6.04 billion people are online in 2025. China leads with 1.39B internet users and India 1.08B, with the United States third at 324M, followed by Indonesia, Brazil, Russia, Pakistan and Mexico. The ranking tracks total population almost exactly — a sign that, rich or poor, nearly everyone now carries a phone.
Internet users are the addressable ceiling for e-commerce and digital B2B. The U.S. (324M) is Cube-Age's core selling market — near-total connectivity means marketplace, RFQ and social channels reach virtually every buyer — while China (1.39B) is the supply side, the world's deepest digital manufacturing base. Fast-growing, phone-first markets like Brazil and Mexico are the Latin American opportunity. See e-commerce & retail.
Source: DataReportal, 2025. Visualization: Visual Capitalist / Voronoi ("Top 20 Countries with the Most Internet Users"). Original image reproduced above with source attribution intact.