| Station Name |
Months |
Country |
Earliest |
Most Recent |
| SAN MALI SAN | 706 | Mali | Jan 1950 | Oct 2013 |
| SAN AGUSTIN | 357 | Mexico | Sep 1956 | Nov 1998 |
| SAN ANDRES (ISLA)/SESQUICENTENARIO | 654 | Colombia | May 1958 | Oct 2013 |
| SAN ANGELO 15WNW | 7 | United States | Aug 2006 | Feb 2007 |
| SAN ANGELO DAM | 268 | United States | Jul 1953 | Nov 1975 |
| SAN ANGELO GOODFELLOW AFB | 140 | United States | Jan 1946 | Aug 1958 |
| SAN ANGELO MATHIS FIELD | 1212 | United States | Aug 1907 | Oct 2013 |
| SAN ANGELO WFO | 126 | United States | May 1948 | Oct 2013 |
| SAN ANTONIO | 121 | Argentina | Aug 1930 | Dec 1944 |
| SAN ANTONIO | 25 | United States | Sep 1895 | Aug 1898 |
| SAN ANTONIO (INT. AIRP.) | 1545 | United States | Jan 1885 | Oct 2013 |
| SAN ANTONIO 8 NNE | 194 | United States | Sep 1997 | Oct 2013 |
| SAN ANTONIO BANOS | 90 | Cuba | May 1943 | Oct 2013 |
| SAN ANTONIO CN MOUTH | 410 | United States | Jan 1933 | Jun 1967 |
| SAN ANTONIO CREEK | 13 | United States | Jul 1949 | Sep 1950 |
| SAN ANTONIO DEL TACHIRA | 792 | Venezuela | Jan 1940 | Oct 2013 |
| SAN ANTONIO KELLY FIELD AAF | 262 | United States | Jan 1949 | Dec 1970 |
| SAN ANTONIO MISSION | 148 | United States | Sep 1959 | Dec 1971 |
| SAN ANTONIO OESTE AERO | 949 | Argentina | Jan 1931 | Oct 2013 |
| SAN ANTONIO SEAWORLD | 262 | United States | Jun 1988 | Feb 2012 |
| SAN ANTONIO STINSON MUNI AP | 185 | United States | Jun 1998 | Oct 2013 |
| SAN ANTONIO TEXAS/BROOKS AFB | 148 | United States | Feb 1948 | May 1960 |
| SAN ANTONIO, TX | 1240 | United States | Jan 1900 | Dec 2003 |
| SAN ANTONIO/MADRUGA | 95 | Cuba | Jan 1952 | Dec 1960 |
| SAN ARDO | 12 | United States | Jan 1893 | Jan 1894 |
| SAN AUGUSTINE | 210 | United States | Jun 1909 | Oct 2013 |
| SAN BARTHOLOME AEROP. / L | 71 | Spain | Apr 2000 | Sep 2013 |
| SAN BENITO | 567 | United States | Apr 1920 | Jun 1975 |
| SAN BERNARD TEXAS | 117 | United States | Sep 2002 | Jan 2013 |
| SAN BERNARD W/L REFUGE | 23 | United States | Nov 1984 | Jan 1987 |
| SAN BERNARDINO CO HOSPITAL | 1338 | United States | Jan 1891 | Aug 2004 |
| SAN BERNARDINO INT AP | 261 | United States | Jan 1949 | Dec 1970 |
| SAN BERNARDINO INTL | 583 | United States | Feb 1943 | Aug 1993 |
| SAN BLAS | 185 | Mexico | Jun 1938 | Jan 1977 |
| SAN BORJA | 361 | Bolivia | Jan 1971 | Oct 2013 |
| SAN CARLOS #1 ARIZONA | 614 | United States | Nov 1912 | Apr 2013 |
| SAN CARLOS AP | 350 | United States | Oct 1983 | Oct 2013 |
