Battle of Boonville Facts

June 17, 1861

Key facts about the Battle of Boonville

Portrait of Nathaniel Lyon

Union Brigadier-General Lyon’s victory secured central Missouri for the Union and denied the Confederacy the use of the Missouri River during the Civil War. [Wikimedia Commons]



  • June 17, 1861


  • Near Boonville, Missouri


  • Operations to Control Missouri

Principal Union commander(s):

  • Brigadier General Nathaniel Banks

Principal Confederate commander(s):

  • Colonel John S. Marmaduke

Union forces engaged:

  • Combined force of Missouri troops and Regular U.S. Army

Confederate forces engaged:

  • Missouri State Guard

Number of Union soldiers engaged:

  • Roughly 1,700

Number of Confederate soldiers engaged:

  • Roughly 1,500

Estimated Union casualties:

  • 31 (including five killed)

Estimated Confederate casualties:

  • Between 8 to 60 (killed, wounded, and captured)


  • Union victory


  • Secured central Missouri for the Union and deprived the Confederacy use of the Missouri River during the Civil War.
  • Sent the Missouri state government into exile, preventing Missouri Governor Jackson from exerting his influence to bring about Missouri’s secession from the Union.

Citation Information

The following information is provided for citations.

  • Article Title Battle of Boonville Facts
  • Date June 17, 1861
  • Author
  • Keywords Battle of Boonville
  • Website Name American History Central
  • Access Date June 3, 2023
  • Publisher R.Squared Communications, LLC
  • Original Published Date
  • Date of Last Update April 27, 2022

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