[9][10] Marshfield is home to the only intersection of the TransAmerica Bicycle Trail and U.S. Route 66.

A replica of the Hubble Space Telescope can be found in front of the Webster County Court House at 100 S Clay St. Marshfield is located at 37°20′23″N 92°54′26″W / 37.33972°N 92.90722°W / 37.33972; -92.90722 (37.339599, -92.907230).

[12] According to the United States Census Bureau, the city has a total area of 5.03 square miles (13.03 km2), all land.

The city experiences four distinct seasons; summers are warm and humid, while winters are cool with occasional cold spells.

Snowfall is generally light, with an average of 5.2 inches (13 cm).

At the 2010 census, 6,633 people, 2,605 households, and 1,756 families were living in the city.

The 2,918 housing units had an average density of 580.1 per square mile (224.0/km2).

At the 2000 census, 5,720 people, 2,256 households, and 1,534 families resided in the city.

The 2,417 housing units had an average density of 499.8 per square mile (193.0/km2).

[17] As of June 2021, the mayor of Marshfield is Natalie B. McNish and the city administrator is Sam Rost.