ACS Health Insurance Coverage by Geography

Overview This feature service provides American Community Survey health insurance coverage data for U.S. geographies at the state, county, and census tract levels. It includes population counts for civilian noninstitutionalized residents and summarizes how coverage is distributed across major age groups. Feature Layers State — State boundaries with summary estimates for total civilian noninstitutionalized population, age-group population totals, health insurance coverage categories, uninsured counts, and calculated uninsured percentages. County — County boundaries with the same health insurance coverage measures, supporting county-level comparison and regional health access analysis. Tract — Census tract boundaries with detailed local estimates for population totals, coverage types, uninsured counts, and uninsured rates for fine-scale neighborhood analysis. Coverage and Content The service focuses on health insurance status for three age groups: under 19 years, 19 to 34 years, 35 to 64 years, and 65 years and over. Coverage categories include employer-based insurance, direct-purchase coverage, Medicare, Medicaid or means-tested public coverage, TRICARE or military coverage, Veterans Affairs health care, multiple coverage, and no health insurance coverage. The layers also include calculated summary fields for total uninsured population and uninsured percentage. Geographic Coverage The layers cover the United States and its populated geographic boundaries at state, county, and tract scales. The service is suitable for national, regional, and neighborhood-level exploration of health coverage patterns. Use Cases Mapping uninsured populations and health coverage patterns across U.S. communities Comparing health insurance access by age group and geography Supporting public health, health equity, and policy planning workflows Creating thematic maps and dashboards for state, county, and tract-level analysis Source and Use The content is derived from American Community Survey estimates and is designed for use in GIS applications that support visualization, querying, and spatial analysis of demographic and health coverage conditions.### 概述 本要素服务（feature service）提供美国社区调查（American Community Survey）的健康保险覆盖数据，覆盖美国州、县及普查街区（census tract）三级地理区域。数据集包含非制度化平民居民的人口统计数据，并汇总了各主要年龄组的保险覆盖分布情况。 ### 要素图层 - **州级图层**：包含州界矢量数据，附带汇总估算字段，涵盖非制度化平民总人口、各年龄组人口总数、健康保险覆盖类别、未参保人数及计算得到的未参保百分比。 - **县级图层**：包含县界矢量数据，涵盖与州级图层一致的健康保险覆盖指标，支持县级层面的对比分析与区域医疗可及性研究。 - **普查街区级图层**：包含普查街区（census tract）界矢量数据，提供精细化的本地估算数据，涵盖人口总数、覆盖类型、未参保人数与未参保率，适用于精细化的社区邻里分析。 ### 覆盖范围与数据内容 本服务聚焦四类年龄组的健康保险参保状态：19岁以下、19至34岁、35至64岁，以及65岁及以上人群。保险覆盖类别包括雇主赞助保险、直接购买保险、联邦医疗保险（Medicare）、医疗补助计划（Medicaid）或收入审查类公共保险、TRICARE军人医疗计划、退伍军人事务部医疗保健、多重参保，以及无健康保险。各图层还包含总未参保人口与未参保百分比的计算汇总字段。 ### 地理覆盖范围 本图层覆盖美国全境及其有人居住的州、县、普查街区（census tract）各级地理边界。本服务适用于全国、区域及邻里层面的健康保险覆盖模式探索。 ### 应用场景 1. 绘制美国各社区的未参保人口与健康保险覆盖模式专题地图 2. 按年龄组与地理区域对比健康保险可及性差异 3. 支撑公共卫生、健康公平与政策规划相关工作流程 4. 创建面向州、县及普查街区层级的专题地图与可视化仪表板 ### 数据来源与适用场景 本数据集内容源自美国社区调查的估算值，专为支持人口统计与健康覆盖状况的可视化、查询及空间分析的地理信息系统（Geographic Information System, GIS）应用而设计。