La Yesca is a municipality located in the Mexican state of Nayarit. It serves as the municipal seat for the same area and is situated at the easternmost point of the state.
The municipality is characterized by its low population density, which stands at 7 inhabitants per square kilometer, one of the lowest figures in Nayarit. As of 2005, the total population of the municipality was 12,025, while the town serving as the municipal seat had a population of 356.