September 3, 2026
Compare any of 9,200+ public library systems to the median system in its state and nationally — spending, visits, computers, floor space and staff, all per person in the library’s own service area — alongside the demographics of the community it serves. Source: IMLS Public Libraries Survey.
September 1, 2026
Libraries and air quality added to the county map Data
Six new county measures in a new Community & Environment group: library buildings, floor space, spending and internet computers (IMLS PLS), plus good and unhealthy air days (EPA AQS).
August 3, 2026
Sources and data for the 2027 nomination round — eligible tracts, 2018 carryover flags, and the measures for state, county, and city analysis. Roster in progress.
July 8, 2026
Source links added to every measure Site
Each measure's tooltip now links to its data source (CDC, HUD, CMS, Census SAIPE…) for full transparency.
July 8, 2026
Life Expectancy refreshed to 2020–2024 Data
County life expectancy and premature-death measures updated to the latest 5-year pooled window.
