MS Mechanical Engg
For the people applying next year, here's some help:

SoP character/page/word limits:

Purdue
Sop 300-500 words
diversity statement 500 words

UIUC
Sop 3page

PennState
1-2page

VTech
1-2page double-spaced

CUBoulder
300-500words

Gatech
4000char - hard limit

UMCP
SOP+diversity 1000-2000words

TAMU
120lines, 80char per line
(but application portal recommends to keep the SOP within 500-650words)

OhioState
SoP 2page double-spaced
Diversity essay 500words -hard limit

PS. Times new roman, Arial or Calibri with font size 10 or 12 is recommended for all SoPs.

Posting this here as most of the content about SoP length on the web is confusing. I had significant delays in application as I did not have access to all this.
Would be great if others can add info for more univs. Happy writing!!