George Orwell’s novel Animal Farm (August, 1945) has 29,966 words.
Ray Bradbury’s novel Fahrenheit 451 (October, 1953) has 46,118 words.
Apple’s “Apple Developer Program License Agreement” (June, 2017) has 42,993 words.
In terms of plot, setting, and character, the license agreement is no match for either of the former two works. But all three could be classed as dystopian.