Rancho Dominguez sounds like one of those rich 1%er neighborhoods.
Rancho Dominguez is actually an unincorporated area of LA County bounded on the north by Compton, east and south by Long Beach, and west by Carson, so the demographics ain't exactly Mayberry RFD, though the mobile home park (actually the only residential area in RD) was relatively nice with security, community pool, enforced landscaping standards, etc. In any case, I'm now in Texas.