List of Volcanoes In The United States

Sl. No Name State Elevation Location Last eruption Meters Feet Coordinates 1 Mount Adagdak Alaska 645 2115 51°59′16″N 176°35′30″W / 51.98778°N 176.59167°W - 2 Mount Akutan Alaska 1303 4275 54°8′4″N 165°59′10″W / 54.13444°N 165.98611°W 1996 3 Amak Volcano Alaska 488 1601 55°25′26″N 163°8′57″W / 55.42389°N 163.14917°W 1796 4 Mount Amukta Alaska 1066 3497 52°30′0″N 171°15′8″W / 52.50000°N 171.25222°W 1997 5 Mount Aniakchak Alaska 1341 4400 56°53′0″N 158°10′0″W / 56.88333°N 158.16667°W 1931 6 Mount Augustine Alaska 1252 4108 59°21′48″N 153°26′0″W / 59.36333°N 153.43333°W 2005 7 Bogoslof Island Alaska 150 492 53°56′0″N 168°2′0″W / 53.93333°N 168.03333°W 1992 8 Buldir Volcano Alaska 656 2152 52°21′0″N 175°54′38″W / 52.35000°N 175.91056°W - 9 Mount Bona Alaska 5005 16,421 61°23′6″N 141°45′3″W / 61.38500°N 141.75083°W - 10 Mount Blackburn Alaska 4996 16,390 61°43′54″N 143°25′59″W / 61.73167°N 143.43306°W - 11 Buzzard Creek Alaska 830 2723 64°4′0″N 148°25′0″W / 64.06667°N 148.41667°W 1050 BC 12 Capital Mountain Alaska 2356 7728 62°26′N 144°06′W / 62.43°N 144.10°W - 13 Mount Carlisle Alaska 1620 5315 52°53′38″N 170°3′15″W / 52.89389°N 170.05417°W 1987 14 Mount Chagulak Alaska 1142 3747 52°34′36″N 171°8′0″W / 52.57667°N 171.13333°W - 15 Mount Chiginagak Alaska 2221 7287 57°8′6″N 156°59′24″W / 57.13500°N 156.99000°W 1998 16 Mount Cleveland Alaska 1730 5676 52°49′30″N 169°56′38″W / 52.82500°N 169.94389°W 2014 17 Cold Bay Volcano Alaska 1920 6299 55°04′55″N 162°53′38″W / 55.082°N 162.894°W - 18 Mount Dana Alaska 1354 4442 55°38′28″N 161°12′50″W / 55.64111°N 161.21389°W 1890 BC 19 Davidof Volcano Alaska 328 1076 51°57′15″N 178°19′34″E / 51.9542°N 178.326°E - 20 Mount Denison Alaska 2318 7606 58°25′4″N 154°26′57″W / 58.41778°N 154.44917°W - 21 Devils Desk Alaska 1954 6409 58°30′N 154°18′W / 58.5°N 154.3°W - 22 Mount Douglas Alaska 2140 7021 58°51′19″N 153°32′31″W / 58.85528°N 153.54194°W - 23 Mount Dutton Alaska 1506 4941 55°10′5″N 162°16′18″W / 55.16806°N 162.27167°W Unknown 24 Mount Edgecumbe Alaska 970 3132 57°3′0″N 135°45′0″W / 57.05000°N 135.75000°W 2220 BC ± 100 years 25 Mount Emmons Alaska 1436 4711 55°20′26″N 164°4′43″W / 55.34056°N 164.07861°W - 26 Mount Fisher Alaska 1112 3648 54°39′0″N 164°26′0″W / 54.65000°N 164.43333°W 1830 27 Mount Frosty Alaska 2012 6601 55°4′54″N 162°48′50″W / 55.08167°N 162.81389°W Unknown 28 Fourpeaked Alaska 2105 6906 58°46′12″N 153°40′20″W / 58.77000°N 153.67222°W 2006 29 Gareloi Volcano Alaska 1573 5161 51°47′25″N 178°47′38″W / 51.79028°N 178.79389°W 1989 30 Mount Gilbert Alaska 818 2684 54°15′08″N 165°39′43″W / 54.2521°N 165.662°W - 31 Great Sitkin Alaska 1740 5709 52°4′34″N 176°7′48″W / 52.07611°N 176.13000°W 1974 32 Mount Gordon Alaska 2755 9039 62°8′0″N 143°5′0″W / 62.13333°N 143.08333°W - 33 Mount Griggs Alaska 2317 7602 58°21′14″N 155°5′30″W / 58.35389°N 155.09167°W - 34 Hayes