The county name of "Maguabo" in Puerto Rico has an FIPS County code of 72103. des (located here), the county name with this 72103 FIPS County code is called "Naguabo." NFD might mean "No further details". Created 2012-10-24 by Jean Roth , jroth@nber.org , 2012-10-24 Los Angeles FIPS 06037 can have two SSA county codes: 05210 and 05200. Los Angeles is the only FIPS county with multiple SSA codes. 2012 and 2013 files are identical. 2005 and 2011 file have 3,289 counties and 2012-2013 have 3,273 counties. /homes/data/cbsa-msa-fips-ssa-county-crosswalk/2011/cbsa-msa-fips-ssa-county-crosswalk-2005-2011-county-comparison.log has more information about difference betweet 2005 and 2011. . list countyname state ssacounty fipscounty if y2011==2011 & y2012==. +---------------------------------------------------------+ | countyname state ssacou~y fipsco~y | |---------------------------------------------------------| 72. | ANGOON AK 02030 02031 | 73. | BARROW-NORTH SLOPE AK 02040 02040 | 78. | CORDOVA-MCCARTHY AK 02080 02080 | 83. | KENAI-COOK INLET AK 02120 02120 | 86. | KOBUK AK 02140 02140 | |---------------------------------------------------------| 88. | KSUKOKWIN AK 02160 02160 | 94. | OUTER KETCHIKAN AK 02190 02190 | 97. | PR.OF WALES AK 02200 02200 | 98. | PR.OF WALES-OUT.KETCHIKAN AK 02201 02201 | 99. | SEWARD AK 02210 02210 | |---------------------------------------------------------| 102. | SKAGWAY-YAKUTAT-ANGOON AK 02231 02231 | 103. | SKAGWAY-HOONAH-ANGOON AK 02232 02232 | 105. | UPPER YUKON AK 02250 02250 | 106. | VALDEZ-CHITNA-WHITTIER AK 02260 02260 | 110. | WRANGELL-PETERSBURG AK 02280 02280 | |---------------------------------------------------------| 1696. | YELLOWSTONE NATL PARK MT 27113 30113 | 2484. | WASHABAUGH SD 43650 46131 | 2985. | CLIFTON FORGE CITY VA 49211 51560 | 3003. | NANSEMOND CITY VA 49610 51695 | 3014. | SOUTH BOSTON CITY VA 49867 51780 | +---------------------------------------------------------+ Q: What's going on with Charlotte, NC Metro area in 2013 file? A: http://ui.uncc.edu/story/charlotte-msa-change-2013 Counties dropped Feb 2013: Anson Counties added Feb 2013: Rowan, Lincoln, Iredell, Chester, Lancaster Boundaries changed Feb 2013: Cabarrus, Gaston, Union, York