Yaz lives in Dublin, but is on a USTA 4.5 team, so he might be low 5.0.
VitaminL lives somewhere around Newark or so, is top 4.0 or middlin 4.5, but he hasn't been on this board for a year.
RajS lives in Campbell, Northern San Jose, is a good 4.0.
I play in San Pablo Park Berkeley, about an hour from Dublin and play MWF 11-2, and Sunday mornings for an hour or so. Shroud and Papa Mango also play in the area.