Frequencies for first 10,000 rows of msa variable in zipcode dataset : metro | statistical | area code | by common | pop-pre | 2003; no | msa for | rural | Freq. Percent Cum. ------------+----------------------------------- 0000 | 3,197 31.97 31.97 0060 | 6 0.06 32.03 0160 | 180 1.80 33.83 0240 | 81 0.81 34.64 0280 | 16 0.16 34.80 0470 | 8 0.08 34.88 0560 | 53 0.53 35.41 0720 | 204 2.04 37.45 0730 | 46 0.46 37.91 0740 | 49 0.49 38.40 0875 | 109 1.09 39.49 0960 | 45 0.45 39.94 1120 | 284 2.84 42.78 1160 | 29 0.29 43.07 1200 | 28 0.28 43.35 1280 | 110 1.10 44.45 1305 | 45 0.45 44.90 1310 | 8 0.08 44.98 1480 | 41 0.41 45.39 1540 | 34 0.34 45.73 1900 | 22 0.22 45.95 1930 | 25 0.25 46.20 1950 | 16 0.16 46.36 2190 | 21 0.21 46.57 2281 | 39 0.39 46.96 2335 | 17 0.17 47.13 2360 | 46 0.46 47.59 2600 | 12 0.12 47.71 2975 | 44 0.44 48.15 3180 | 23 0.23 48.38 3240 | 95 0.95 49.33 3280 | 162 1.62 50.95 3610 | 38 0.38 51.33 3640 | 23 0.23 51.56 3660 | 20 0.20 51.76 3680 | 92 0.92 52.68 4000 | 73 0.73 53.41 4160 | 38 0.38 53.79 4240 | 21 0.21 54.00 4560 | 23 0.23 54.23 4640 | 36 0.36 54.59 4760 | 37 0.37 54.96 4840 | 10 0.10 55.06 5015 | 102 1.02 56.08 5190 | 91 0.91 56.99 5350 | 17 0.17 57.16 5380 | 205 2.05 59.21 5400 | 16 0.16 59.37 5480 | 52 0.52 59.89 5520 | 44 0.44 60.33 5600 | 430 4.30 64.63 5640 | 176 1.76 66.39 5660 | 71 0.71 67.10 5720 | 146 1.46 68.56 6160 | 463 4.63 73.19 6280 | 404 4.04 77.23 6320 | 33 0.33 77.56 6360 | 15 0.15 77.71 6400 | 52 0.52 78.23 6450 | 49 0.49 78.72 6480 | 97 0.97 79.69 6680 | 54 0.54 80.23 6760 | 113 1.13 81.36 6800 | 57 0.57 81.93 6840 | 155 1.55 83.48 7440 | 98 0.98 84.46 7560 | 109 1.09 85.55 7610 | 22 0.22 85.77 8000 | 103 1.03 86.80 8040 | 45 0.45 87.25 8050 | 31 0.31 87.56 8160 | 129 1.29 88.85 8480 | 38 0.38 89.23 8680 | 74 0.74 89.97 8760 | 21 0.21 90.18 8840 | 743 7.43 97.61 8880 | 27 0.27 97.88 9140 | 22 0.22 98.10 9160 | 69 0.69 98.79 9240 | 72 0.72 99.51 9280 | 49 0.49 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 4 Jan 2016 tail -n+3 /homes/data/zip/sas/2013/desc/zipcode/byvar/tab/msa.log | egrep -v '