The town was established as a military settlement in 1816, shortly after the
War of 1812. The settlement of Lanark County began in 1815. In that year "the Settlement forming on the Rideau River" as it was officially referred to (and which soon became known as "Perth Military Settlement") began to function under Military direction. The settlement was named Perth in honour of acting Governor-General Sir Gordon Drummond, whose ancestral home was
Perthshire. Several townships were surveyed to facilitate the location of farms for military and other settlers; and the site of the future Town of Perth, which had been chosen as the headquarters of the Military Establishment was surveyed in 1816. Many of the first settlers were military veterans on half pay, while others were military veterans from France, Germany, Poland, Italy, Scotland or Ireland who were offered land in return for their service. The
Reverend William Bell, who arrived in June 1817, noted in his diaries that the settlement was more European than the Scottish settlement described to him. The first Scottish settlers came in 1816. The Craig Street Cemetery, sometimes referred to as the "Old Burying Grounds" also contains many historic graves and saw use from 1820 to 1873. The town's motto is "Pro Rege, Lege et Grege" ("For the King, the Law and the People"), which is shared with the City of Perth in Scotland, and which was adopted in 1980 along with a new crest. The previous motto, "Festina lente sed certo" ("Make haste slowly but surely"), and original town crest appears on the uniforms of the Perth Citizen's Band. Founded in 1850, this band continues a tradition of community music with numerous concerts each season. Near the town is the home of world
show jumping champion
Ian Millar and Millar Brooke Farm where his great horse
Big Ben (1976–1999) is buried. The town has erected a bronze life-sized statue of the horse and Ian Millar, in Stewart Park, across from the Code's Mill building. This town was the site of the last fatal
duel in Upper Canada.
Robert Lyon, a law student, was killed on June 13, 1833, after fighting over a woman (Elizabeth Hughes) with a former friend, John Wilson. A local park is named "Last Duel Park" to commemorate the event. In 1893, a
cheese known as the 'Mammoth Cheese' was produced in Perth to be exhibited in Chicago at the
World's Columbian Exposition to promote Canadian cheese around the world. There is widespread concern among Perth citizens, and with some town Councillors, about the impact of the development on the small town. On February 11, 2025, the town entered mediation with Caivan over its plans. The Perth Citizens Band, still giving concerts on the bandstand behind Town Hall, is a tradition dating back over 150 years. The band is Canada's oldest active town band. The Perth Citizens Band played "The Maple Leaf Forever" as the Mammoth Cheese departed to the
Chicago World's Fair in 1893. The bandstand has been behind the Town Hall since it was moved there in 1901 and free summer concerts have taken place there ever since. Perth is also the site of the first installation of a telephone other than Bell's experimental installations. A town dentist, Dr. J. F. Kennedy, a friend of
Alexander Graham Bell, installed a direct telephone connection between his home and office. By 1887, there were 19 telephones in Perth, with a switchboard in Dr. Kennedy's office. In 2010, Perth held the historic "Kilt Run" in which 1,067 kilt-clad runners crossed the finish line. The idea to hold a kilt run in Perth was conceived of in October 2009 by Terry Stewart after the Mayor submitted a letter to the
Perth Courier requesting town residents come up with an idea to help
Perth, Scotland celebrate its 800th anniversary. The Perth, Ontario, Kilt Run has since become an annual event. The 2016 Kilt Run attracted 5,000 runners as part of the town's 200th anniversary. ==Demographics==