There are around 3.8 million e-commerce sites in the USA

According to US e-commerce statistics from Built With, there are more than 3.8 million such sites in the US, while the country’s top three e-commerce technologies are Shopify, Squarespace Commerce, and WooCommerce Checkout. The United Kingdom ranks second with 309,174 such sites, but countries like France (147,595 sites), Germany (184,785 sites), and Russia (164,892 sites) don’t fall behind either.