美国本土位于北美洲中部，领土还包括北美洲西北部的阿拉斯加和太平洋中部的夏威夷群岛等。全国国土面积9,629,091平方公里（中华人民共和国国家统计局、美国国家总审计局），次于俄罗斯与加拿大。其北与加拿大接壤，南靠墨西哥湾，西临太平洋，东濒大西洋。海岸线22,680公里。大部分地区属于温带大陆性气候，南部属亚热带气候，东部沿海地区分布有温带海洋性气候和地中海气候。中北部平原（中央大平原）温差很大，芝加哥1月平均气温-3℃，7月24℃；墨西哥湾沿岸1月平均气温11℃，7月28℃。全国最低点为死亡谷（Death Valley，-86 米），最高点为麦金利山（Mount Mckinley，6,198 米）。
The United States is located in North America, Central, territory includes North America, Alaska and the northwest Hawaiian Islands, the central Pacific. National land area of 9,629,091 square kilometers (National Bureau of Statistics, the National General Accounting Office), behind Russia and Canada. Its northern border with Canada, south through the Gulf of Mexico, the west Pacific Ocean, east Atlantic Ocean. Coastline of 22,680 kilometers. Most regions of the temperate continental climate, the southern subtropical climate, distributed in the eastern coastal temperate maritime climate and Mediterranean climate. North Central Plain (central Great Plains) a great difference in temperature in Chicago in January average temperature of -3 ℃, 7 Yue 24 ℃; the Gulf Coast in January average temperature of 11 ℃, 7 Yue 28 ℃. The lowest point of Death Valley National (Death Valley, -86 m), highest point Mount McKinley (Mount Mckinley, 6,198 m).
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