Survey: U.S. Smartphone Growth by Age and Income

Changing Demographics of Tablet and eReader Owners in the US

Hispanics send and receive around 767 messages a month while African-Americans send and receive around 780. But teens take the cake when it comes to sending texts. On average, teens 18 and under send 2,779 SMS messages a month.

Those demographic groups are the ones with the most interest in buying an iPad. Only 18 percent of all consumers surveyed expressed a real interest in owning an iPad while 27 percent of 18-34 year olds and 24 percent of Apple owners said they were extremely or very interested.

the usage patterns of iPhone vs. iPod Touch are distinct. The iPhone user tends to hit the mobile Web more frequently during the work week. On the other hand, iPhone Touch use accelerates toward the end of the week and peaks on the weekend.

85% of baby boomers own a mobile phone, but the majority own feature phones (non-smartphones)
55% consider their mobile phone a necessity

Since that time, mobile phone use has climbed steadily among teens ages 12 to 17 – to 63% in fall of 2006 to 71% in early 2008.

Close to 33,000 web professionals answered the survey’s 37 questions, providing the first data ever collected on the business of web design and development as practiced in the U.S. and worldwide.

More than two-thirds of US adult mobile users can send and receive text messages, according to InsightExpress.

The company found that while Gen Y texts the most, three-quarters of 45-to-54-year-olds can also text.

Interesting service that claims to be able to provide demographic data on a website. I'm not sure where it gets the data or how reliable it is.

Demographics and statistics on RSS usage