Forrester expects steady expansion of US retail sales over the next five years. By 2030, we project that US total retail sales will reach $6.2 trillion, up from $5.2 trillion in 2025. US e-commerce sales will reach $1.8 trillion, and US e-commerce penetration will grow to 29% by 2030. This report provides a forecast for US total retail sales, e-commerce sales, and e-commerce penetration for 30 product categories, with historical data going back to 1998.