Tribal Census Tracts

This measure was created by intersecting 2020 census tracts with Tribal lands boundaries maintained by the Washington Department of Ecology. Only reservation, disputed lands, and off-reservation Tribal lands were included. Citation Washington Tracking Network, Washington State Department of Health. Web. "Tribal Census Tracts". Data obtained from the Department of Ecology, 2025 Tribal Land Boundary Data. Published September 2025.本数据集通过将2020年人口普查区（census tract）与华盛顿州生态部（Washington Department of Ecology）维护的部落土地边界开展空间相交分析生成。仅纳入保留地、争议土地及保留地外部落土地范围。引用来源：华盛顿追踪网络、华盛顿州卫生部，《部落人口普查区》，网页资源。本数据集数据取自生态部2025年部落土地边界数据集，于2025年9月发布。