BACKGROUND: Biological age (BA) is regarded as a more accurate marker of aging than chronological age and is commonly used to assess associations with age-related diseases. The relationship between BA measures and the colorectal cancer (CRC) has not yet been investigated. METHODS: This study utilized data from the National Health and Nutrition Examination Survey. BA was quantified using the Klemera-Doubal method age (KDMAge) and phenotypic age (PhenoAge), based on 13 common clinical biomarkers. The prevalence of CRC across quartiles of BA indicators was compared using weighted Chi-square tests. Weighted multivariable logistic regression models were used to assess the association between BA indicators and CRC. RESULTS: A total of 36,684 participants were included. The weighted prevalence of CRC showed a significant and consistent upward trend across ascending quartiles of chronological age, KDMAge, and PhenoAge, even within gender and age subgroups (all CONCLUSION: Biological aging are positively associated with the prevalence of CRC regardless of gender, particularly among the elderly.