According to the city's website, there was some debate over whether to name the township Saratoga or Rosemount, with the latter finally chosen to reflect the town's Irish heritage and remain in keeping with the name given to the post office a few years earlier.

[7] In the 1940s it was home to a military gunpowder plant, Gopher Ordnance Works.

16.6% of all households were made up of individuals, and 5.2% had someone living alone who was 65 years of age or older.

13.0% of all households were made up of individuals, and 4.0% had someone living alone who was 65 years of age or older.

Despite Rosemount's relatively small population, it is the only multiple-time host of the USA Broomball National Championships, welcoming competing teams in 2001, 2002, 2003, and 2005.

Three different rinks in the area have hosted games in the men's and co-rec divisions.

Rosemount also holds Leprechaun Days, a 10-day community festival with many events.

Rosemount is in Minnesota's 2nd congressional district, represented by Angie Craig, a Democrat.