Trinidad is a Home Rule Municipality that is the county seat and the most populous city of Las Animas County, Colorado, United States. The population was 9,096 as of the 2010 census, up slightly from 9,078 in 2000. The estimate as of 2018 was 8,211. Trinidad lies 21 mi (34 km) north of Raton, New Mexico, and 195 mi (314 km) south of Denver. It is on the historic Santa Fe Trail.
Trinidad was first explored by Spanish and Mexican traders, who liked its proximity to the Santa Fe Trail. It was founded in 1862 soon after coal was discovered in the region. This led to an influx of immigrants eager to capitalize on this natural resource.
By the late 1860s, the town had about 1,200 residents. Trinidad was officially incorporated in 1876, just a few months before Colorado became a state. In 1878 the Atchison, Topeka and Santa Fe Railway reached Trinidad, making it easier for goods to be shipped from distant locations.
In the 1880s Trinidad became home to a number of well-known people, including Bat Masterson, who briefly served as the town’s marshal in 1882. By 1900 Trinidad’s population had grown to 7,500 and it had two English-language newspapers and one in Spanish.
In the early 1900s Trinidad became nationally known for having the first woman sports editor of a newspaper, Ina Eloise Young. Her expertise was in baseball, and in 1908 she was the only woman sportswriter to cover the World Series. During the same time, Trinidad was home to a popular semiprofessional baseball team that was briefly coached by Damon Runyon.