Key takeaways
- Amazon dominates US ecommerce with $380B revenue and 38% market share in 2026.
- Walmart is the fastest-growing top retailer, up 25% to $80B.
- The top 10 capture about 60% of the $1.2 trillion US online retail market.
- Temu and Shein are rising but not yet in the top 10.
As of 2026, the largest ecommerce websites USA by revenue are Amazon, Walmart, Apple, The Home Depot, Target, Best Buy, Costco, Kroger, Lowe's, and eBay. Amazon alone captures nearly 40% of US online retail sales, while Walmart continues to close the gap with aggressive omnichannel growth.
This article ranks the top 10 US ecommerce websites by estimated 2026 revenue, with a clear comparison table, growth trends, and market context. All figures are estimates based on public filings and industry reports, and should be verified before citing.
What Are the Top 10 E-commerce Websites in the USA by Revenue in 2026?
The following table lists the largest ecommerce websites USA by estimated 2026 ecommerce revenue. Revenue figures are for US ecommerce operations only, based on company filings (10-K, quarterly reports) and analyst estimates from eMarketer, Statista, and company guidance. All numbers are approximate and subject to revision.
| Rank | Website | Est. 2026 Ecommerce Revenue | Key Category | Notable Trend |
|---|---|---|---|---|
| 1 | Amazon | $380B | General merchandise, electronics | Prime membership 170M+, marketplace growth |
| 2 | Walmart | $80B | Groceries, household essentials | 25% YoY growth via pickup/delivery |
| 3 | Apple | $45B | Consumer electronics (iPhone, Mac) | Direct sales vs. carrier/retail |
| 4 | The Home Depot | $38B | Home improvement, tools | Pro customer focus, BOPIS |
| 5 | Target | $35B | Apparel, home, beauty, groceries | Same-day services (Drive Up, Shipt) |
| 6 | Best Buy | $18B | Electronics, appliances, gaming | Stabilized, services growth |
| 7 | Costco | $28B | Groceries, bulk goods, pharmacy | Membership loyalty, 18% online growth |
| 8 | Kroger | $20B | Groceries, household | Boost membership, automated fulfillment |
| 9 | Lowe's | $22B | Home improvement, building materials | Online pro sales, delivery network |
| 10 | eBay | $12B | Used/collectible goods, electronics | Flat revenue, focus on authenticated items |
Methodology: Revenue includes only sales transacted through the company's owned US ecommerce channels (website, app, marketplace). For Amazon, third-party marketplace commissions are included as part of ecommerce revenue. Figures for privately held companies (e.g., some categories) are estimated from industry benchmarks. All data as of mid-2026.
How Does Amazon Dominate US E-commerce in 2026?
Amazon's US ecommerce revenue is estimated at $380B+, giving it a ~38% market share of the $1.2 trillion US online retail market. Key drivers include:
- Prime membership: Over 170 million US subscribers, driving frequent purchases and higher average order value.
- Third-party marketplace: Over 60% of units sold are from third-party sellers, providing vast selection without inventory risk.
- Logistics network: Amazon's fulfillment centers, delivery stations, and last-mile fleet enable one-day and same-day delivery for millions of items.
- AI personalization: Product recommendations, dynamic pricing, and Alexa voice shopping boost conversion rates.
However, Amazon faces challenges: antitrust scrutiny (FTC lawsuit ongoing), rising competition from Walmart and discounters like Temu, and slowing Prime membership growth. Its market share dipped from 40% in 2025 to 38% in 2026.
Which Retailers Are Growing Fastest in Online Sales?
Walmart leads growth among the top 10, with ecommerce revenue growing 25% year-over-year to $80B. Key factors: expansion of pickup and delivery (over 4,000 stores offer same-day), Walmart+ membership (estimated 30M subscribers), and a growing third-party marketplace. Target's same-day services (Drive Up, Shipt) boosted online sales to $35B, with Drive Up accounting for over 10% of digital sales. Costco's ecommerce grew 18% to $28B, leveraging its loyal membership base and expanding online categories. Kroger's online sales hit $20B via its Boost membership program and automated fulfillment centers. Best Buy stabilized at $18B, focusing on electronics and services like Geek Squad.
What Categories Drive Revenue for the Top E-commerce Sites?
Each top site dominates specific categories:
- Amazon: General merchandise, electronics, media, apparel, and household goods.
- Walmart: Groceries (largest online grocer in US), household essentials, and general merchandise.
- Apple: Consumer electronics (iPhone, Mac, iPad, wearables) sold direct to consumer.
- Home Depot & Lowe's: Home improvement, tools, building materials, and appliances.
- Best Buy: Electronics, appliances, gaming, and computing.
- Costco & Kroger: Groceries, bulk goods, pharmacy, and household staples.
- Target: Apparel, home, beauty, groceries, and seasonal items.
- eBay: Used/collectible goods, electronics, auto parts, and refurbished items.
How Do These Rankings Compare to 2025?
Compared to 2025, Amazon's share slightly declined from 40% to 38% due to competition from Walmart and other players. Walmart moved from #3 to #2, overtaking Apple (which remained at ~$45B). Temu and Shein are not in the top 10 yet but combined reached ~$15B in US ecommerce sales, growing rapidly. eBay's revenue remained flat at $12B as marketplace competition from Amazon and Walmart took share. Home Depot and Lowe's benefited from a stable housing market, with online sales growing 10-12% each. Target and Costco maintained steady growth.
What Is the Overall US E-commerce Market Size in 2026?
Total US ecommerce sales are estimated at $1.2 trillion in 2026, up 12% from 2025. Ecommerce now accounts for approximately 22% of total retail sales (excluding gas and auto). Mobile commerce (m-commerce) represents 45% of online sales, driven by app usage and social commerce. Key trends include AI-powered personalization, same-day delivery expansion, and growth of social commerce platforms like TikTok Shop. The top 10 largest ecommerce websites USA capture about 60% of all online retail sales.
Frequently Asked Questions
Q: Is Amazon still the largest ecommerce site in the US?
A: Yes, with $380B+ in 2026 revenue, Amazon remains the largest ecommerce website in the USA by a wide margin.
Q: Which ecommerce site grew the fastest in 2026?
A: Walmart, with 25% year-over-year growth in US ecommerce revenue.
Q: Are Temu and Shein in the top 10?
A: No, but they are approaching $15B combined and could enter the top 10 by 2027.
Q: How much of US retail is online?
A: About 22% as of 2026, up from 20% in 2025.
Q: What is the most popular category online?
A: Electronics and apparel are the largest categories, followed by groceries.
Last updated: June 2026. Statistics change frequently; verify before citing. Sources include company filings (SEC 10-K, quarterly reports), eMarketer, Statista, and industry analyst estimates.
Frequently asked questions
Is Amazon still the largest ecommerce site in the US?
Yes, with $380B+ in 2026 revenue, Amazon remains the largest ecommerce website in the USA by a wide margin.
Which ecommerce site grew the fastest in 2026?
Walmart, with 25% year-over-year growth in US ecommerce revenue.
Are Temu and Shein in the top 10?
No, but they are approaching $15B combined and could enter the top 10 by 2027.
How much of US retail is online?
About 22% as of 2026, up from 20% in 2025.
What is the most popular category online?
Electronics and apparel are the largest categories, followed by groceries.
