | Wisconsin | United States | 43.01 | -88.81 | 830 | |
| Jefferson Junction | city | Wisconsin | United States | 43.04 | -88.79 | 830 | |
| Jeffris | city | Wisconsin | United States | 45.50 | -89.43 | 1686 | |
| Jenkinsville | city | Wisconsin | United States | 42.63 | -90.37 | 872 | |
| Jennings | city | Wisconsin | United States | 45.51 | -89.07 | 1669 | |
| Jensen's Mobile Home Village | city | Wisconsin | United States | 42.72 | -87.92 | 830 | |
| Jericho | city | Wisconsin | United States | 43.97 | -88.27 | 1000 | |
| Jericho | city | Wisconsin | United States | 42.88 | -88.42 | 898 | |
| Jersey City | city | Wisconsin | United States | 45.49 | -89.74 | 1669 | |
| Jewett | city | Wisconsin | United States | 45.12 | -92.44 | 1053 | |
| Jim Falls | city | Wisconsin | United States | 45.05 | -91.27 | 1010 | |
| Jimtown | city | Wisconsin | United States | 43.35 | -90.64 | 1000 | |
| Joel | city | Wisconsin | United States | 45.36 | -92.23 | 1151 | |
| Johannesburg | city | Wisconsin | United States | 45.17 | -92.59 | 882 | |
| Johnsburg | city | Wisconsin | United States | 43.88 | -88.29 | 977 | |
| Johnson | city | Wisconsin | United States | 45.01 | -89.36 | 1669 | |
| Johnson Creek | city | Wisconsin | United States | 43.08 | -88.77 | 830 | |
| Johnsonville | city | Wisconsin | United States | 43.80 | -87.91 | 830 | |
| Johnstown | city | Wisconsin | United States | 43.37 | -90.86 | 830 | |
| Johnstown | city | Wisconsin | United States | 42.70 | -88.81 | 938 | |
| Johnstown Center | city | Wisconsin | United States | 42.70 | -88.84 | 948 | |
| Jonesdale | city | Wisconsin | United States | 42.90 | -90.01 | 1043 | |
| Jordan | city | Wisconsin | United States | 44.57 | -89.51 | 1085 | |
| Juda | city | Wisconsin | United States | 42.59 | -89.51 | 839 | |
| Jump River | city | Wisconsin | United States | 45.35 | -90.80 | 1246 | |
| Junction | city | Wisconsin | United States | 45.01 | -90.90 | 1200 | |
| Junction City | city | Wisconsin | United States | 44.59 | -89.77 | 1131 | |
| Juneau | city | Wisconsin | United States | 43.41 | -88.71 | 902 |