Epidemiologic features of pelvic fractures from 1976 to 1985 inclusive were studied in Skaraborg County, southwestern Sweden. The county had an average population of 269,000 inhabitants. During the 10-year period, 541 patients with pelvic fractures were treated in the hospital, and the incidence was 20 per 100,000. The incidence increased in the elderly, especially among women. Severe trauma dominated in age groups below 60 years, whereas moderate trauma dominated in older age groups. 81 percent were stable fractures of the pubic rami and 10 percent acetabular fractures. Associated injuries occurred in 21 percent of the patients, predominantly in those with severe trauma. The mean length of hospitalization was 3 weeks irrespective of whether or not the trauma was moderate or severe.