Compact enough that a map covers the whole social city in one screen, which is not true of anywhere else in California.
Map & Mingle shows you roughly where somebody is, never exactly. Coordinates shown to anyone else are snapped to a grid of about 500 feet, so you can judge whether meeting is realistic without anyone being locatable. Looking is free and needs no photo. Everyone is 18 or over.
We publish the real number of people on the map near Sacramento on this page. If it is small, it says so. There are no invented profiles and no fake activity notifications on this service.