The history of Yopal is relatively young compared to many other cities in Colombia. The first permanent settlements in this territory appeared only in the early 20th century. The official starting point is often considered to be 1915, when settler Elías Granados built the first house here, which became the nucleus of the future city. The city's name has deep local roots and comes from the word "yopo" — the name of a tree (Anadenanthera peregrina) that grew in abundance in this area. Initially, the place was called "El Yopal," which literally means "grove of yopo trees."
The transformation of a humble settlement into an important regional centre was driven by its advantageous geographical location on the border of the Andean foothills and the vast plains (Llanos). An important milestone was 1942, when the settlement received the official status of a police inspection. However, the decisive moment in development came in 1973, when Yopal was chosen as the administrative centre (capital) of the Casanare Intendancy. This event attracted investment and new residents, cementing the city's status as the region's main hub.
In the first decades of its existence, Yopal's economy depended entirely on agriculture and livestock farming. The city was formed as a centre of Llanero culture — the Colombian cattle herders and horsemen. Life in early Yopal revolved around cattle drives, livestock trading, and traditional fairs. These activities laid the foundation for a unique local identity, which is still vividly manifested in the region's music, gastronomy, and folklore.