Sugarloaf Mound measures approximately 40 feet (12 m) in height, 100 feet (30 m) north/south and 75 feet (23 m) east/west. It is currently located entirely within the incorporated City of St. Louis, but previously was on the border between St. Louis and the formerly autonomous city of Carondelet. In 1809 the mound was used as a survey landmark when St. Louis was incorporated.
A residence was constructed abutting Sugarloaf Mound in the 20th Century, and portions of the mound were also impacted by a quarry and the construction of Interstate 55. Although suppressed in some online municipal records, the Sugarloaf Mound house was standing and still bore a mailing address of 4420 Ohio Street as of March 2013.
It was purchased by the Osage Nation in 2009 with the stated intention of preservation.[dead link] The Osage Nation does not claim a direct link to the construction of the mound, but claims a kindred heritage of mound building in the American Midwest. "Preservation" does not include the existing residence, but, by 2013, seems to point to an intention to restore Sugarloaf Mound to a condition similar to its configuration before the advent of Non-Native American architectural embellishments and razings.