The lifespan of a pool can vary depending on a number of factors, including the materials used to construct it, the level of maintenance it receives, and the climate it is located in. On average, the lifespan of a concrete pool is around 20-25 years, while the lifespan of a vinyl liner pool is around 10-15 years. Fiberglass pools have a longer lifespan, around 25-30 years. However, with regular maintenance and proper upkeep, a pool can last for many years beyond these estimates.