County Buddy: A Companion Dataset for Socioeconomic Data Analysis and Exploration of U.S. Datasets

County Buddy is a dataset detailing the presence, count, and institutions of special populations (incarcerated individuals, college students, military personnel, and Native Americans) at the U.S. county and census tract levels. It offers geographic and demographic context to help explain variation in socio-economic indicators like life expectancy, income, and education.County Buddy 是一款数据集，用于详细梳理美国县级及普查街区（census tract）层级下，被监禁人员、大学生、军事人员与美洲原住民等特定人群的存在状况、数量规模及相关机构的分布情况。该数据集提供了地理与人口统计学背景信息，可助力阐释预期寿命、收入与教育等社会经济指标的区域差异。