- Cacoal is a city in the state of Rondônia, Brazil. It is located in the western part of the state, about 480 kilometers (298 miles) from the state capital, Porto Velho. Cacoal has a population of around 90,000 people and is known for its agricultural activities, particularly the production of coffee and dairy products. The city also has a growing industrial sector, with the presence of several small and medium-sized companies. Cacoal is surrounded by beautiful natural landscapes, including lush forests, rivers, and waterfalls, making it a popular destination for eco-tourism and outdoor activities.