On Thu, 19 Dec 2013 21:51:46 -0500, Ed Pawlowski wrote:

The number of U.S. households heating with wood rose 34% nationwide from
1.8 million in 2000 to 2.4 million in 2010 — faster than any other
heating fuel, according to Census data.
http://usatoday30.usatoday.com/money...ion/51160192/1

Curious, how is this "Census data" collected?

I can't recall a Census asking how I heat my house