Coast Miwok. The Coast Miwok language was traditionally spoken from Bodega Bay across Petaluma Plain to Sonoma Valley, the lower Napa River, and through Marin County to the Golden Gate. In pre-contact times, there were approximately 1500 speakers (Kroeber 1925). Today, there are no first-language speakers (Golla 2011). Coast Miwok is a Miwokan language; the others members of this family are Central Sierra Miwok, Lake Miwok, Northern Sierra Miwok, Plains Miwok, Saclan, and Southern Sierra Miwok. The Miwokan languages comprise one branch of the hypothesized Penutian language family, within which they form a subgroup with the Ohlone languages (Awaswas, Chalon, Chochenyo, Karkin, Mutsun, Ramaytush, Rumsen, and Tamyen).