幕尼西波利比利亚

Founded on 7 June 1977, four years after Guanacasteca was founded and solely represented Guanacaste Province, Municipal Liberia won promotion to the Primera División de Costa Rica in 2001 after beating Ramonense in a Promotion play-off final. They made their debut in the top tier on 29 July 2001 against Saprissa.

Liberia Mía

In June 2007, the club was bought largely (90% of the shares) by Mario Sotela (linked to the Sotela-blen family) and were renamed Liberia Mía (My Liberia) after a Sotela project located in Liberia that is called "Zoológico África Mía" (it is a special zoo based only on African animals and species).

Águilas Guanacastecas and relegation

In 2009, Liberia Mía won the Verano championship title, but it proved to be a short-lived party when in July 2010, the club just renamed again to Águilas Guanacastecas (Guanacastecan Eagles), were demoted to the Segunda División de Costa Rica after trading franchise rights with Barrio México. The move was regarded by some as controversial since Barrio México club president Mínor Vargas was allegedly also involved with Liberia. Also, it was the second time a Guanacaste team was sold and moved outside the province after Guanacasteca's franchise was taken by Brujas de Escazú in 2004.

Municipal Liberia again

In summer 2011, after Barrio México was expelled from the Primera División, Liberia played in the second division as Los Coyotes del Municipal Liberia, replacing AD Desamparados whose franchise was bought by Liberia's new owner Manrique Sibaja. The club has been playing in the second division ever since.

In February 2015, Uruguayan coach Orlando de León took charge, replacing Slovak Josef Miso after some poor performances.