| SAN CARLOS RESERVOIR | 1089 | United States | Nov 1900 | Sep 2013 |
| SAN CLEMENTE | 153 | United States | Jan 1931 | Jun 1944 |
| SAN CLEMENTE ISLAND | 553 | United States | Apr 1945 | Oct 2013 |
| SAN CLEMENTE/ISLAND NAAS | 292 | United States | Apr 1945 | Sep 1988 |
| SAN CRISTOBAL | 128 | United States | Oct 1947 | May 1958 |
| SAN CRISTOBAL AEROPUERTO (GALAPAGOS) | 13 | Ecuador | Mar 2012 | Jul 2013 |
| SAN CRISTOBAL DOMINICAN REPUBL | 474 | Dominican Republic | Jan 1951 | Dec 1990 |
| SAN CRISTOBAL RADIOSONDA (GALAPAGOS) | 654 | Ecuador | Jan 1951 | Sep 2013 |
| SAN DIEGO BROWN FLD | 197 | United States | Feb 1997 | Oct 2013 |
| SAN DIEGO DE LA UNION | 325 | Mexico | Jan 1903 | Aug 1986 |
| SAN DIEGO DE LA UNION, GUANAJU | 627 | Mexico | Sep 1924 | Dec 1983 |
| SAN DIEGO GILLESPIE FIELD | 237 | United States | Nov 1959 | Jul 1979 |
| SAN DIEGO LINDBERGH MUNI AP | 1960 | United States | Jul 1849 | Oct 2013 |
| SAN DIEGO MONTGOMERY FLD | 284 | United States | Mar 1990 | Oct 2013 |
| SAN DIEGO NORTH ISLAND NAS | 823 | United States | Apr 1945 | Oct 2013 |
| SAN DIEGO SEAWORLD | 145 | United States | May 1999 | Apr 2013 |
| SAN DIEGO/MIRAMAR, NAS, CA. | 789 | United States | Jul 1947 | Oct 2013 |
| SAN DIEGO/MONTGOMER | 169 | United States | Jan 1973 | Jan 1990 |
| SAN ESTANISLAO | 192 | Paraguay | Oct 1975 | Oct 2013 |
| SAN ESTANISLAO | 17 | [Missing] | Nov 1991 | Apr 2008 |
| SAN FELIPE | 44 | Chile | Jan 1886 | Dec 1916 |
| SAN FELIPE, BAJA CALIFORNIA SU | 502 | Mexico | Jan 1942 | Dec 1984 |
| SAN FELIPE, BCN | 133 | Mexico | May 1985 | Nov 2008 |
| SAN FERNANDO | 658 | United States | Jun 1918 | Feb 1974 |
| SAN FERNANDO | 516 | Chile | Jan 1912 | Jun 1971 |
| SAN FERNANDO | 432 | Spain | Jan 1850 | Dec 1885 |
| SAN FERNANDO | 7 | Spain | Feb 1976 | Feb 1978 |
| SAN FERNANDO AERO | 93 | Argentina | Feb 2002 | Oct 2013 |
| SAN FERNANDO DE APURE | 880 | Venezuela | Jan 1938 | Oct 2013 |
| SAN FERNANDO, TAMAULIPAS | 673 | Mexico | Nov 1931 | Jun 1992 |
| SAN FERNANDO/CADIZ | 2291 | Spain | Jan 1787 | Dec 1996 |
| SAN FIDEL 1 N | 608 | United States | Jun 1920 | Sep 1976 |
| SAN FRANC. DE LAISHI | 258 | Argentina | Jan 1931 | Dec 1960 |
| SAN FRANCISCO | 302 | Philippines | Jan 1951 | Feb 1993 |
| SAN FRANCISCO | 90 | United States | May 2005 | Oct 2013 |
| SAN FRANCISCO (PBS) | 11 | United States | Apr 1995 | Jun 1996 |
| SAN FRANCISCO /PIER | 23 | United States | Oct 2011 | Oct 2013 |
