Household income by ZIP. Every ZIP is colored by its own real median income on a 16-step spectrum, low (violet/blue) to high (orange/red). Drag the range slider below to select an income band (left = bottom, right = top): ZIPs inside the band stay fully bright, everything outside is merely darkened for context. Push the sliders to the far ends ($0 → $200k+) and no ZIP is darkened — you see the whole map.