Guanacaste Province

Guanacaste
Coordinates: 10°26′N 85°24′W / 10.433°N 85.400°W / 10.433; -85.400
CountryCosta Rica
Capital and largest cityLiberia
Area
 • Total
10,140.71 km2 (3,915.35 sq mi)
Population
 • Total
404,774
 • Density39.9157/km2 (103.381/sq mi)
Time zoneUTC-06:00 (CST)
ISO 3166 codeCR-G
HDI (2022)0.790
high · 5th of 7

Guanacaste (Spanish pronunciation: [ɡwanaˈkaste]) is a province of Costa Rica in the northwestern part of the country, along the coast of the Pacific Ocean. It is bordered by Nicaragua to the north, Alajuela Province to the east, and Puntarenas Province to the southeast. It is the most sparsely populated province in Costa Rica. Guanacaste has an area of 10,141 square kilometres (3,915 sq mi) and as of 2010, had a population of 354,154, with annual revenue of $2 billion.

Guanacaste's capital is Liberia. Other important cities include Cañas and Nicoya.