Mine varied between 1 1/2 - 2 pages depending on how much I wrote for my last paragraph (the why I want to attend your university paragraph).
I wish I had an opportunity to go back and re-do some of my statements and write about 2 or 3 different professors for each. I mainly, for most programs, just listed one specific person and then mentioned how my interests were well represented in the program blabalbla. I didn't expect adcomm's to only associate you with you who mentioned and if that person was full be like "nope sorry".