Some agents/publishers explicitly state a word count range in their submission guidelines, so follow that if available. If not, 80-100k is a
good standard to aim for, though YA novels tend to be on the shorter side (less than 80k).
Resource: Word count for Publishing?: Creative Writing Forums: Apr 12, 2012
www.writingforums.org › Forums › Creative Writing › Publishing
Rejection is the one thing you can count on in this business, which is why …. The average adult novel is 90,000 words, while the average teen novel is 55,000 …
Alyson Noel, Young Adult Author
More thoughts on the subject: Young Adult: Young adult fiction allows for a lot of flexibility in word count. Middle Grade, Young Adult Fiction Length:
The average middle grade is 30k-40k. Upper middle grade can hit in the 50k word count range (possibly longer, if it’s something really special).
Resource: Ask The Agent: Your Novel Word Count Guide and More: Feb 18, 2013
In the continuing search for answers about YA word counts, here is another idea:
“It costs a great deal of money to actually bind books. … Young Adult Fiction (YA): 50,000 to 80,000”
Word Count: Literary Rejections
Another answer to the question about YA novel length was as follows:
MG (middle grade) novels run 20,000-40,000 words, while YA (young adult) is 40,000-65,000
Is It Young Adult or Middle Grade?: WritersDigest.com: Apr 22, 2009