According to the
Californa DOJ statistics, there were 399 permits issued by the Contra Costa sheriff office as of 2006. That is an increase of 121 over the prior year.
Contra Costa County has been a well known non-issue county for years, with alleged collusion between the Sheriff and city police chiefs to deny CCWs to most people. You might read a research and commentary on Contra Costa issuance policies at
http://www.equalccw.com/cccc2.pdf.
That being said, they have been increasing the number of permits.