Where California
runs short of care

A composite index across 1,389 ZIP code areas, combining healthcare supply, health burden and access barriers. Shown with its uncertainty, not without it.

How to read this map

Each area is shaded by the chance it belongs to the worst-served 10% of California, estimated by rebuilding the index many times from resampled data. Hatching marks areas with too few residents or recorded deaths for a score that would mean anything. When an area is selected, the bar under its name is the span its rank could plausibly take, not just where it lands on average.

Areas scored

1,387

of 1,389 ZIP code areas

Residents covered

39.3M

Nearly all of California

Reliably worst decile

In the bottom 10% in ≥80% of simulations

Median rank span

302places

How wide a typical area's interval is

Showing

Uncertainty

Indicators

Spatial test

Chance of being among the worst 10%

neverevery time

Hatched: rank interval too wide to place this area confidently

No data: too few residents or deaths to estimate

Selected area

Click any area on the map — or any row in the shortlist below — to see its rank, the range that rank could plausibly take, and the measurements behind it.

Worst served

Ranked by the median across simulations. The bar behind each is the span that rank could plausibly take.