SEX BY AGE (B01001)

Table from the American Community Survey (ACS) B01001 of total population count by sex and age group. 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): B01001 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.本数据集源自美国社区调查（American Community Survey, ACS）B01001表，按性别与年龄组统计总人口数。本次提供2010年起多批次不重叠的5年期ACS人口与住房属性估算数据，以对应普查区（census tract）版本呈现，同时包含年度最新发布的数据。本数据集涵盖华盛顿州金县的普查区，采用2010年起的不重叠5年期ACS估算数据版本，数据版本在"ACS Vintage"字段中标识。普查区边界与ACS数据版本相匹配（当前为2010与2020版），请注意十年间的地理边界变更情况。 普查区已被编码为属于西雅图市范畴，并被分配至名为"社区报告区域（Community Reporting Areas）"的邻里群组。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单元以用于美国人口普查局数据的发布，并非用于还原社区自身定义的边界。 数据版本包括：2010、2015、2020、2021、2022、2023、2024。 所用ACS表为B01001。 数据下载自美国人口普查局的"Explore Census Data"平台。 关于美国社区调查（ACS）的更多信息，可参考美国人口普查局官网的调查介绍、地理与ACS技术文档、新闻与更新板块。 本数据集为可直接使用的地理图层，可在ArcGIS Pro、ArcGIS Online及其配置型应用、仪表盘、故事地图、自定义应用与移动应用中使用，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相关内容。 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。由抽样变异性带来的估算不确定性通过误差边际（margin of error）体现，此处展示的为90%置信水平下的误差边际。误差边际可理解为：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（即置信上下限）有90%的概率包含真实数值。除抽样变异性外，ACS估算数据还存在非抽样误差（相关讨论可参见《数据准确性》章节），此类误差的影响未在本数据表中体现。 数据处理说明： 边界数据源自美国人口普查局TIGER地理数据库，具体为国家次州地理数据库（命名格式为`tlgdb_(年份)_a_us_substategeo.gdb`）。边界数据与数据更新同步（每年更新），且边界版本与美国人口普查局指定的数据版本相匹配。 为制图与地图绘制需求，本数据集已移除普查区边界中的水体与海岸线：针对普查区，水体裁剪范围源自TIGER提供的2020年面状水文边界子集，面积不小于5000万平方米的大中型水体与河流，以及其他重要地理要素均已从普查区边界中移除；针对州与县级边界，水体与海岸线源自2020年500k TIGER制图边界形状文件的海岸线，经移除后可更精准地呈现海岸线与五大湖区域。原始的AWATER与ALAND字段（单位为平方米）仍作为属性保留在数据表中。 州图层包含52条记录，涵盖美国所有州、哥伦比亚特区与波多黎各。 本数据服务中已移除水域区域（如海洋）内无人口的普查区（即编号以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（字段名带有"_calc_"前缀），符合美国社区调查的规范要求。字段别名基于美国社区调查汇总文件文档页面提供的表框架文件生成。 负值（例如-4444...）已被设置为空值，唯有-5555...被设置为0。原始API数据中的此类负值代表以下场景： 1. 误差边际列显示：无可用抽样观测值或抽样观测值过少，无法计算标准误与误差边际，不适合进行统计检验； 2. 无可用抽样观测值或抽样观测值过少，无法计算估算值；或因其中一个或两个中位数估算值落在开放分布的最低区间或最高区间，无法计算中位数比率； 3. 中位数落在开放分布的最低区间或最高区间； 4. 不适合进行统计检验； 5. 估算值为受控值，不适合进行抽样变异性统计检验； 6. 本地理区域的样本量过小，无法展示数据。