Social Connectedness Index

The Social Connectedness Index (SCI) measures the relative probability that Facebook users in two locations are friends. Choose a tool below to explore or map the data.

Interactive Explorer

Click any country, state/province, or district on a live, zoomable globe and watch it light up with where it's most connected. The fastest way to explore the data and discover surprising links.

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Map Generator

Build polished, publication-quality SCI maps with full control over geography, colors, breaks, and titles — then download as PNG, SVG, PDF, or video, or export the R code to reproduce them.

Make a map →