A civic data commons for Dane County

Public data about who Madison works for.

Every map cites its sources. Every estimate says how certain it is. Everything reads in English and Spanish — and everything is free to download, not just to look at.

What's here

The Equity Atlas

See opportunity, tract by tract

Where families own their homes, where rent takes more than a third of a paycheck, where the gaps are narrowing. Pick a place, an outcome, and a community — all three stay in view while you explore.

Open the Atlas

Policy Maps

See who a policy would touch first

When a rule changes — an income threshold, a zoning line, a program cutoff — these maps show which neighborhoods sit closest to that line. Every assumption is labeled, and maps built from different-confidence data say so.

Explore Policy Maps

Our provenance promise

Every layer on every map names its source and carries a confidence rating, from T1 (directly measured here) to T5 (an indirect proxy). Where we only have county-level data for a neighborhood, the map shows it — hatched and faded, not dressed up as certainty.

How the T1–T5 ratings work