全国人口密度图，图上的每一个圆点代表该地约有100人在家使用这种语言。
用户还可通过聚焦放大，查看地域内小范围的情况，这时每一个圆点代表10人。为了保护语言群体的私密性，这些小圆点在人口普查分区内的安置带有随机性。
使用非英语语言的人口增长
报告根据某些社会和人口统计特征，提供了有关在家使用非英语语言的人口比例及其英语能力的资料。报告显示，
5岁和5岁以上在家使用非英语语言的美国居民中，超过一半（58%）的人同时能说“很好”的英语。
来自美国社区调查的这些数据提供了全国、各州、大都市以及小城镇等地的有关数据。
报告表明，英语“不是很好”的人口比例从2000年的8.1%上升到2007年的8.7%，
2011年保持在8.7%。在家使用非英语语言的人口比例从2000年的17.9%上升到2007年的19.7%，并一直呈上升趋势，2011年达20.8%。
2011年，在6,060万在家使用非英语语言的人口中，将近三分之二（3,760万）使用西班牙语。
在家使用西班牙语的人口比例从2005年的12%上升到2011年的12.9%，反映了总的趋势。然而与这个总趋势相反的是，同期在家使用西班牙语但英语“不是很好”的人口比例从5.7%下降到5.6%。
近期使用非英语语言的人口增长延续了过去30年的趋势。从1980年到2010年，使用非英语语言的人数增长了158%。
在最常用的17种语言中，使用越南语的人口增长最快，增加了7倍。使用西班牙语的人数增加得最多（2,590万）。与此形成对比的是，使用意大利语、德语、波兰语、意第绪语（Yiddish）或希腊语的人数同期出现下降。
报告的其他要点
·除了英语和西班牙语，至少有100万人在家使用6种其他语言：汉语（290万），他加禄语（160万），越南语（140万），法语（130万），德语（110万）和韩语（110万）。
·各州在家使用非英语语言的人口比例差别很大，如在加利福尼亚州（California），这个类别的人口占44%，而在西弗吉尼亚州（West
Virginia）只占2%。
·在得克萨斯州（Texas）的拉雷多（Laredo），5岁和5岁以上居民在家使用非英语语言的人数占92%，领先所有城市地区。
·在西部、南部和东北部的大中城市地区，在家使用非英语语言的人口比例往往比较高，在中西部比例比较低，但伊利诺伊州（Illinois）除外。
·在使用西班牙语的群体中，45%国外出生的归化公民能讲“很好”的英语，而在国外出生的非公民中，这个比例只有23%。在本土出生并至少拥有学士学位或不属贫困人口的群体更有可能讲“很好”的英语。
·80%或更多使用法语和德语的群体能说“很好”的英语。与此形成对比的是，在使用韩语、汉语或越南语的人中，低于50%的人能说“很好”的英语。在使用西班牙语的群体中，这个比例是56%。
美国社区调查
作为数据来源的美国社区调查提供了关于美国所有社区人员和住房等一系列广泛的重要统计资料。统计结果可供乡镇和城市规划人员、零售商和住房建筑商等各方面的人员使用。在地方估算报告所列的40个分项中，美国社区调查是提供大多数数据的唯一来源。地方估算报告涉及教育、职业、语言、族谱和住房成本等方面，规模最小的社区也包含在内。
1790年，时任国务卿的托马斯·杰弗逊（Thomas
Jefferson）指示进行美国第一次人口普查，历年收集关于美国居民的详细资料。20年后，詹姆斯·麦迪逊（James
Madison）总统执政时期，又增加了关于就业和经济的问询。麦迪逊说，此类信息有助于美国国会“调整公共措施以适合于社区的具体情况”，通过数十年的积累使美国“有机会记录社会的进步”。
“
2011语种分布图”和《
美国常用语种：2011》（PDF，1.39MB）见美国人口普查局网站。
Read more:
http://iipdigital.usembassy.gov/st/chinese/article/2013/08/20130814280947.html#ixzz2c6jPqBO8
New Interactive Map Shows Languages Spoken in America
08 August 2013
The U.S. Census Bureau’s “2011 Language Mapper,”
an interactive online map, shows languages spoken across the United
States.
Washington — The U.S. Census Bureau released an interactive, online
map August 6 pinpointing the wide array of languages spoken in
homes across the United States, along with a detailed report on
rates of English proficiency and the growing number of speakers of
other languages.
The map and the report,
Language Use in the United States:
2011, were described in a Commerce Department blog post the
same day. The U.S. Census Bureau is part of the Commerce
Department.
The report shows that Spanish and Chinese are the top non-English
languages spoken in the United States, and most of the U.S.
population is English-proficient.
“This study provides evidence of the growing role of languages
other than English in the national fabric,” said Camille Ryan, a
statistician in the Census Bureau’s Education and Social
Stratification Branch and the report’s author.
