Northline is an unincorporated community located in the town of Hudson, St. Croix County, Wisconsin, United States.

[1] Northline was originally called North Wisconsin Junction, until 1906 when the present name was adopted.

[2] A post office called North Wisconsin Junction was in operation from 1878 until 1884.

[3] Northline was named from the fact that from this point a branch of the railroad headed for Northern Wisconsin.

This article about a location in St. Croix County, Wisconsin is a stub.