Volcano Alaska 3034 9954 61°38′25″N 152°24′41″W / 61.64028°N 152.41139°W 1200 ± 300 years 35 Mount Herbert Alaska 1280 4199 52°44′32″N 170°6′38″W / 52.74222°N 170.11056°W - 36 Mount Iliamna Alaska 3053 10,016 60°1′55″N 153°5′25″W / 60.03194°N 153.09028°W 1876 37 Imuruk Lake Alaska 610 2001 65°36′0″N 163°55′0″W / 65.60000°N 163.91667°W 300 38 Ingakslugwat Hills Alaska 190 623 61°26′0″N 164°28′0″W / 61.43333°N 164.46667°W - 39 Mount Isanotski Alaska 2446 8025 54°45′54″N 163°43′21″W / 54.76500°N 163.72250°W - 40 Mount Kagamil Alaska 893 2930 52°58′25″N 169°43′0″W / 52.97361°N 169.71667°W 1929 41 Mount Kaguyak Alaska 901 2956 58°36′30″N 154°1′40″W / 58.60833°N 154.02778°W 1650 BC 42 Mount Kanaga Alaska 1307 4288 51°55′22″N 177°10′4″W / 51.92278°N 177.16778°W 1995 43 Kasatochi Island Alaska 314 1030 52°10′39″N 175°30′30″W / 52.17750°N 175.50833°W 2008 44 Mount Katmai Alaska 2047 6716 58°16′47″N 154°57′48″W / 58.27972°N 154.96333°W 1912 45 Mount Kialagvik Alaska 1677 5502 57°12′10″N 156°44′43″W / 57.20278°N 156.74528°W - 46 Mount Kiska Alaska 1220 4003 52°06′11″N 177°36′13″E / 52.1031°N 177.6035°E 1990 47 Mount Koniuji Alaska 273 896 52°13′0″N 175°8′0″W / 52.21667°N 175.13333°W - 48 Korovin Volcano Alaska 1533 5029 52°22′54″N 174°9′57″W / 52.38167°N 174.16583°W 2006 49 Mount Kukak Alaska 2043 6703 58°27′10″N 154°21′18″W / 58.45278°N 154.35500°W - 50 Mount Kupreanof Alaska 1895 6217 56°0′40″N 159°47′50″W / 56.01111°N 159.79722°W 1987 51 Kookooligit Mountains Alaska 673 2208 63°36′0″N 170°26′0″W / 63.60000°N 170.43333°W Holocene 52 Little Sitkin Alaska 1174 3852 51°57′0″N 178°32′35″W / 51.95000°N 178.54306°W 1830 53 Mount Mageik Alaska 2165 7103 58°11′41″N 155°15′10″W / 58.19472°N 155.25278°W - 54 Mount Makushin Alaska 1800 5905 53°53′27″N 165°55′22″W / 53.89083°N 165.92278°W 1995 55 Mount Martin Alaska 1863 6112 58°10′20″N 155°21′40″W / 58.17222°N 155.36111°W 1953 56 Mount Moffett Alaska 1196 3924 51°56′38″N 176°44′48″W / 51.94389°N 176.74667°W - 57 Novarupta Alaska 841 2759 58°16′0″N 155°9′24″W / 58.26667°N 155.15667°W 1912 58 Nunivak Island Alaska 511 1676 60°1′0″N 166°20′0″W / 60.01667°N 166.33333°W - 59 Mount Okmok Alaska 1073 3520 53°26′0″N 168°8′0″W / 53.43333°N 168.13333°W 2008 60 Mount Recheschnoi Alaska 1984 6509 53°9′24″N 168°32′20″W / 53.15667°N 168.53889°W - 61 Mount Redoubt Alaska 3108 10,197 60°29′7″N 152°44′31″W / 60.48528°N 152.74194°W 2009 62 Mount Roundtop Alaska 1871 6138 54°48′0″N 163°35′20″W / 54.80000°N 163.58889°W - 63 Saint Michael (volcano) Alaska 715 2346 63°27′0″N 162°7′0″W / 63.45000°N 162.11667°W - 64 Saint Paul Island Alaska 203 666 57°11′0″N 170°18′0″W / 57.18333°N 170.30000°W 1280 BC ± 40 years 65 Mount Pavlof Alaska 2519 8264 55°25′0″N 161°53′15″W / 55.41667°N 161.88750°W 2016 66 Pavlof Sister Alaska 2142 7027 55°27′10″N 161°50′35″W / 55.45278°N 161.84306°W 1786 67 Pogromni Alaska 2002 6569 54°34′N 164°51′W / 54.57°N 