Social media use in the U.S. is becoming increasingly fragmented, limiting the ability of brands and public figures to reach broad audiences. Pew research shows YouTube, Facebook and Instagram remain the most widely used platforms, benefiting from their long presence in users’ routines. However, Reddit has grown, especially among 18–29-year-olds, while X has declined.
YouTube dominates across age groups, while TikTok and Snapchat attract most under-30s. Meanwhile, emerging platforms such as Bluesky, Threads and Truth Social remain niche.
WhatsApp is rising, particularly among Asian and Hispanic users. Content from platforms like YouTube and Reddit is increasingly used to train major AI models.