Cheaper by the Dozen stands as a unique blend of situational family humor and biography, which can initially mislead some readers into thinking it is a work of fiction. The narrative offers a rich tapestry of reactions due to its portrayal of a large family navigating life through the early 20th century. Some young readers might find it hard to fathom the Gilbreths' ability to manage such a sizable household while also excelling professionally. Those from fragmented families might yearn for the love, care, and structure that the Gilbreths epitomized. On the other hand, readers accustomed to a more relaxed upbringing may view Frank Gilbreth’s authoritative parenting style and his occasional use of corporal punishment with unease. His sometimes domineering and self-assured nature might strike others as excessive.

Critiques of the book, including its dated language and attitudes, such as Lillian Gilbreth referring to "Eskimo" in a derogatory manner or describing Chinese people as "heathens," must be contextualized within its historical setting from 1871 to 1924. Despite these outdated perspectives, Cheaper by the Dozen offers an inspiring glimpse into the balance of work and family life, a harmony that few modern working couples achieve. It celebrates a deep sense of family unity, underscoring that family life—when grounded in affection, creativity, and mutual respect—can be both enriching and unforgettable, regardless of its size.

The story enlivens the hearts of cynics and reassures those with hope in the enduring power of family. For readers captivated by the Gilbreths' adventures, the sequel, Belles on Their Toes (1950), offers an expanded journey into the lives of this remarkable family.