164.85°W - 68 Roundtop Alaska 1871 6139 54°48′N 153°36′W / 54.80°N 153.60°W - 69 Mount Sanford Alaska 4949 16,237 62°13′0″N 144°8′0″W / 62.21667°N 144.13333°W - 70 Mount Seguam Alaska 1054 3458 52°18′55″N 172°35′30″W / 52.31528°N 172.59167°W 1993 71 Mount Segula Alaska 1160 3806 52°0′55″N 178°8′8″W / 52.01528°N 178.13556°W - 72 Mount Semisopochnoi Alaska 1221 4006 51°56′0″N 179°35′0″W / 51.93333°N 179.58333°W 1987 73 Mount Sergief Alaska 560 1837 52°2′0″N 174°56′0″W / 52.03333°N 174.93333°W - 74 Mount Shishaldin Alaska 2857 9373 54°45′20″N 163°58′0″W / 54.75556°N 163.96667°W 2004 75 Snowy Mountain Alaska 2162 7093 58°20′8″N 154°40′55″W / 58.33556°N 154.68194°W - 76 Mount Spurr Alaska 3374 11,069 61°17′58″N 152°15′4″W / 61.29944°N 152.25111°W 1992 77 St. Michael Alaska 715 2346 63°27′0″N 162°7′0″W / 63.45000°N 162.11667°W - 78 St. Paul Island Alaska 203 666 57°11′0″N 170°18′0″W / 57.18333°N 170.30000°W 1280 BC ± 40 years 79 Mount Steller Alaska 2272 7454 58°26′0″N 154°24′0″W / 58.43333°N 154.40000°W - 80 Mount Stepovak Alaska 1555 5102 55°56′0″N 160°0′0″W / 55.93333°N 160.00000°W - 81 Table Top-Wide Bay Alaska 792 2598 53°58′5″N 166°40′38″W / 53.96806°N 166.67722°W - 82 Mount Takawangha Alaska 1449 4754 51°52′22″N 178°0′20″W / 51.87278°N 178.00556°W - 83 Tana (Volcano) Alaska 1170 3839 52°49′48″N 169°16′12″W / 52.83000°N 169.27000°W - 84 Mount Tanaga Alaska 1806 5925 51°53′6″N 178°8′45″W / 51.88500°N 178.14583°W 1914 85 Tlevak Strait-Suemez Island Alaska 50 164 55°15′0″N 133°18′0″W / 55.25000°N 133.30000°W - 86 Trident Volcano Alaska 1864 6115 58°14′8″N 155°6′0″W / 58.23556°N 155.10000°W 1975 87 Ugashik-Peulik Alaska 1474 4836 57°45′3″N 156°22′5″W / 57.75083°N 156.36806°W 1814 88 Ukinrek Maars Alaska 91 299 57°49′54″N 156°30′35″W / 57.83167°N 156.50972°W 1977 89 Mount Uliaga Alaska 888 2913 53°3′54″N 169°46′0″W / 53.06500°N 169.76667°W - 90 Mount Veniaminof Alaska 2507 8225 56°10′0″N 159°23′0″W / 56.16667°N 159.38333°W 2006 91 Mount Vsevidof Alaska 2149 7050 53°7′48″N 168°41′35″W / 53.13000°N 168.69306°W 1957 92 Mount Westdahl Alaska 1654 5426 54°31′6″N 164°39′0″W / 54.51833°N 164.65000°W 1992 93 Yantarni Volcano Alaska 1345 4413 57°1′17″N 157°11′6″W / 57.02139°N 157.18500°W 800 BC ± 500 years 94 Mount Yunaska Alaska 550 1804 52°38′34″N 170°37′43″W / 52.64278°N 170.62861°W 1937 95 Prindle Volcano Alaska - - 63°43′N 141°37′W / 63.72°N 141.62°W Pleistocene 96 Mount Churchill Alaska 4766 15,632 61°15′N 141°42′W / 61.25°N 141.7°W 1250 years ago 97 Mount Drum Alaska 3661 12,010 62°06′N 144°30′W / 62.1°N 144.5°W - 98 Mount Jarvis Alaska 4091 13,422 62°1′4″N 143°37′2″W / 62.01778°N 143.61722°W - 99 Mount Wrangell Alaska 4317 14,163 62°00′N 144°01′W / 62.00°N 144.02°W 1999 100 Ta'u- American Samoa 931 3054 14°13′48″S 169°27′14″W / 14.23°S 169.454°W - 101 Ofu-Olosega American Samoa 639 2096 14°10′30″S 169°37′05″W / 14.175°S 169.618°W 1866 102 Tutuila