The top 10 U.S. retail e-commerce companies are…

Amazon continues to dominate U.S. e-commerce sales, far outdistancing its closest competitor, Walmart.

Amazon’s U.S. e-commerce sales will increase by 15.3% this year to $367.19 billion, after surging 44.1% during 2020, according to a report by eMarketer. The online giant has a hard hold on two categories where it receives the majority of U.S. e-commerce sales: books/music/video (83.2% of all sales in 2021) and computer/consumer electronics (50.2%).

In addition, Amazon will receive more than 45% of U.S. e-commerce sales dollars this year in three additional categories: “other” (48.2%), toys/hobby (46.0%) and office equipment/supplies (45.6%).

“Another way of looking at it: Amazon will receive more than one-quarter of U.S. e-commerce sales dollars for every category other than auto/parts,” stated eMarketer.

E-commerce sales at many of Amazon’s competitors — including Walmart and Target—are growing faster, but Amazon’s sales are still growing faster than the overall market. Amazon’s share of U.S. e-commerce sales will increase from 39.8% in 2020 to 40.4% in 2021 — at a gain of 0.6 percentage points, this growth will be larger than that of any other company this year, according to eMarketer.

Walmart’s U.S. e-commerce sales will grow 21.2% this year, to $64.62 billion. The discounter will account for 7.1% of all U.S. e-commerce sales.

Here is eMarketer’s list of the top 10 U.S. retail e-commerce companies for 2021: