Survey: 8.5 Million US Teens Have iPhones

Fortune's Philip Elmer-DeWitt reports on the results of the latest teen survey by investment firm Piper Jaffray. The survey polled 5,600 American teens, evenly divided between genders. The average age was 16. 

The following are a couple of the questions and answers from the survey:

  • Do you own an iPhone: 34% yes (vs. 17% a year ago)
  • Do you own a "tablet computer": 34% yes (vs. 22% a year ago)  

While the sample is very large, the question is: how representative of all US teens is this survey?

There are somewhere between 25 and 30 million teenagers in the US, depending on how "teen" is defined, according to the US Census Bureau. Thirty four percent of 25 million would be 8.5 million teens with iPhones. That seems plausible. Another 8.5 million teens have tablets/iPads by the same extrapolation. 

According to comScore's most recent figures 13.5% of US mobile subscribers own iPhones (or roughly 14.04 million people out of a total smartphone population of 104 million). These data points are from different sources but the numbers suggest that more US teens than adults own iPhones. That doesn't seem correct.

What's not exposed is the degree to which teens aspire to ownership of any other type of smartphone. Also not discussed is whether the tablet 34% of teens claim to "own" is actually theirs or owned by a parent. It would be interesting to know whether there are multiple iPads/tablets in the house.