Jamesburg is a borough in Middlesex County, New Jersey, United States. Jamesburg was formed as a borough by an act of the New Jersey Legislature on March 19, 1887, when it was created from portions of Monroe Township, based on the results of a referendum held on March 15, 1887. Jamesburg's incorporation was confirmed on April 15, 1915. On July 17, 2005, approximately 7 to 8 inches (18 to 20 cm) of rain fell in Jamesburg, flooding areas on West Railroad Avenue, East Church Street, Pergola Avenue, Willow Street, Forsgate Drive, and Gatzmer Avenue. Roughly 75 to 100 families were evacuated from their homes and housed at the John F. Kennedy Elementary School. Jamesburg is governed under the Borough form of New Jersey municipal government. The governing body consists of a Mayor and a Borough Council comprising six council members, with all positions elected at-large on a partisan basis as part of the November general election. A Mayor is elected directly by the voters to a four-year term of office.