As you may have read, the London Games Opening Ceremony was the most-watched opening to an Olympics ever in the U.S. with 40.7 million viewers tuning in Friday night. That’s a million more than watched the 1996 Atlanta games (39.8 million viewers) and almost 6 million more than watched the Beijing opening ceremony four years ago (34.9 million viewers).

Here are the top 20 metered markets in rating and share (8 p.m. – 12:02 a.m. ET/PT on Friday, July 27, 2012):

1. San Diego (KNSD) 27.8/49
T2. Washington D.C. (WRC) 26.8/48
T2. West Palm Beach (WPTV) 26.8/48
4. Salt Lake City (KSL) 26.6/50
5. Denver (KUSA) 26.4/51
6. Norfolk (WAVY) 26.3/42
7. Sacramento (KCRA) 25.4/47
T8. Kansas City 25.0/44 (KSHB)
T8. Richmond (WWBT) 25.0/41
10. Columbus (WCMH) 24.9/43
T11. Boston (WHDH) 24.8/45
T11. Indianapolis (WTHR) 24.8/45
13. Seattle (KING) 24.4/48
14. Los Angeles (KNBC) 24.2/44
15. Atlanta (WXIA) 24.1/39
T16. Philadelphia (WCAU) 24.0/40
T16. Jacksonville (WTLV) 24.0/39
T18. Austin (KXAN) 23.9/44
T18. Ft. Myers (WBBH) 23.9/43
20. Portland (KGW) 23.8/48

After the jump, the Top 20 markets for Saturday, the first night of competition (8:30-11:28 p.m. ET/PT on July 28, 2012):

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