Eileen Cammack was born in Sydney, the daughter of Reginald and Mary Scott-Young. She was educated at Monte Sant'Angelo College, North Sydney and the University of Sydney, from which she graduated in Science (BSc, 1936) and in Medicine (BS, MB,1940). She was a resident medical officer and senior resident medical officer at St George Hospital 1940-41, and was a Captain, in the Australian Army Medical Corps (AIF) 1941-46. She married Dr, William Cammack in 1944 and they had two sons and a daughter.

Eileen Cammack established the first pathology service in Penrith and the first pathology laboratory at Nepean District Hospital in 1948. She was honorary pathologist at Nepean Hospital from 1948 and was Government Medical officer for the Nepean District from 1961. She was elected to the Penrith City Council in 1972 and became the first woman Mayor of Penrith for three terms, 1975-78.

She was the patron of many local organisations, including the Nepean Historical Society, the Girl Guides Association, and the St Marys and Penrith Associations. She was commodore of the Nepean Canoe Club, foundation president of the Business and Professional Women's Club, Penrith and president (1981) and life member of the Penrith and District Chamber of Commerce.
She was awarded the Queen's Jubilee Silver Medal in 1977, made an OBE. 1978 and made a Paul Harris Fellow (Rotary's highest award) in 1980. The Eileen Cammack Sports Fields, Penrith, are named in her honour.

Sources used to compile this entry: Decker, Dianne, Women in Australian Parliament and Local Government: An updated history 1975-1992, Australian Local Government Women's Association, Canberra, 1992; Smith, A. Viola, Women in Australian Parliaments and Local Governments, Past and Present, Australian Local Government Women's Association; Australian National Advisory Committee on International Women's Year, Australian Local Government Women's Association, Canberra, 1975, 148 pp; http://www.penrithcity.nsw.gov.au/index.asp?id=207 (accessed 4 February 2005).