15 minutes driving from 15-min driving from 40.4406, -79.9959, traced against Pennsylvania.

Fifteen minutes driving from downtown Pittsburgh covers 569,000 people at 2,243 per square mile across 253.9 square miles. The ring sits entirely within Pennsylvania, reaching from the Golden Triangle into the inner-ring boroughs on every side.

The commute-shed around the Golden Triangle holds 569K people with a voting-age population of 478K, plurality non-Hispanic white at roughly 68.4%. Black residents make up 15.9% of the ring, nearly five times the 3.2% Hispanic share. Asian residents come in at 5.4%, giving the ring a racial composition distinct from a typical Pennsylvania county profile.