Sahara Desert size in comparative of Mojave Desert May 9, 2014 in Countries Facts, Earth Facts / World Facts The Sahara Desert in northern Africa is more than 23 times the size of southern California’s Mojave Desert. The Sahara Desert in northern Africa is more than 23 times the size of southern California's Mojave Desert. Review OverviewUser Rating: Be the first one ! 0 Desert Sahara Desert 2014-05-09 Admin Share ! tweet