According to the United States Census Bureau, the city has a total area of 5.6 square miles (14.50 km2), all of it land.

36.4% of all households were made up of individuals, and 16.9% had someone living alone who was 65 years of age or older.

Established in 1914, the weekend-long event typically occurs on the third weekend in September of even-numbered years in the historic downtown area known as “the Square”.

The festivities include carnival rides, a variety of local food, restaurant, craft, and club stands, live, traditional Swiss-Germanic music (including polkas and waltzes), and a culmination of it all into a two-hour parade on Sunday afternoon.

Badger State Trail Runs from Madison through Fitchburg past the Ice Age National Scenic Trail Montrose segment, Belleville, New Glarus, and crosses the Sugar River State Trail before reaching Monroe, and then continues to meet with the Jane Addams Trail at the Illinois border which continues to Freeport, Illinois.

St. Victor Catholic elementary school offers grades K (four years old) through 5.

[9] Monroe has a campus of Blackhawk Technical College, the community's sole institution of post-secondary education.

Monroe Municipal Airport (KEFT) serves the city and surrounding communities.

Wisconsin and Southern Railroad serves the city with freight service.

A branch line from Janesville ends at Badger State Ethanol.