American Samoa 653 2142 14°17′42″S 170°42′00″W / 14.295°S 170.70°W - 103 Vailulu'u American Samoa -592 -1842 14°17′42″S 170°42′00″W / 14.295°S 170.70°W - 104 Mount Baldy Arizona 3,480 11,420 33°54′22″N 109°33′46″W / 33.90611°N 109.56278°W 8-9 million years ago 105 Mount Elden Arizona 2,834 9,299 35°14′28″N 111°35′48″W / 35.24111°N 111.59667°W 250,000 years ago 106 Merriam Cone Arizona 2,077 6,813 35°18′N 111°18′W / 35.300°N 111.300°W 150,000 years ago 107 Red Mountain Arizona 2428 7965 - 740,000 years ago 108 San Francisco Mountain Arizona 3851 12,633 35°20′47″N 111°40′40″W / 35.34639°N 111.67778°W - 109 SP Crater Arizona 2141 7021 35°34′56″N 111°37′55″W / 35.58222°N 111.63194°W 71,000 years ago 110 Sunset Crater Arizona 2447 8026 35°21′51″N 111°30′11″W / 35.36417°N 111.50306°W 1122 ± 58 years 111 Amboy Crater California 300 984 34°32′38″N 115°47′28″W / 34.54389°N 115.79111°W 10,000 years ago 112 Big Cave California 1259 4131 40°57′18″N 121°21′54″W / 40.955°N 121.365°W Holocene 113 Black Butte California 1939 6362 41°22′01″N 121°20′53″W / 41.367°N 121.348°W 9,500 years ago 114 Brushy Butte California 1174 3852 41°10′41″N 121°26′35″W / 41.178°N 121.443°W Holocene 115 Burney Mountain California 2397 7863 40°48′24″N 121°37′41″W / 40.80667°N 121.628°W Pleistocene 116 Cima Volcanic Field California 1509 6925 35°15′N 115°45′W / 35.25°N 115.75°W 10,000 years ago 117 Cinder Cone and the Fantastic Lava Beds California 2105 6907 - 1680 118 Inyo Craters California 2629 8625 37°41′31″N 119°01′12″W / 37.692°N 119.02°W ~1400 119 Mount Konocti California 1312 4305 38°58′29″N 122°45′57″W / 38.9746°N 122.7659°W ~10,000 years ago 120 Lassen Peak California 3189 10,462 40°29′17″N 121°30′18″W / 40.48806°N 121.50500°W 1917 121 Lassen Volcanic Center California - - 40°29′30″N 121°30′30″W / 40.49167°N 121.50833°W 1917 122 Long Valley Caldera California 3390 11,122 37°36′N 118°48′W / 37.6°N 118.8°W Pleistocene 123 Malapai Hill California - - 33°54′N 116°00′W / 33.9°N 116.0°W - 124 Mammoth Mountain California 3371 11,059 37°38′N 119°02′W / 37.63°N 119.03°W ~1400 125 Medicine Lake Volcano California 2412 7913 41°22′N 121°20′W / 41.36°N 121.33°W 1080 ± 25 years 126 Mono Craters California 2,796 9,173 37°53′N 119°00′W / 37.88°N 119.00°W ~1350 127 Pinnacles California - - 36°29′13″N 121°10′01″W / 36.487°N 121.167°W 23 million years ago 128 Pisgah Crater California 774 2,539 34°44′47″N 116°22′30″W / 34.74639°N 116.37500°W 18,000 ± 5,000 years ago 129 Red Cones California 2,748 9,015 37°51′N 122°11′W / 37.85°N 122.19°W Holocene 130 Round Top California 538 1,764 37°35′N 119°03′W / 37.58°N 119.05°W 10 Million Years Ago 131 Mount Saint Helena California 1,323 4,342 38°40′10″N 122°38′01″W / 38.669341°N 122.633488°W 2.4 million years ago? 132 Mount Shasta California 4,317 14,162 41°24′32″N 122°11′35″W / 41.409°N 122.193°W 1786 133 Sutter Buttes California 650 2,130 39°12′20.61″N 