Walkability Index (v4.1.2)

Overview Multi-year Walkability Index derived from LODES employment entropy, GTFS transit proximity, and EPA SLD street connectivity, aggregated from block groups to tracts/counties/health districts. This dataset is produced by the Social Data Commons at the University of Virginia as part of the Walkability Index data pipeline. Coverage Temporal coverage: 2017–2023 (ACS 5-year estimates) Geographic levels: County, Health District, Tract Coverage areas: National Capital Region (DC metro), United States (national), Virginia (statewide) Census Variables Custom NatWalkInd = D2A_Ranked/6 + D2B_Ranked/6 + D3B_Ranked/3 + D4C_Ranked/3: Walkability Index File Format Data files are provided as xz-compressed CSV (.csv.xz) with the following columns: geoid, region_type, region_name, year, measure, value, moe (margin of error, where available). A measure_info.json file provides per-measure metadata.