1855 Chicago mayoral election

Chicago mayoral election, 1855
March 8, 1855
 
Candidate Levi Boone Isaac Lawrence Milliken
Party Know Nothing Democratic
Popular vote 3,185 2,839
Percentage 52.87% 47.13%

Mayor before election

Isaac Lawrence Milliken
Democratic

Elected mayor

Levi Boone
Know Nothing

In the 1855 Chicago mayoral election, Know Nothing candidate Levi Boone defeated Democratic incumbent Isaac Lawrence Milliken by a 5.75% margin.

The election was held on March 8.