The 2017-18 version of the has an essay length limit of 650 words. Even though the change regularly, this length limit has now been in place for four years. In 2011 and 2012, the Common Application had a 500-word limit, but many colleges that use the application thought that constraint was a little too short. Prior to 2011, the length of the essay was set by the judgment of the applicant (and some applicants who wrote 1,200-word essays showed bad judgment).
While this advice may be true for some colleges, for many others it will not be. If a college requires an essay, it is because it has holistic admissions and wants to get to know its applicants as more than a list of grades and standardized test scores. The essay is typically the most powerful tool you have for conveying who you are and what you care about. If you've chosen the right focus for your essay—one that reveals something meaningful about you—you're going to need far more than 250 words to provide the type of detail and self-reflection that makes an essay effective.
10 big words to use in an essay - Brand Solutions
While the maximum length for the Common Application essay is 650 words, the minimum length is 250 words. I've heard counselors advise students to keep their essays on the shorter end of the spectrum because college admissions offices are so busy they will appreciate short essays.