William J. Sanford is Sheriff, followed by Benjamin W. White.

• An election precinct is established in the home of James Carleton.

• One of the largest coordinated escapes in U.S. history is attempted by 55-75 armed slaves from several counties. They are captured by the state militia following a shootout.

• The Treaty of Guadalupe Hidalgo ends the Mexican War. Mexico gives up California and all land north of the Rio Grande, which makes up 35% of Mexico's total territory.
• The Whig Party nominates Mexican War hero (and Kentucky native) Zachary Taylor for President, bypassing the more controversial Henry Clay. On the heels of military victory, Taylor wins easily.
• The first Women's Rights Convention in the U.S. opens at Seneca Falls.

• Boone County Tax Lists, 1848: District 1, District 2.