121°49′12.9″W / 39.2057250°N 121.820250°W 1.5 million years ago 134 Tumble Buttes California 2,191 7,188 40°41′N 121°33′W / 40.68°N 121.55°W 15,000 years ago 135 Twin Buttes California 1631 5351 40°47′N 121°36′W / 40.78°N 121.60°W Holocene 136 Ubehebe Craters California 752 2467 37°01′N 117°27′W / 37.02°N 117.45°W 4050 BC 137 Dotsero Colorado 2,230 7,316 39°39′40″N 107°03′22″W / 39.661°N 107.056°W 2200 BC 138 La Garita Caldera Colorado - - 37°43′36″N 106°46′28″W / 37.72667°N 106.77444°W 26.3 Ma 139 Mount Sopris Colorado - - 39°23′46″N 104°45′34″W / 39.39611°N 104.75944°W 42.0 Ma 140 Never Summer Mountains Colorado 3,946 12,945 40°28′10″N 105°53′42″W / 40.46944°N 105.89500°W ~20 Ma 141 Diamond Head Hawaii 232 761 21°15′35″N 157°48′42″W / 21.25972°N 157.81167°W 148,000 BC 142 Haleakala or East Maui Volcano Hawaii 3055 10,023 20°43′N 156°15′W / 20.71°N 156.25°W between A.D. 1480 and 1600 143 Hanauma Bay Hawaii - 642 - 10,000 - 32,000 BP 144 Hualalai Hawaii 2521 8270 19°41′N 155°52′W / 19.69°N 155.87°W 1801 145 Ka'ena Point Hawaii - About 3,000 ft - 4.2 MYA 146 Kahoolawe Hawaii 450 1475 20°36′N 156°36′W / 20.6°N 156.6°W 1 MYA 147 Kawaikini Hawaii 1,598 5,243 22°03′24″N 159°29′48″W / 22.05667°N 159.49667°W 4 MYA 148 Kilauea Hawaii 1247 4091 19°27′07″N 155°17′31″W / 19.452°N 155.292°W 1983–Present 149 Kohala (mountain) Hawaii 1670 5480 20°5′10″N 155°43′2″W / 20.08611°N 155.71722°W 120,000 BP 150 Koko Guyot Hawaii - - - 50MYA 151 Koko Head Crater Hawaii 368 1207 - 10,000BP 152 Koʻolau Range Hawaii 941 3149 21°22′N 157°48′W / 21.37°N 157.80°W Holocene 153 Lanai Hawaii 1,026 3,366 - 1.2 MYA 154 Loihi Seamount Hawaii -975 -3199 18°55′N 155°15′W / 18.92°N 155.25°W 2007 155 Mahukona Hawaii - - 20°06′N 156°06′W / 20.1°N 156.1°W About 470,000 BP 156 Maui Hawaii 3055 10,023 - - 157 Mauna Kea Hawaii 4208 13,796 19°48′N 155°30′W / 19.8°N 155.5°W 2460 BC ± 100 years 158 Mauna Loa Hawaii 4169 13,679 19°30′N 155°36′W / 19.5°N 155.6°W 1984 159 Mount Ka'ala Hawaii 1342 4,025 21°30′25″N 158°08′34″W / 21.50694°N 158.14278°W 2.6 MA 160 Punchbowl Crater Hawaii - 546 - 10,000 -75,000 BC 161 Mount Waialeale Hawaii 1,544 5,066 - - 162 West Maui Volcano Hawaii 1,764 5,788 - Less than 500,000 BP 163 Big Southern Butte Idaho 2298 7540 43°14′N 113°01′W / 43.24°N 113.01°W 0.3 Ma 164 Blue Creek Idaho - - - - 165 Craters of the Moon Idaho 2005 6578 43°25′N 113°30′W / 43.42°N 113.50°W 130 BC ± 50 years 166 Henry's Fork Caldera Idaho 2805 9203 - 1.3 Ma 167 Island Park Caldera Idaho 2805 9203 44°20′N 111°20′W / 44.33°N 111.33°W 2.1 Ma 168 Juniper Buttes Idaho 1905 6250 44°12′N 111°32′W / 44.20°N 111.53°W - 169 Menan Buttes Idaho 1713 5619 43°36′N 111°30′W / 43.60°N 111.5°W 1.0 Ma 170 Split Butte Idaho - - - - 171 The Great Rift Idaho - - - - 172 Twin Peaks Idaho - - - - 173 Jackson Volcano Mississippi - - 32°N 90°W / 32°N 90°W 65 million years ago 174 Taum Sauk Caldera Missouri - 1772 37°31′44″N 90°47′10″W / 37.5288°N 90.7862°W 1.5 bya 175 Big Cottonwood Canyon Nevada - - - - 176 McDermitt Complex Nevada - - - - 177 Steamboat Springs Nevada 1415 4642 39°22′30″N 119°43′12″W / 39.375°N 119.72°W Pleistocene-Fumarolic 178 Soda Lakes Nevada 1251 4104 39°53′N 119°27′W / 39.883°N 119.450°W Holocene 179 Virgin Valley Nevada - - - - 180 Pawtuckaway Mountains New Hampshire - - 43°06′39″N 71°11′11″W / 43.11083°N 71.18639°W Cretaceous 181 Ossipee Mountains New Hampshire - - 43°44′37″N 71°16′26″W / 43.74361°N 71.27389°W Cretaceous 182 Capulin Volcano New Mexico 2,494 8,182 36°47′20″N 103°57′42″W / 36.78889°N 103.96167°W 58,000 - 52,000 years ago 183 Carrizozo Malpais New Mexico 1,731 5,679 33°47′N 105°56′W / 33.78°N 105.93°W 140,000 years ago 184 Cerros del Rio New Mexico 664 2,178 35°42′N 106°12′W / 35.7°N 106.2°W 2.2 million years ago 185 Jemez Mountains New Mexico 3,525 - 35°53′N 106°32′W / 35.88°N 106.53°W 60,000 - 50,000 years ago 186 Jornada del Muerto Volcano New Mexico 1,565 5,136 33°32′N 106°52′W / 33.533°N 106.867°W 760,000 years ago 187 Kilbourne Hole New Mexico 1,555 4,240 31°58′N 106°58′W / 31.97°N 106.97°W 80,000 years ago 188 El Malpais New Mexico - - 34°53′3″N 108°0′7″W / 34.88417°N 108.00194°W - 189 Sierra Blanca New Mexico 3,652 11,981 33°22′27″N 105°48′31″W / 33.37417°N 105.80861°W 26 million years ago 190 Mount Taylor New Mexico 2,445 11,300 35°14′19″N 107°36′30″W / 35.23861°N 107.60833°W 1,500,000 years ago 191 Valles Caldera New Mexico 3,430 11,253 35°52′N 106°34′W / 35.87°N 106.57°W Pleistocene 192 Agrigan Northern Mariana Islands 965 3165 18°48′N 145°42′E / 18.8°N 145.7°E - 193 Ahyi Seamount Northern Mariana Islands -137 -449 20°25′N 145°02′E / 20.42°N 145.03°E 2001 194 Alamagan Northern Mariana Islands 744 2441 17°36′N 145°50′E / 17.60°N 145.83°E 1887 195 Anatahan Northern Mariana Islands 788 2592 16°21′N 145°40′E / 16.35°N 145.67°E 2006 196 Asuncion Island Northern Mariana Islands 857 2810 19°42′N 145°24′E / 19.7°N 145.4°E - 197 Esmeralda Bank Northern Mariana Islands -43 -141 15°00′N 145°15′E / 15.00°N 145.25°E - 198 Farallon de Pajaros Northern Mariana Islands 360 1,180 20°30′N 144°54′E / 20.5°N 144.9°E 1967 199 Guguan Northern Mariana Islands 287 942 17°19′N 145°50′E / 17.32°N 145.83°E 1883 200 Maug Islands Northern Mariana Islands 227 745 20°01′N 145°13′E / 20.02°N 145.22°E Quaternary 201 Mount Tapochau Northern Mariana Islands 474 1554 - - 202 Northwest Rota-1 Northern Mariana Islands -517 -1696 14°36′04″N 144°46′30″E / 14.601°N 144.775°E 2004 203 Pagan Island Northern Mariana Islands 570 1870 18°06′N 145°46′E / 18.10°N 145.76°E 1993 204 Mount Rodondi Island Northern Mariana Islands 205 Sarigan Northern Mariana Islands 538 1765 16°42′29″N 145°46′48″E / 16.708°N 145.78°E - 206 Supply Reef Northern Mariana Islands -8 -26 20°08′N 145°06′E / 20.13°N 145.10°E 1989 207 Mount Bachelor Oregon 2,763 9,064 