Cuéllar has a population of approximately 9,000 people, making it a small but vibrant town. The demographic makeup of the town is predominantly Spanish, with a strong connection to its Castilian heritage. However, in recent years, there has been a slight increase in diversity due to tourism and the growing interest in the town as a place to visit or relocate.
Cuéllar’s population tends to be slightly older, with many younger residents moving to larger cities for work. However, the town’s recent focus on tourism and event hosting is beginning to attract a younger demographic, particularly during festival seasons.