We examined the outcome of elderly trauma patients with pelvic fractures. Patients 65 years of age and older (elderly) with pelvic fractures were retrospectively compared with patients younger than 65 years with pelvic fractures and also with elderly patients without fracture. Over the study period, 1223 patients sustained a pelvic fracture (younger than 65 years, n=1066, 87.2%; elderly, n=157, 12.8%). These patients were also compared with 1770 elderly patients with blunt trauma without fracture. Although the pelvic fracture patients were equally matched for Injury Severity Score (21.2 +/- 13.4 nonelderly vs. 20.5 +/- 13.6 elderly), hospital length of stay was increased in the elderly (12.5 +/- 13.1 days vs. 11.5 +/- 14.1 days) and they had a higher mortality rate (20.4% [32 of 157] vs. 8.3% 88 of 10661). The elderly without fracture also had a higher mortality rate when compared with the younger patients (10.9% [191 of 1760]; P < 0.03). The elderly were more likely to die from multisystem organ failure (25.0% [eight of 32] vs. 10.2% [nine of 88]), whereas the nonelderly group was more likely to die from exsanguination (45.5% [40 of 88] younger than 65 years vs. 21.9% [seven of 32] 65 years or older; P < 0.05). Elderly patients with pelvic fracture have worse outcomes than their younger counterparts despite aggressive management at a Level I trauma center.