43°58′45.90″N 121°41′18.63″W / 43.9794167°N 121.6885083°W 5800 BC ± 1000 years 208 Bald Mountain Caldera Oregon - - 43°25′N 121°25′W / 43.417°N 121.417°W - 209 Mount Bailey Oregon 2,551 8,368 43°9′18.52″N 122°13′11.98″W / 43.1551444°N 122.2199944°W - 210 Belknap Crater Oregon 2,095 6,873 44°17′05.80″N 121°50′32.04″W / 44.2849444°N 121.8422333°W 460 AD 211 Black Butte Oregon 1,962 6,436 44°23′59.0″N 121°38′07.7″W / 44.399722°N 121.635472°W About 1,430,000 years ago 212 Blue Lake Crater Oregon 1,230 4,035 44°24′40″N 121°46′26″W / 44.411°N 121.774°W 680 ± 200 213 Broken Top Oregon 2,800 9,185 44°04′58″N 121°41′59″W / 44.08278°N 121.69972°W - 214 Brown Mountain Oregon - - 42°22′N 122°16′W / 42.36°N 122.27°W >12,000 years ago 215 Cinnamon Butte Oregon 1956 6417 43°14′28″N 122°06′29″W / 43.241°N 122.108°W >6845 years ago 216 Columbia River Basalt Group Oregon - - - - 217 Crater Lake or Mount Mazama Oregon 2,487 8,159 42°56′N 122°07′W / 42.93°N 122.12°W ~2290 BC 218 Crooked River caldera Oregon - - - 29.5 Ma 219 Diamond Craters Oregon 1,450 4,750 43°06′N 118°42′W / 43.1°N 118.7°W - 220 Diamond Peak Oregon 2,665 8,744 43°31′14.5″N 122°08′58.5″W / 43.520694°N 122.149583°W >11,000 years ago 221 Fort Rock Oregon 1,716 5,628 43°22′27″N 121°04′08″W / 43.37417°N 121.06889°W - 222 Gorda Ridge Oregon -3,000 -9,842 42°40′N 126°47′W / 42.67°N 126.78°W 1996 223 Gray Butte Oregon - - 44°30′N 121°18′W / 44.5°N 121.3°W - 224 Mount Hood Oregon 3,426 11,237 45°22′24.65″N 121°41′45.31″W / 45.3735139°N 121.6959194°W 1866 [5] 225 Jackies Butte Oregon 1,418 4,652 42°36′22″N 117°35′20″W / 42.606°N 117.589°W - 226 Mount Jefferson Oregon 3199 10,492 44°42′N 121°48′W / 44.7°N 121.8°W 950 AD 227 Jordan Craters Oregon 1400 4600 43°08′49″N 117°27′36″W / 43.147°N 117.460°W 1250 BC 228 Maiden Peak Oregon 2,380 7,810 43°37′37″N 121°57′50″W / 43.62694°N 121.96389°W - 229 McDermitt Complex Oregon - - - - 230 Mahogany Mountain Oregon - - - - 231 Mount McLoughlin Oregon 2,894 9,492 42°26′40.10″N 122°18′56.23″W / 42.4444722°N 122.3156194°W - 232 Middle Sister Oregon 3,063 10,050 44°09′N 121°47′W / 44.150°N 121.783°W - 233 Newberry Caldera Oregon 2,434 7,986 43°42′N 121°30′W / 43.7°N 121.5°W - 234 North Sister Oregon 3,075 10,090 44°10′N 121°46′W / 44.167°N 121.767°W - 235 Olallie Butte Oregon 2,200 7,219 44°49′18.1″N 121°45′50.2″W / 44.821694°N 121.763944°W more than 25,000 years ago 236 Pelican Butte Oregon - - 42°31′N 122°04′W / 42.51°N 122.06°W - 237 Rocky Butte Oregon - - - - 238 Round Butte Oregon - - 44°30′N 121°00′W / 44.5°N 121.0°W - 239 Saddle Butte Oregon 1,700 - 43°00′N 117°48′W / 43.00°N 117.80°W Holocene 240 South Sister Oregon 3,158 10,360 44°06′N 121°46′W / 44.100°N 121.767°W - 241 South-Central Oregon Volcanics Oregon - - - - 242 Strawberry Volcanics Oregon - - 44°12′N 118°48′W / 44.2°N 118.8°W - 243 Mount Tabor Oregon - 636 - - 244 Mount Thielsen Oregon 2,800 9,184 