The town was first settled by French-Canadian fur trappers and mountain men. It was the gateway to all the mountainous region lying north of the South Platte River and extending from the Plains to the Continental Divide. The trappers built cabins here along the Cache la Poudre River as early as 1828, making it the first settlement in Larimer County. According to legend, a group of fur traders had earlier stashed supplies (including gunpowder) in a cache along the river near Laporte, and that is how the river got its name. It became the home of Antoine Janis in 1844, who is often noted as the first permanent settler north of the Arkansas River. A band of mountaineers, hunters and trappers made LaPorte their headquarters for fur catching and trading operations. The settlement increased in numbers, including 150 lodges of Arapaho Indians who settled peacefully along the river and in the valley."The Musgrove Gang: Horse Thieves and Cattle Rustlers". over-land.com. Retrieved January 28, 2010 The town was named by the fur trappers, many with Native American wives, who settled in the area in the mid-19th century. The name la porte means "the door" in French.