| SAN FRANCISCO ACAD OF SCIENCE | 72 | United States | Aug 1951 | Jul 1957 |
| SAN FRANCISCO BAY RE | 70 | United States | Nov 2007 | Oct 2013 |
| SAN FRANCISCO DE MACORIS DOMIN | 233 | Dominican Republic | Jan 1951 | Dec 1970 |
| SAN FRANCISCO INT'L ARPT | 1888 | United States | Mar 1848 | Oct 2013 |
| SAN FRANCISCO OCEANSIDE | 592 | United States | Dec 1958 | Aug 2013 |
| SAN FRANCISCO/MISSION DOLORES | 1112 | United States | Jan 1921 | Sep 2013 |
| SAN GABRIEL | 18 | Ecuador | Oct 2011 | Sep 2013 |
| SAN GABRIEL CANYON P H | 125 | United States | Aug 1919 | Oct 2013 |
| SAN GABRIEL FIRE DEPT | 860 | United States | May 1939 | Sep 2013 |
| SAN GERMAN 4 W | 618 | Puerto Rico [United States] | Nov 1904 | Jun 1973 |
| SAN GIOVANNI ITALY | 6 | Italy | Oct 1944 | Apr 1945 |
| SAN GREGORIO 2 SE | 629 | United States | Jun 1954 | Nov 2007 |
| SAN HAVEN | 645 | United States | Jan 1931 | Feb 1986 |
| SAN IGNACIO | 51 | Bolivia | May 1945 | Apr 1950 |
| SAN IGNACIO DE MOXOS | 144 | Bolivia | Mar 1990 | Oct 2013 |
| SAN IGNACIO DE VELASCO | 624 | Bolivia | Jan 1951 | Oct 2013 |
| SAN IGNACIO, BAJA CALIF. SUR | 511 | Mexico | Jan 1941 | Dec 1984 |
| SAN ISABEL | 64 | United States | May 1938 | Sep 1943 |
| SAN ISIDRO | 317 | Philippines | Jan 1903 | Dec 1930 |
| SAN ISIDRO | 14 | Dominican Republic | Jun 1965 | Aug 1966 |
| SAN JACINTO | 445 | United States | Sep 1904 | Sep 1948 |
| SAN JACINTO R S | 1373 | United States | Jan 1893 | Sep 2013 |
| SAN JAVIER | 130 | Bolivia | Sep 1991 | Dec 2011 |
| SAN JERONIMO | 258 | Mexico | Mar 1974 | Nov 1998 |
| SAN JOAQUIN | 625 | Bolivia | Jan 1951 | Oct 2013 |
| SAN JON | 1263 | United States | Jun 1907 | Sep 2013 |
| SAN JOSE | 413 | Guatemala | Sep 1942 | Oct 2013 |
| SAN JOSE | 271 | Philippines | Feb 1982 | Oct 2013 |
| SAN JOSE | 92 | Uruguay | Jan 1961 | Dec 1970 |
| SAN JOSE AEROPUERTO DE | 542 | Spain | Feb 1965 | Oct 2013 |
| SAN JOSE DE | 88 | Bolivia | Sep 1943 | Dec 1951 |
| SAN JOSE DE CHIQUITOS | 425 | Bolivia | Jan 1951 | Oct 2013 |
| SAN JOSE DE JACHAL | 527 | Argentina | Mar 1961 | Oct 2013 |
| SAN JOSE DE LAS MATAS | 120 | Dominican Republic | Jan 1961 | Dec 1970 |
| SAN JOSE DEL CABO | 263 | Mexico | Apr 1991 | Oct 2013 |
| SAN JOSE DEL GUAVIARE | 15 | Colombia | Jan 2005 | Jun 2006 |
| SAN JOSE ISLAND PANAMA | 13 | Panama | Jun 1944 | Aug 1945 |
| SAN JOSE REID HILLVIEW AP | 1669 | United States | Jan 1874 | Oct 2013 |
| SAN JOSE/CENTRAL OFFICE | 471 | Costa Rica | Aug 1941 | Dec 1980 |
