How long should my Personal Essay be?

As long as it needs to be and no longer.

There is no determined maximum length or word count, but 1 to 2 pages single spaced, or 2 to 3 pages double spaced seems about the typical length. This is probably about 500 to 750 words, but again, it should be as long as it needs to be and no longer.

As for a minimum, the Common Application suggests 250 words.