Yolillal is a district of the Upala canton, in the Alajuela province of Costa Rica.

[1][2] The name means a place with an abundant yollillo, a plant.

Yolillal was created on 26 November 1980 by Decreto Ejecutivo 12092-G.[2] Yolillal has an area of 139.54 km2[3] and an elevation of 39 metres.

[1] For the 2011 census, Yolillal had a population of 3,308 inhabitants.

[6] The district is covered by the following road routes: This Costa Rican location article is a stub.