PER CAPITA INCOME and AGGREGATE INCOME IN THE PAST 12 MONTHS (IN INFLATION-ADJUSTED DOLLARS)

Table from the American Community Survey (ACS) B19301 and B19313 per capita and aggregate income. 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): B19301 and B19313 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.本数据集表格源自美国社区调查（American Community Survey, ACS）的B19301与B19313表，涵盖人均收入与总收入相关统计内容。其包含自2010年起的多期不重叠5年期ACS人口与住房属性估计值，对应不同普查区（census tract）版本，同时纳入最新的年度发布数据。 数据集覆盖华盛顿州金县的普查区，采用自2010年起的不重叠5年期ACS估计值版本，版本信息在「ACS版本（ACS Vintage）」字段中标注。普查区边界与ACS数据版本相匹配（当前为2010与2020版本），请注意十年间的地理边界变更情况。 普查区已被编码为西雅图市内区域，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，旨在提供跨时间一致的地理区域以用于美国人口普查局数据的发布，并非用于识别社区自身定义的邻里边界。 数据版本包括：2010、2015、2020、2021、2022、2023、2024。 涉及ACS表：B19301与B19313 数据下载来源：美国人口普查局「探索普查数据（Explore Census Data）」平台 美国人口普查局美国社区调查（ACS）：关于调查、地理与ACS技术文档、新闻与更新 该即用图层可在ArcGIS Pro、ArcGIS Online、其可配置应用、仪表板、故事地图（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。使用此数据时，请注明引用美国人口普查局与ACS。 ### 普查局数据说明 数据基于抽样调查，受抽样变异性影响。抽样变异性带来的估计值不确定性通过误差边际（margin of error）体现，此处展示的为90%置信水平的误差边际。误差边际可理解为：估计值减去误差边际与估计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估计值还受非抽样误差影响（关于非抽样变异性的讨论详见《数据准确性》文档），此类误差的影响未在本表中体现。 ### 数据处理说明 边界数据来自美国人口普查局TIGER地理数据库，具体为国家级次州地理数据库（命名格式为`tlgdb_(年份)_a_us_substategeo.gdb`）。边界随数据更新同步更新（每年一次），且边界版本与普查局指定的数据版本完全匹配。 为制图与绘图需求，普查边界中的水域及海岸线已被移除。对于普查区，水域裁剪范围源自TIGER提供的2020年面积水文边界子集。面积≥5000万平方米的水体与河流（中大型水体）及其他重要地物已从普查区边界中移除。对于州与县级边界，水域与海岸线源自2020年50万比例尺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。原始的AWATER与ALAND字段仍作为属性保留在数据表中（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（Washington D.C.）及波多黎各（Puerto Rico）。 本数据服务中已移除位于水域区域（如海洋）的无人口普查区（以99开头的普查区）。 百分比与派生计数及相关误差边际为计算所得值（可通过字段名中的「_calc_」前缀识别），并遵循美国社区调查的相关规范。字段别名基于美国社区调查汇总文件文档页面中提供的表壳（Table Shells）文件生成。 除-5555…已被设置为0外，其余负值（如-4444…）均已被设置为空值。此类负值在原始API数据中用于表示以下情况： 1. 误差边际列显示：无足够抽样观测值可计算标准误，因此无法计算误差边际，不适宜进行统计检验； 2. 无足够抽样观测值可计算估计值，或无法计算中位数之比，因为其中一个或两个中位数估计值落在开放分布的最低区间或最高区间； 3. 中位数落在开放分布的最低区间或最高区间； 4. 不适宜进行统计检验； 5. 估计值为受控值，不适宜进行抽样变异性的统计检验； 6. 该地理区域的数据无法展示，因为抽样案例数量过少。