LANGUAGE SPOKEN AT HOME FOR THE POPULATION 5 YEARS AND OVER (C16001)

Table from the American Community Survey (ACS) C16001 of language spoken at home for the population 5 years and over. These are multiple, nonoverlapping vintages of the 5-year ACS estimates of population and housing attributes starting in 2010 shown by the corresponding census tract vintage. Also includes the most recent release annually. King County, Washington census tracts with nonoverlapping vintages of the 5-year American Community Survey (ACS) estimates starting in 2010. Vintage identified in the "ACS Vintage" field. The census tract boundaries match the vintage of the ACS data (currently 2010 and 2020) so please note the geographic changes between the decades. Tracts have been coded as being within the City of Seattle as well as assigned to neighborhood groups called "Community Reporting Areas". These areas were created after the 2000 census to provide geographically consistent neighborhoods through time for reporting U.S. Census Bureau data. This is not an attempt to identify neighborhood boundaries as defined by neighborhoods themselves. Vintages: 2010, 2015, 2020, 2021, 2022, 2023, 2024 ACS Table(s): C16001 Data downloaded from: Census Bureau's Explore Census Data The United States Census Bureau's American Community Survey (ACS): About the Survey Geography & ACS Technical Documentation News & Updates This ready-to-use layer can be used within ArcGIS Pro, ArcGIS Online, its configurable apps, dashboards, Story Maps, custom apps, and mobile apps. Data can also be exported for offline workflows. Please cite the Census and ACS when using this data. Data Note from the Census: Data are based on a sample and are subject to sampling variability. The degree of uncertainty for an estimate arising from sampling variability is represented through the use of a margin of error. The value shown here is the 90 percent margin of error. The margin of error can be interpreted as providing a 90 percent probability that the interval defined by the estimate minus the margin of error and the estimate plus the margin of error (the lower and upper confidence bounds) contains the true value. In addition to sampling variability, the ACS estimates are subject to nonsampling error (for a discussion of nonsampling variability, see Accuracy of the Data). The effect of nonsampling error is not represented in these tables. Data Processing Notes: Boundaries come from the US Census TIGER geodatabases, specifically, the National Sub-State Geography Database (named tlgdb_(year)_a_us_substategeo.gdb). Boundaries are updated at the same time as the data updates (annually), and the boundary vintage appropriately matches the data vintage as specified by the Census. These are Census boundaries with water and/or coastlines erased for cartographic and mapping purposes. For census tracts, the water cutouts are derived from a subset of the 2020 Areal Hydrography boundaries offered by TIGER. Water bodies and rivers which are 50 million square meters or larger (mid to large sized water bodies) are erased from the tract level boundaries, as well as additional important features. For state and county boundaries, the water and coastlines are derived from the coastlines of the 2020 500k TIGER Cartographic Boundary Shapefiles. These are erased to more accurately portray the coastlines and Great Lakes. The original AWATER and ALAND fields are still available as attributes within the data