“Yet, at the same time that more people are speaking languages
other than English at home, the percentage of people speaking
English proficiently has remained steady.”
The map, called the “2011 Language Mapper,” shows where people
speaking specific languages other than English live, with dots
representing how many people speak each of 15 different languages.
For each language, it shows the concentration of those who say they
speak English less than “very well,” a measure of English
proficiency. The tool uses data collected through the American
Community Survey from 2007 to 2011.
The languages available in the interactive map include Spanish,
French, French Creole, Italian, Portuguese, German, Russian,
Polish, Persian, Chinese, Japanese, Korean, Vietnamese, Tagalog and
Arabic. After selecting one of these languages from the menu, users
will see a national population density map, with each dot
representing about 100 people who speak the language at home placed
where these speakers are concentrated.
The map also allows users to zoom in to a smaller geographic area,
where each dot represents 10 people. The dots were placed in a
random location within census tracts to protect the confidentiality
of speakers.
INCREASE IN NON-ENGLISH SPEAKERS
The report details the number of people speaking languages other
than English at home and their ability to speak English, by
selected social and demographic characteristics. It shows that more
than half (58 percent) of U.S. residents 5 and older who speak a
language other than English at home also speak English “very
well.”
The data, taken from the American Community Survey, are provided
for the whole country, states and metropolitan and micropolitan
areas.
The report shows that the percent speaking English “less than very
well” grew from 8.1 percent in 2000 to 8.7 percent in 2007, but
stayed at 8.7 percent in 2011. The percent speaking a language
other than English at home went from 17.9 percent in 2000 to 19.7
percent in 2007, while continuing upward to 20.8 percent in
2011.
Of the 60.6 million people who spoke a language other than English
at home in 2011, almost two-thirds (37.6 million) spoke
Spanish.
Reflecting the overall trend, the percentage speaking Spanish at
home grew from 12.0 percent in 2005 to 12.9 percent in 2011. In
contrast to the overall trend, however, the percent who spoke
Spanish at home but spoke English “less than very well” declined
from 5.7 percent to 5.6 percent over the period.
The recent increase in non-English speakers continues a trend
dating back three decades. Between 1980 and 2010, the number of
people speaking a language other than English climbed 158
percent.
The highest percentage jump among 17 of the most common languages
was the sevenfold increase in Vietnamese speakers, while Spanish
speakers posted the largest numerical gain (25.9 million). In
contrast, the number speaking Italian, German, Polish, Yiddish or
Greek declined over the period.
OTHER HIGHLIGHTS OF THE REPORT
• In addition to English and Spanish, there were six languages in
2011 spoken at home by at least 1 million people: Chinese (2.9
million), Tagalog (1.6 million), Vietnamese (1.4 million), French
(1.3 million), German (1.1 million) and Korean (1.1 million).
• The prevalence of people speaking non-English languages at home
varied widely across states, from 44 percent of the population in
California to 2 percent in West Virginia.
• Laredo, Texas, led all metro areas, with 92 percent of residents
age 5 and older speaking a language other than English at
home.
• Metro and micro areas in the West, South and Northeast tended to
have higher levels of people speaking non-English languages at
home. Those in the Midwest tended to have lower levels, with the
exception of Illinois.
• Of Spanish speakers, 45 percent of foreign-born naturalized
citizens spoke English “very well,” compared with 23 percent of
foreign-born noncitizens. Those who were native-born, had at least
a bachelor’s degree or were not in poverty were more likely to
speak English “very well.”
• Eighty percent or more of French and German speakers spoke
English “very well.” In contrast, less than 50 percent of those who
spoke Korean, Chinese or Vietnamese spoke English “very well.” The
rate for Spanish speakers was 56 percent.
THE AMERICAN COMMUNITY SURVEY
The American Community Survey, which supplied the data, provides a
wide range of important statistics about people and housing for
every community across the United States. The results are used by
everyone from town and city planners to retailers and homebuilders.
It is the only source of local estimates for most of the 40 topics
it covers, such as education, occupation, language, ancestry and
housing costs for even the smallest communities.
Since then–Secretary of State Thomas Jefferson directed the first
U.S. census in 1790, the census has collected detailed
characteristics about the country’s residents. Questions about jobs
and the economy were added 20 years later under President James
Madison, who said such information would allow the U.S. Congress to
“adapt the public measures to the particular circumstances of the
community,” and over the decades allow America “an opportunity of
marking the progress of the society.”
The “
2011 Language Mapper” and
Language Use in the United States: 2011 (PDF,
1.39MB) are available on the U.S. Census Bureau website.
Read more:
http://iipdigital.usembassy.gov/st/english/article/2013/08/20130808280294.html#ixzz2c6jcPaHq
