Recent studies have suggested that the hippocampus (HC) is involved in cognitive and behavioral functions beyond memory.We aimed to investigate how the volume of each subfield of the HC is associated with distinct patterns of coping strategies, emotion regulation, and impulsivity in a healthy population. We studied a total of 218 healthy subjects using the Leipzig mind-brain-body dataset. Participants were assessed for coping strategies, emotion regulation, and impulsivity using the Cognitive Emotion Regulation Questionnaire(CERQ), Coping Orientations to Problems Experienced (COPE), Impulsive Behavior Scale (UPPS), and Behavioral Activation and Inhibition System (BAS/BIS). The associations between HC subfield volumes including CA1, CA2/3, CA4/DG, SR-SL-SM, and subiculum, and behavioral scores were examined using multiple linear regression models adjusted for possible confounders, including age, sex, years of education, handedness, total intracranial volume (ICV), and HC volume. The use of emotional support, venting, and positive reframing coping strategies were significantly and positively correlated with total, total right, and total left HC volumes. Venting was significantly associated with CA1 after adjusting for age, sex, handedness, and education (P=0.001, B = 0.265, P-FDR = 0.005).No significant association was observed between CERQ subscales and HC subfieldvolumesafter controlling for confounders and multiple analyses. However,sensation-seeking subscale of the UPPS-P was positively correlated with total and right CA2-CA3 volumes after adjustments for age, sex, handedness, ICV, and HC volumes(P=0.002, B = 0.266, P-FDR = 0.035).BAS and BIS subscales did not showsignificant relationshipwith HC subfield volumes. Patterns ofHC subfieldsvolumes are associated with copingstrategies, impulsivity, and emotion regulation.In particular, using emotional support, positive reframing, venting, and sensation seeking aresignificantly associated with certain HC subfield volumes.These findings suggest that the hippocampus may play a crucial role in modulating emotional responses and behavioral adaptations, offering potential targets for therapeutic interventions.