And probably almost as many in surrounding areas like Oakland, San Jose, The Peninsula.
That's calculated from 34 on tsrent, roughly 67 on tsescorts.  Add a few more on trans.eros.com (I don't shop there much lately.)

Do you have ANY other wishlist criteria?  Any ol' transwoman, or are you looking for another versatile or prefer a bottom or a top, tall, short, skinny curvy?

(Me: tall, busty, hung tops are my nirvana.  6' 2", 36 DD, 9" cut 28-38 years old, any race, hair color, whatever, WITH GOOD REVIEWS and I'd smash my piggy bank and beg her to use me!)

A search on the reviews here for a 50 mile radius around SF, 7-10 in both looks and performance, and pre-op shows 7 ladies in the period of one year or less, two of them within the last week!  (TER ID 409205 Melissa and 409160 Stellapila).