| SAN JOSE/LA SABANA | 25 | Costa Rica | Jul 1942 | Sep 1945 |
| SAN JUAN | 619 | Peru | Feb 1949 | Sep 2013 |
| SAN JUAN | 192 | Mexico | May 1951 | Nov 1980 |
| SAN JUAN | 82 | Argentina | Jan 1877 | Dec 1884 |
| SAN JUAN | 17 | Argentina | Jul 1957 | Dec 1958 |
| SAN JUAN A II | 991 | Argentina | Jan 1931 | Oct 2013 |
| SAN JUAN BAUTISTA MISIONES | 663 | Paraguay | Jan 1956 | Oct 2013 |
| SAN JUAN BAUTISTA/MISIONES | 872 | Paraguay | Jan 1941 | Oct 2013 |
| SAN JUAN CANYON | 53 | United States | Oct 2001 | Sep 2006 |
| SAN JUAN CITY | 1002 | Puerto Rico [United States] | Jan 1900 | Oct 2013 |
| SAN JUAN DE LA MAGUANA DOMINIC | 346 | Dominican Republic | Jan 1951 | Dec 1980 |
| SAN JUAN DE LOS MORROS | 271 | Venezuela | Dec 1990 | Oct 2013 |
| SAN JUAN DEL RIO, OAXACA | 427 | Mexico | May 1948 | Dec 1983 |
| SAN JUAN INTL ARPT | 409 | Puerto Rico [United States] | Jul 1941 | Jul 2013 |
| SAN JUAN ISLA VERDE INT'L ARP | 1377 | Puerto Rico [United States] | Jan 1899 | Oct 2013 |
| SAN JUAN ISLE GRANDE | 10 | Puerto Rico [United States] | Jan 1955 | Dec 1955 |
| SAN JUANITO | 53 | United States | May 1909 | Nov 1914 |
| SAN JULIAN | 9 | Cuba | Mar 1945 | Nov 1945 |
| SAN JULIAN AERO | 611 | Argentina | Jan 1951 | Oct 2013 |
| SAN LORENZO ESPINO | 134 | Puerto Rico [United States] | Mar 1946 | Jun 1959 |
| SAN LUIS 2 SE | 619 | United States | Jan 1893 | Jun 2006 |
| SAN LUIS AERO | 990 | Argentina | Jan 1931 | Oct 2013 |
| SAN LUIS CO RGNL | 360 | United States | Oct 1983 | Oct 2013 |
| SAN LUIS DAM | 535 | United States | Feb 1963 | Aug 2007 |
| SAN LUIS LAKES 3W | 109 | United States | Jun 1946 | Jun 1955 |
| SAN LUIS NWR CALIFORNIA | 133 | United States | Apr 2002 | Oct 2013 |
| SAN LUIS OBISPO AP | 183 | United States | Apr 1998 | Oct 2013 |
| SAN LUIS OBISPO POLYTECH | 1429 | United States | Sep 1887 | Sep 2013 |
| SAN LUIS POTOSI S.L.P MEXICO | 61 | Mexico | Nov 1998 | Dec 2004 |
| SAN LUIS POTOSI, S.L.P. | 369 | Mexico | Jan 1973 | Oct 2013 |
| SAN MANUEL | 326 | United States | Jul 1954 | Oct 2013 |
| SAN MANUEL | 97 | United States | May 2004 | Oct 2013 |
| SAN MARC S | 85 | Colombia | Oct 1964 | Jun 1974 |
| SAN MARCOS | 1268 | United States | Mar 1897 | Sep 2013 |
| SAN MARCOS MUNI AP | 185 | United States | Feb 1998 | Oct 2013 |
| SAN MARCOS RANCH | 94 | United States | May 1952 | Mar 1960 |
| SAN MARCOS TX/EDWARD GARY AFB | 144 | United States | Mar 1943 | Jun 1996 |
