Forensic DNA databases in the United States have expanded substantially over the past two decades. However, comprehensive, harmonized data describing database structure and composition remain limited. This dataset series documents forensic DNA infrastructure across national and state levels from 2001 to 2025. It includes a reconstructed time series of monthly National DNA Index System (NDIS) statistics from FBI archives, capturing counts of offender, arrestee, and forensic profiles, participating laboratory totals, and investigations aided. A complementary dataset compiles publicly available state-level statistics and policy metadata on arrestee collection laws, familial search practices, and DNA collection statutes across all 50 states. A third dataset provides standardized demographic and annual collection data obtained through previously published public records requests, including sex and racial composition where reported. Together, these resources provide a foundation for studying the historical development of forensic DNA systems in the U.S., enabling longitudinal and cross-sectional analyses of database growth, policy variation, and reporting practices across jurisdictions.

翻译：过去二十年间，美国法医DNA数据库规模显著扩大。然而，描述数据库结构与组成的综合性标准化数据仍十分有限。本数据集系列记录了2001年至2025年间美国国家与州级法医DNA基础设施。其中包含根据联邦调查局档案重建的国家DNA索引系统月度统计数据时间序列，涵盖违法者、被捕者及法医图谱数量、参与实验室总数以及案件调查协助次数。配套数据集汇编了全美50个州公开可用的州级统计数据和政策元数据，涉及被捕者样本采集法规、家族性搜索实践及DNA采集法规。第三个数据集通过此前已公布的公共档案请求获取标准化人口统计与年度采集数据，包含所报告性别与种族构成信息。这些资源共同为研究美国法医DNA系统历史演变奠定基础，支持对跨辖区数据库增长、政策差异及报告实践进行纵向与横向分析。