Bay Miwok - Population Change Over Time

Population Change Over Time

Estimates for the precontact populations of most native groups in California have varied substantially. (See Population of Native California.) Alfred L. Kroeber put the 1770 population of the Plains and Sierra Miwok (but excluding the Bay Miwok, about whom he was not aware) at 9,000. Sherburne Cook carried out a more specific analysis of contact-period population in Alameda and Contra Costa counties west of the San Joaquin Valley, without regard to the Ohlone-Bay Miwok language boundary; he suggested a total population of 2,248. Richard Levy estimated 19,500 people for all five Eastern Miwok groups as a whole (Bay, Plains, Northern Sierra, Central Sierra, and Southern Sierra) prior to Spanish contact, and 1,700 specifically for the Bay Miwok.

A total of 859 Bay Miwok speakers were baptized at the Franciscan missions (479 at Mission San Francisco and 380 at Mission San Jose), most between 1794 and 1812. By the end of 1823, only 52 of the Mission San Francisco Bay Miwoks were still alive, along with 11 of their Mission-born children. No comparable data are available for Mission San Jose that year, but by 1840 only 20 Bay Miwok people were alive there. Late nineteenth century survivors from both missions intermarried with people from other language groups. Descendants are alive today (see Present Day section below).