table (units are square meters). The States layer contains 52 records - all US states, Washington D.C., and Puerto Rico Census tracts with no population that occur in areas of water, such as oceans, are removed from this data service (Census Tracts beginning with 99). Percentages and derived counts, and associated margins of error, are calculated values (that can be identified by the "_calc_" stub in the field name), and abide by the specifications defined by the American Community Survey. Field alias names were created based on the Table Shells file available from the American Community Survey Summary File Documentation page. Negative values (e.g., -4444...) have been set to null, with the exception of -5555... which has been set to zero. These negative values exist in the raw API data to indicate the following situations: The margin of error column indicates that either no sample observations or too few sample observations were available to compute a standard error and thus the margin of error. A statistical test is not appropriate. Either no sample observations or too few sample observations were available to compute an estimate, or a ratio of medians cannot be calculated because one or both of the median estimates falls in the lowest interval or upper interval of an open-ended distribution. The median falls in the lowest interval of an open-ended distribution, or in the upper interval of an open-ended distribution. A statistical test is not appropriate. The estimate is controlled. A statistical test for sampling variability is not appropriate. The data for this geographic area cannot be displayed because the number of sample cases is too small.本数据集取自美国社区调查（American Community Survey, ACS）的C16001表格，统计对象为5岁及以上人口的家庭使用语言情况。其包含多套互不重叠的2010年起的五年期ACS人口与住房属性估算值，对应各普查区（census tract）的年代版本，同时也纳入了最新的年度发布数据。 华盛顿州金县的普查区数据涵盖2010年起的互不重叠的五年期ACS估算值，数据年代版本通过"ACS Vintage"字段标识。普查区边界与ACS数据的年代版本相匹配（当前为2010年与2020年版本），请注意十年间的地理边界变化。 普查区被编码为属于西雅图市范围，并被分配至名为"社区报告区域（Community Reporting Areas）"的邻里分组。此类区域于2000年人口普查后设立，旨在构建长期地理一致的邻里区域，用于发布美国人口普查局的数据，并非用于识别居民自发定义的邻里边界。 可用数据年代包括2010、2015、2020、2021、2022、2023、2024年。使用的ACS表格为C16001。 数据下载来源为美国人口普查局的"Explore Census Data"平台。 相关资源包括：美国社区调查（ACS）介绍、地理与ACS技术文档、新闻与更新。 本数据集为即用型图层，可在ArcGIS Pro、ArcGIS Online及其可配置应用、仪表板、Story Maps、自定义应用及移动应用中使用。数据也可导出用于离线工作流程。使用本数据时请引用美国人口普查局与ACS相关成果。 美国人口普查局的数据说明： 本数据基于抽样调查，存在抽样变异性（sampling variability）。由抽样变异性导致的估算值不确定程度通过误差边际（margin of error）体现。此处展示的为90%置信水平的误差边际，其含义为：估算值减去误差边际与估算值加上误差边际所构成的区间（即上下置信边界（confidence bounds））有90%的概率包含真实数值。除抽样变异性外，ACS估算值还存在非抽样误差（nonsampling error），非抽样变异性的相关讨论详见《数据准确性》文档，本表格未体现非抽样误差的影响。 数据处理说明： 本数据集的边界源自美国人口普查局的TIGER地理数据库（TIGER geodatabases），具体为全国次州地理数据库（National Sub-State Geography Database），命名格式为`tlgdb_(year)_a_us_substategeo.gdb`。边界随数据同步更新（每年更新一次），且边界年代与普查局指定的数据年代完全匹配。为制图与绘图需求，本数据集移除了普查区边界中的水体及海岸线要素。对于普查区，水体裁剪源自TIGER提供的2020年面状水文边界（Areal Hydrography boundaries）子集：面积大于等于5000万平方米的大中型水体及其他重要要素将被从普查区边界中移除。对于州与县级边界，水体及海岸线源自2020年500k分辨率TIGER制图边界形状文件的海岸线数据，移除后可更精准地呈现海岸线与五大湖区域。数据表格中仍保留原始的AWATER与ALAND字段，单位为平方米。 州图层包含52条记录，涵盖美国所有州、华盛顿哥伦比亚特区及波多黎各。 本数据服务已移除水域区域（如海洋）内无人口的普查区，即以99开头的普查区。 百分比与衍生计数及相关误差边际为计算所得值，字段名称中带有"_calc_"前缀，严格遵循美国社区调查的规范定义。字段别名基于美国社区调查汇总文件文档页面中的表格框架文件生成。 负值（如-4444...）已被设置为空值，但-5555...除外，此类值已被设置为0。原始API数据中的此类负值用于标识以下情形： 1. 误差边际列表明无可用样本观测值或样本观测值过少，无法计算标准误及误差边际，此时不适合进行统计检验。 2. 无可用样本观测值或样本观测值过少，无法计算估算值；或无法计算中位数比率，因为其中一个或两个中位数估算值落在开放式分布的最低区间或最高区间内。 3. 中位数落在开放式分布的最低区间或最高区间内。 4. 不适合进行统计检验。 5. 估算值已受控，不适合进行抽样变异性统计检验。 6. 本地理区域的数据无法展示，因为样本案例数量过少。