- Nicoya is a city and a canton in Guanacaste province in Costa Rica. It is located on the Nicoya Peninsula, which stretches into the Pacific Ocean. Nicoya is known for its rich history, as it was one of the earliest Spanish settlements in Costa Rica. It has a population of around 19,000 people and is a popular tourist destination due to its historical sites, cultural events, and proximity to beautiful beaches. It is also known for its traditional Costa Rican cuisine and vibrant local markets. Nicoya is considered one of the Blue Zones, which are regions of the world where people live exceptionally long and healthy lives.