The page count of The Cat in the Hat is 61 pages.
Dr. Seuss, the pen name of Theodor Seuss Geisel, wrote and illustrated the book, which Random House published on March 12, 1957. Its compact 61-page format helped make it accessible to beginning readers while still delivering a lively, fully illustrated story.
Geisel created the book amid concerns that traditional early-reading primers, especially the Dick and Jane books, were too dull to motivate children. The Cat in the Hat used a limited vocabulary, repeated sounds, and energetic illustrations to make reading feel more entertaining. Its success helped inspire Random House’s Beginner Books line.
A common mix-up is assuming every edition has identical pagination. Hardcover, paperback, classroom, and international editions can differ slightly, but 61 pages is the standard page count associated with the original book and the canonical answer for this question.