The number of U.S. taxpayers claiming health savings account deductions increased 66% in 2007, to 581,438, from 351,170 in 2006.

The Internal Revenue Service has published that data in a collection of preliminary tax return data from 2007.

The total number of returns increased 3.3%, to 143 million, and total adjusted gross income increased 6.9%, to $8.5 trillion.

Over that same period, the value of HSA contribution deductions increased 71%, to $1.4 billion. The average HSA deduction per HSA deduction filer increased to $2,490, from $2,407 in 2006.

The number returns that included estate and trust income fell 1%, to 498,106.

The number of returns that included taxable individual retirement account distributions increased 11%, to 11 million, and the total value of those IRA distributions climbed 19%, to $149 billion.

A copy of the IRS 2007 preliminary data report is available here