where is somis ca
Somis, California. Somis is an unincorporated community of Ventura County, California that was established in 1892 by Thomas Bard and D.T. Perkins on a portion of the Mexican land grant, Rancho Las Posas. Somis is in the Las Posas Valley on the south bank of Fox Barranca, just west of Arroyo Las Posas.