Unemployment rates were higher in March than a year earlier in 309 of the 369 metropolitan areas, lower in 40 areas, and unchanged in 20 areas, the Bureau of Labor Statistics of the U.S. Department of Labor reported. Fourteen areas, 12 of which are located in California, recorded jobless rates of at least 10.0 percent, while 9 areas registered rates below 3.0 percent. The national unemployment rate in March was 5.2 percent, not seasonally adjusted, up from 4.5 percent a year earlier.