ACS Marital Status Boundaries

Overview This feature service provides boundary-based census geography enriched with American Community Survey marital status estimates for people age 15 and over. It includes state, county, and tract layers for examining how marital status is distributed across the United States. Feature Layers State — State boundary polygons with geographic identifiers, land and water area, and marital status indicators for the total population age 15 and over. The layer supports statewide summaries of never married, married, widowed, and divorced populations, along with percentage fields and margins of error. County — County boundary polygons with the same marital status measures, organized for county-level analysis within each state. Tract — Census tract boundary polygons with county and state context, providing detailed local-scale marital status estimates and percentage calculations. Geographic Coverage The service covers the United States and uses standard Census geography at the state, county, and tract levels. It is suited for multiscale demographic mapping and comparison across administrative boundaries. Use Cases Mapping marital status patterns across states, counties, and census tracts Supporting demographic analysis and community profiling Comparing age 15 and over marital composition by geography Creating thematic maps that combine boundaries with American Community Survey estimates Data Notes The layers include estimate and margin of error values derived from American Community Survey style tabulation and several calculated percentage fields. Boundary geometry and area fields support cartographic display and spatial analysis.## 概述 本要素服务提供基于边界的普查地理要素，并附加了针对15岁及以上人群的美国社区调查（American Community Survey）婚姻状况估算数据。其包含州、县及普查区图层，用于分析美国境内婚姻状况的分布情况。 ### 要素图层 - 州图层：包含地理标识符、水陆面积，以及15岁及以上总人口的婚姻状况指标的州边界面要素图层。该图层支持对从未已婚、已婚、丧偶及离异人口进行全州汇总统计，同时附带百分比字段与误差边际值。 - 县图层：包含同类婚姻状况统计指标的县边界面要素图层，用于各州内的县级尺度分析。 - 普查区图层：附带县与州上下文信息的普查区边界面要素图层，可提供精细化的局域尺度婚姻状况估算值与百分比计算结果。 ### 地理覆盖范围 本服务覆盖美国全境，采用标准普查地理分区，涵盖州、县及普查区层级，适用于多尺度人口制图与跨行政边界的对比分析。 ### 应用场景 1. 绘制州、县及普查区范围内的婚姻状况分布模式 2. 支撑人口统计分析与社区画像构建 3. 按地理分区对比15岁及以上人群的婚姻构成 4. 创建结合边界要素与美国社区调查估算数据的专题地图 ### 数据说明 本图层包含源自美国社区调查式制表的估算值与误差边际值，以及若干计算得到的百分比字段。边界几何与面积字段可支撑制图展示与空间分析工作。