Welcome to Middleton, Idaho, a charming town founded in 1863 with a population of around 14,813 residents. Known for its rich agricultural history, Middleton is a hidden gem nestled in the heart of the Treasure Valley. Home to the famous Middleton Pioneer Cemetery, this town offers a glimpse into the past with its well-preserved historical sites. Sister cities include Middleton, Wisconsin and Middleton St. George in the United Kingdom.