ACS Children in Immigrant Families Boundaries

Overview This feature service provides polygon boundary layers for U.S. states, counties, and census tracts enriched with American Community Survey estimates about children living in immigrant families. The attributes summarize children under 18 living with parents, including detailed breakdowns for children living with one or two parents and for native-born and foreign-born children and parents. The service also includes Esri-calculated fields that identify the total number and percentage of children in immigrant families. Feature Layers State: State-level boundaries with survey estimates that support statewide demographic analysis of children in immigrant families. County: County boundaries with the same family and nativity measures, enabling county-scale comparison and regional planning. Tract: Census tract boundaries with detailed household and nativity estimates for neighborhood-level demographic analysis. Geographic Coverage The service covers the United States at multiple administrative scales, including states, counties, and census tracts. Use Cases Demographic and social analysis of children living in immigrant families Comparing nativity patterns across states, counties, and neighborhoods Supporting community planning, education research, and family-focused policy studies Mapping American Community Survey estimates alongside administrative boundaries数据集概述：本要素服务提供美国各州、各县及普查区（census tracts）的多边形边界图层，图层内嵌美国社区调查（American Community Survey）关于移民家庭中儿童的统计估算数据。属性字段汇总了与父母同住的18岁以下儿童的相关信息，涵盖与双亲或单亲同住儿童的细分数据，以及本土出生、外籍出生的儿童与父母的出生地细分统计。此外，该服务还包含Esri计算生成的字段，用于标识移民家庭中儿童的总数量及占比。 要素图层： 州级图层：搭载统计估算数据的州级行政边界图层，可支撑移民家庭中儿童的全州人口统计分析。 县级图层：包含同类家庭与出生地统计指标的县级行政边界图层，可实现县级尺度的对比分析与区域规划。 普查区图层：包含详细家庭与出生地估算数据的普查区边界图层，支持社区级人口统计分析。 地理覆盖范围：本服务覆盖美国多尺度行政区域，涵盖州、县及普查区层级。 应用场景： 1. 针对移民家庭中儿童开展人口与社会分析； 2. 对比各州、各县及社区间的出生地分布模式； 3. 支撑社区规划、教育研究及以家庭为核心的政策研究； 4. 将美国社区调查统计估算数据与行政边界图层叠加制图。