| SAN MARTIN | 361 | Argentina | Dec 1977 | Oct 2013 |
| SAN MARTIN DE TUCUMAN ARG. | 563 | Argentina | Jan 1928 | Mar 1976 |
| SAN MATEO | 513 | United States | Jul 1934 | Dec 1978 |
| SAN MATEO | 258 | United States | Jul 1918 | Feb 1988 |
| SAN MATIAS | 130 | Bolivia | Dec 1992 | Dec 2011 |
| SAN MIGUEL CALIFORNIA | 133 | United States | Apr 2002 | Oct 2013 |
| SAN MIGUEL ISLAND | 343 | United States | Mar 1894 | May 1942 |
| SAN MIGUEL, ARGENTINA | 690 | Argentina | May 1933 | Dec 1993 |
| SAN MIGUEL/EL PAPAL | 65 | El Salvador | Aug 1995 | Oct 2013 |
| SAN NICHOLAS ISLAND USC | 851 | United States | Sep 1933 | Oct 2013 |
| SAN PASQUAL ANIMAL PK | 364 | United States | Jul 1979 | May 2010 |
| SAN PEDRO | 534 | United States | Sep 1918 | Aug 1964 |
| SAN PEDRO | 88 | Paraguay | Oct 2001 | Oct 2013 |
| SAN PEDRO - AERO | 338 | Cote D'Ivoire | Jul 1978 | Oct 2013 |
| SAN PEDRO AMBERGRIS CAYO | 120 | Belize | Jan 1971 | Dec 1980 |
| SAN PEDRO DE LA CUEVA, SONORA | 283 | Mexico | Feb 1959 | Feb 1983 |
| SAN PEDRO DE MACORIS DOMINICAN | 342 | Dominican Republic | Jan 1952 | Nov 1980 |
| SAN PEDRO NAS | 27 | United States | Mar 1945 | May 1947 |
| SAN RAFAEL | 123 | United States | May 1904 | Aug 1915 |
| SAN RAFAEL AERO | 633 | Argentina | Jan 1961 | Oct 2013 |
| SAN RAFAEL CIVIC CENTER | 767 | United States | Jan 1894 | Aug 2013 |
| SAN RAFAEL RCH SP | 205 | United States | Nov 1948 | Oct 2009 |
| SAN RAMON | 330 | Peru | Jul 1939 | Nov 1974 |
| SAN SABA | 630 | United States | Feb 1901 | Feb 2000 |
| SAN SABA 7 NW | 160 | United States | Mar 2000 | Oct 2013 |
| SAN SALVADOR | 810 | El Salvador | Jan 1912 | Jan 1980 |
| SAN SALVADOR | 312 | El Salvador | Jan 1893 | Dec 1934 |
| SAN SALVADOR/ILOPANGO | 487 | El Salvador | Jan 1956 | Oct 2013 |
| SAN SEBASTIAN - IGUELDO | 1348 | Spain | Jan 1878 | Oct 2013 |
| SAN SEBASTIAN 2 WNW | 375 | Puerto Rico [United States] | Jan 1965 | Oct 1997 |
| SAN SEBASTIAN/FUENTERRABIA | 647 | Spain | Sep 1955 | Oct 2013 |
| SAN SEVERO ITALY | 16 | Italy | Jan 1944 | Apr 1945 |
| SAN SIMEON PT PIEDRAS BLANCAS | 384 | United States | Aug 1938 | Sep 1975 |
| SAN SIMEON PT PIEDRAS BLANCAS | 76 | United States | Feb 1998 | May 2005 |
| SAN SIMEON/PT. PIEDRAS BLANCAS CGLS, CA. | 212 | United States | Jun 1943 | May 2005 |
| SAN SIMON 5 NW | 694 | United States | Jan 1903 | Sep 2013 |
| SAN SIMON 9 ESE | 287 | United States | Aug 1962 | Jul 1986 |
| SAN VICENTE AEROPUERTO | 68 | Ecuador | Oct 1977 | Oct 1988 |
