The survey by the CDC’s National Center for Health Statistics (NCHS) found that during the second half of 2008, 20.2% of US homes had only wireless telephones.
That was an increase of 2.7 percentage points over the first half of 2008, the NCHS said, and the largest six-month increase since it began asking about wireless-only households in 2003.
The survey also found that 1.9% of US households had no telephone service at all, neither wireless nor landline, accounting for nearly four million adults and two million children.
It said 33.1% of adults aged 18-24 lived in households with only wireless telephones with the figure rising to 41.5% among adults aged 25-29.
The number decreased for those over the age of 30 with 21.6% of adults aged 30-44 living in households with only wireless telephones, 11.6% of adults aged 45-64 and 3.3% of adults aged 65 and older.
The NCHS collects the data on wireless and landline telephone service in a bid to ensure that the results of its health surveys are not skewed by ignoring wireless-only households.
Landlines replaced by wireless phones – discussion and comments