Just how dominant is Google on the Internet? Think of it this way: 8 out of 10 U.S. Internet users visited a Google website at least once in May 2010, according to data from comScore.

comScore’s ranking of the most popular U.S. web properties in May 2010 shows Google at top spot with an estimated 179 million unique visitors. Based on comScore’s total U.S. Internet traffic estimate of 215 million users during the month, Google got some 83 percent of that Internet traffic. In other words, 8 out of 10 Internet users visited a Google website at least once in May 2010.

Based on unique visitors, Google was followed by Yahoo with 167 million unique visitors in May 2010 and Microsoft with 160 million. Rounding out the top five were Facebook with 130 million and AOL with 112 million.

We can therefore say that 7 out of 10 U.S. Internet users visited Yahoo and Microsoft, while 6 out of 10 visited Facebook and 5 out of 10 visited AOL in May 2010.

So, while Google clearly sits atop the heap when it comes to the most visited web properties among U.S. Internet users, the other big online brands also get a huge proportion of web traffic.

Here’s the full list of the top 50 websites visited by U.S. Internet users in May 2010, along with their estimated traffic.

Total unique visitors: 215,691,000

1. Google Sites: 179,188,000
2. Yahoo! Sites: 167,220,000
3. Microsoft Sites: 160,061,000
4. Facebook.com: 130,308,000
5. AOL LLC: 112,364,000
6. Ask Network: 91,939,000
7. Fox Interactive Media (MySpace): 88,072,000
8. Turner Network: 86,086,000
9. Glam Media: 80,748,000
10. CBS Interactive: 78,432,000
11. Wikimedia Foundation Sites: 78,275,000
12. Amazon Sites: 77,973,000
13. New York Times Digital: 72,378,000
14. eBay: 71,509,000
15. Apple Inc.: 67,898,000
16. Viacom Digital: 62,252,000
17. Demand Media: 56,261,000
18. Comcast Corporation: 52,110,000
19. craigslist, inc.: 50,830,000
20. VEVO: 48,961,000
21. Answers.com Sites: 45,390,000
22. The Weather Channel, 43,498,000
23. NetShelter Technology Media: 38,280,000
24. Technorati Media: 38,250,000
25. Gannett Sites: 37,522,000
26. Federated Media Publishing: 35,957,000
27. WordPress: 35,770,000
28. Wal-Mart: 35,530,000
29. iVillage.com: 34,531,000
30. Break Media: 33,798,000
31. Superpages.com Network: 33,687,000
32. YellowBook Network: 33,070,000
33. Adobe Sites: 32,733,000
34. Verizon Communications Corp: 31,302,000
35. AT&T InteractiveSites: 30,515,000
36. Time Warner Excluding AOL: 29,461,000
37. Tribune Interactive: 29,415,000
38. NBC Universal: 29,318,000
39. Lycos Global Search And Media: 29,035,000
40. Expedia Inc.: 28,504,000
41. Weatherbug Property: 27,565,000
42. Gorilla Nation: 27,509,000
43. Disney Online: 26,857,000
44. Target Corporation: 26,639,000
45. Photobucket.com LLC: 26,492,000
46. Everyday Health: 26,484,000
47. Warner Music: 26,263,000
48. WorldNow Sites: 25,428,000
49. ESPN: 25,359,000
50. The Washington Post Company: 24,495,000

Related Articles:

• Top 50 U.S. Web Properties for August 2010
• Top 50 U.S. Web Properties for July 2010
• comScore Lists Top 50 U.S. Web Properties for June 2010
• Top U.S. Web Properties – October 2009
• Google Leads Top 50 U.S. Websites, Facebook Exceeds 150 Million Visitors

This entry was posted on Monday, June 21st, 2010 at 2:55 pm and is filed under Feature, Search Marketing. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.