Olinalá is a municipality in the Mexican state of Guerrero. The municipal seat lies at Olinalá. The municipality covers an area of 1,028.1 km². …Olinalá is a municipality in the Mexican state of Guerrero. The municipal seat lies at Olinalá. The municipality covers an area of 1,028.1 km². As of 2005, the municipality had a total population of 22,645.