The most important thing here is to realize that there are always exceptions to these rules. And man, people love to point out exceptions—and they always will. However, if there is one thing I remember from when my wife dragged me kicking and screaming to He’s Just Not That Into You, it’s that you cannot count on being the exception; you must count on being the rule. Aiming to be the exception is setting yourself up for disappointment. What writers fail to see is that for every successful exception to the rule (e.g., a first-time 150,000-word novel), there are at least 100 failures if not 300.
Almost always, high word count means that the writer simply did not edit their work down enough. Or—it means they have two or more books combined into one.
“But what about J.K. Rowling???” asks that man in the back of the room, putting his palms up the air. Well—remember the first Harry Potter book? It wasn’t that long. After JK made the publishing house oodles and oodles of money, she could do whatever she wanted. And since most writers haven’t earned oodles, they need to stick to the rules and make sure they work gets read. The other thing that will make you an exception is if your writing is absolutely brilliant. But let’s face it. Most of our work does not classify as “absolutely brilliant” or we’d all have 16 novels at this point.
ADULT NOVELS: COMMERCIAL & LITERARY
Between 80,000 and 89,999 words is a good range you should be aiming for. This is a 100% safe range for literary, romance, mystery, suspense, thriller and horror. Anything in this word count won’t scare off any agent anywhere.
Now, speaking broadly, you can have as few as 71,000 words and as many as 109,000 words. That is the total range. When it dips below 80K, it might be perceived as too short—not giving the reader enough. It seems as though going over 100K is all right, but not by much. I suggest stopping at 109K because just the mental hurdle to jump concerning 110K is just another thing you don’t want going against you. And, as agent Rachelle Gardner pointed out when discussing word count, over 110K is defined as “epic or saga.” Chances are your cozy mystery or literary novel is not an epic. Rachelle also mentions that passing 100K in word count means it’s a more expensive book to produce—hence agents’ and editors’ aversion to such lengths.
In short:
80,000 – 89,999: Totally cool
90,000 – 99,999: Generally safe
70,000 – 79,999: Might be too short; probably all right
100,000 – 109,999: Might be too long; probably all right
Below 70,000: Too short
110,000 or above Too long
Chick lit falls into this realm, but chick lit books tend to be a bit shorter and faster. 70-75K is not bad at all.
SCI-FI AND FANTASY
Science fiction and fantasy are the big exceptions because these categories tend to run long. It has to do with all the descriptions and world-building in the writing.
With these genres, I would say 100,000 – 115,000 is an excellent range. It’s six-figures long, but not real long. The thing is: Writers tend to know that these categories run long so they make them run really long and hurt their chances. There’s nothing wrong with keeping it short (say, 105K) in these areas. It shows that you can whittle your work down.
Outside of that, I would say 90K-100K is most likely all right, and 115-124K is probably all right, too. That said, try to keep it in the ideal range.