Background: Currently, there is a paucity of literature on caregiver burden among postoperative geriatric patients. This is of particular interest to the field of urogynecology, as many of these patients are 65 or older. Objective: Given the growing volume of geriatric patients and their utilization of health care resources, this study was conducted to characterize the burden of geriatric urogynecologic surgery patients on their caregivers. Materials and Methods: Using a prospective double cohort design for the study, researchers enrolled female patients ( ‡ 65 years) undergoing pelvic surgery and their caregivers. Patients were administered questionnaires, including the Short Form Health Survey-12 (SF-12) consisting of physical (PCS) and mental composites (MCS) at baseline, 2, 6, and 12 weeks postoperatively. Caregivers received the SF-12, Zarit Burden Inventory (ZBI), and Caregiver Burden Inventory (CBI) at the same intervals. Results: Forty-eight pairs were analyzed. The majority of caregivers were white (96.6%) and male (65.5%), and were spouses (54.2%). In patients, SF-12 PCS scores declined from 44.98 -1.74 at baseline to 31.47 -1.22 ( p = 0.0001) at 2 weeks, with a return by 12 weeks (45.92 -1.66; p < 0.0001), reflecting their recovery. As patient physical health temporarily declined, caregiver burden temporarily increased. In caregivers, ZBI scores worsened from 7.05 -1.0 to 9.09 -1.09 ( p = 0.002) and CBI from 4.66 -0.76 to 8.74 -0.78 ( p = 0.0001) at 2 weeks following surgery, suggesting a greater burden at that time. Nevertheless, resolution was noted by 12 weeks in ZBI scores (8.08 -1.18; p = 0.03) and CBI scores (5.68 -0.95; p = 0.0002), indicating improvement of these constraints. Among caregivers, there were no associations noted between total ZBI or CBI and demographics. Conclusions: Informal caregivers of urogynecologic surgery patients experience temporary burden postoperatively which is likely to resolve by 12 weeks. This information enables physicians to provide counseling to caregivers by including them in the patients' surgical consultations. ( J GYNECOL SURG 31:155)