Los Osos is an unincorporated town in San Luis Obispo County, California, on the state's Central Coast. It occupies the southern shore of Morro Bay, with the town of Morro Bay and its landmark volcanic rock to the north and the city of San Luis Obispo about 12 miles to the east. Its name is Spanish for "the bears," and the area is sometimes called the Valley of the Bears, a nod to the black bears that live in the nearby Los Padres National Forest. The town's population of about 14,500 gives it the scale of a substantial coastal community while it remains unincorporated and largely residential. The setting is what defines Los Osos. The Morro Bay estuary, a nationally significant coastal lagoon, forms its northern edge, while the Elfin Forest, a 90-acre natural area of ancient pygmy oaks, rises along the bay. To the south and west, Montaña de Oro State Park stretches across 8,000 acres of coastal bluffs, beaches, and hills, one of the largest state parks on the California coast. Eucalyptus groves throughout the area attract migrating monarch butterflies, which gather by the thousands in winter. The area's human history reaches back to the Chumash people, who inhabited coastal villages along Morro Bay, and the Back Bay archaeological site in Los Osos preserves evidence of settlement from roughly AD 800 to 1200. Modern Los Osos grew as a quiet residential community and has retained its unincorporated, semi-rural character even as the Central Coast has drawn more residents and visitors. For homebuyers, Los Osos offers direct access to some of California's finest coastal open space, a relaxed bayside lifestyle, and a location convenient to both Morro Bay and San Luis Obispo. It suits those who prioritize nature, space, and community over urban density, and who are comfortable with the town's spread-out, unincorporated feel.