43°09′10.21″N 122°03′59.45″W / 43.1528361°N 122.0665139°W - 245 Three Fingered Jack Oregon 2,390 7,840 44°28′42″N 121°50′29″W / 44.47833°N 121.84139°W - 246 Tower Mountain caldera Oregon - - - 247 Mount Washington Oregon 2,376 7,790 44°19′55″N 121°50′13″W / 44.332°N 121.837°W 670 AD 248 Western Cascades Oregon - - - 5-0.5 million years ago 249 Wildcat Mountain caldera Oregon - - - 250 Bear Butte South Dakota 1,349 4,426 44°28′33″N 103°25′37″W / 44.475833°N 103.426944°W - 251 Pilot Knob Texas 169 554 30°09′43″N 97°42′22″W / 30.162°N 97.706°W late Cretaceous 252 Bald Knoll Utah 2,135 7,005 37°19′41″N 112°24′29″W / 37.328°N 112.408°W Holocene 253 Fumarole Butte Utah 1,609 5,279 39°36′54″N 112°48′11″W / 39.615°N 112.803°W 900,000 years ago 254 Pavant Butte Utah 1,800 5,906 39°07′35″N 112°33′08″W / 39.1263°N 112.5521°W 16,000 years ago 255 Black Rock Desert volcanic field Utah 1,800 5,904 38°58′12″N 112°30′00″W / 38.970°N 112.500°W 600–900 years ago 256 Santa Clara Utah 1,465 4,806 37°15′25″N 113°37′30″W / 37.257°N 113.625°W - 257 Mole Hill Virginia - - 38°26′55″N 78°57′12″W / 38.44861°N 78.95333°W 47 million years ago 258 Trimble Knob Virginia - - 38°24′17″N 79°35′16″W / 38.40472°N 79.58778°W 35 million years ago 259 Battle Ground Lake Washington 229 750 45°48′19″N 122°39′29″W / 45.80528°N 122.65806°W - 260 Black Buttes Washington - - 48°46′09″N 121°51′10″W / 48.7692861°N 121.8526467°W 500,000 to 300,000 years ago 261 Mount Adams Washington 3,743 12,281 46°12′09″N 121°29′27″W / 46.20250°N 121.49083°W 500 BC ± 1000 years 262 Mount Baker Washington 3,285 10,778 48°46′38″N 121°48′48″W / 48.77722°N 121.81333°W 1880 263 Glacier Peak Washington 3,213 10,541 48°06′45″N 121°06′50″W / 48.11250°N 121.11389°W ~17th-18th Century 264 Goat Rocks Washington 2,494 8,184 46°30′N 121°27′W / 46.50°N 121.45°W - 265 Indian Heaven Washington 1,513 5,925 45°56′N 121°49′W / 45.93°N 121.82°W ~6250 BC 266 Lone Butte Washington - - 46°03′16″N 121°50′21″W / 46.05444°N 121.83917°W - 267 Marble Mountain-Trout Creek Hill volcanic zone Washington - - 45°54′N 122°00′W / 45.9°N 122.0°W ~7700 years ago 268 Mount Rainier Washington 4,392 14,411 46°51′11″N 121°45′35″W / 46.85306°N 121.75972°W 1894 269 Mount St. Helens Washington 2,550 8,364 46°11′28″N 122°11′39″W / 46.19111°N 122.19417°W 2008 270 Silver Star Mountain Washington 1,330 4,364 45°44′51.8″N 122°14′20.5″W / 45.747722°N 122.239028°W - 271 Simcoe Mountains Washington - - 46°06′N 120°54′W / 46.1°N 120.9°W - 272 Trout Creek Hill Washington 890 2,920 45°50′11″N 121°59′41″W / 45.8365040°N 121.9948065°W 340,000 years ago 273 West Crater Washington 1,329 4,360 45°53′N 122°05′W / 45.88°N 122.08°W 5750 BC 274 White Chuck Cinder Cone Washington 1,830 6,002 48°03′N 121°10′W / 48.05°N 121.17°W 275 Yellowstone caldera Wyoming 2,805 9,203 44°26′N 110°40′W / 44.43°N 110.67°W 70,000 years ago (magmatic) / 1350 BC ± 200 years (hydrothermal)