The Indigenous-Tribal Population indicator measures the percent of Indigenous-Tribal Populations within each census tract based on all specified and non-specified tribes identified in the American Community Survey (ACS). The Total Indigenous-Tribal Population) was divided by the Census Tract Population. Data for this indicator were collected directly from the Census Bureau at the census tract level for the 2019 ACS 5-year estimate (5-year estimate, 2015-2019).

Rationale:

Many Indigenous and Tribal communities lack representation in similar indicators. Upon initial development of this EQI, Caltrans heard from tribal communities a need to represent Indigenous and Tribal Populations in relationship to transportation equity indices. Indigenous populations have been documented to have higher rates of pedestrian injury and fatality. Researchers at the Governors Highway Safety Association documented 2015 to 2019, per-capita traffic death rates for American Indian and Alaskan natives were more than two and a half times those of the population overall — and nearly three times those of White people across all modes.

Data Source(s)U.S. Census Bureau (Extracted, January 5, 2022). 2019 ACS 5-year estimates. American Indian And Alaska Native Alone for Selected Tribal Groupings (Table - B02014). CSV