SAN DIEGO—The unemployment rate in San Diego County decreased to 5.6 percent from a revised 6.6 percent in August, well below the year-ago estimate of 9.6 percent, according to figures released Oct. 22 by the state Employment Development Department (EDD). This compares with an unadjusted unemployment rate of 6.4 percent for California—which decreased from 7.5 percent in August—and 4.6 percent for the nation—down from August’s 5.3 percent—during the same period. Between August and September, nonfarm employment increased by 3,600, from 1,409,900 to 1,413,500, according to EDD figures. Agricultural employment remained unchanged. Government led all industry sectors in job gains for the second consecutive month, with a gain of 9,500. The majority of those were in local government—with 6,500 jobs gained, 4,900 of which were in local government educational services. Additionally, state government added 2,900 jobs in September. Other month-over-month gainers were professional and business services, with 1,400 gained, and financial …