Apple Valley, city (1990 pop. 46,079), San Bernardino co., S Calif., 27 mi/43 km NNE of San Bernardino co., in SW part of Mojave Desert; 34°32'N 117°13'W. Lucerne L. (dry) to E. Cattle; fruit; grain, alfalfa; mfg. (fabricated metal, diversified light mfg.).