Social Connectedness Index

The Social Connectedness Index (SCI) measures the relative probability of friendship between people in different locations. The dataset has been used by researchers across economics, political science, public health, and sociology to study migration, trade, the spread of COVID-19, knowledge diffusion, and inequality.

Data: Social Connectedness Index data
Map: Interactive explorer — countries, EU regions (NUTS-2), US states
Research: JPE 2018 · RES 2019 · JEP 2018
Media Coverage: New York Times · The Economist · Bloomberg