Blind Screen - Voronoi Territories with Population

Blind Screen - Voronoi Territories + Population

Each pin counts only people who are nearest to it AND within the radius. Overlaps are split down the middle - nobody is counted twice. Drag pins to update live.

total unique residents across all territories

Radius 20 mi

Each coloured region = that pin's territory (nearest pin, capped at the radius). Drag a pin to redraw and recount. Double-click empty map to add a pin. An overlapping circle turns red and cannot be placed if its territory drops below 100,000 people.

Pins, postcode & territory population

Population = ONS Census 2021 residents whose neighbourhood centre is closer to this pin than any other AND within the radius. Because each neighbourhood is assigned to exactly one pin, the per-pin figures already exclude overlaps - they sum exactly to the total above. Use the postcode for the Meta pin; remember Meta targets a plain circle, so keep Advantage+ OFF.