Hill was born and educated in Melbourne, Victoria and graduated from LaTrobe University with a Bachelor of Science in 1981 before moving to Townsville in 1982. She also completed a Masters in Public Health and Tropical Medicine at James Cook University. Hill is married to husband Shane, an ex-serviceman. They have two children, a daughter who is studying at University in Brisbane and a son who attends the Military School of Infantry in Singleton. Hill is a car enthusiast and also a passionate supporter of the Collingwood Football Team and the North Queensland Cowboys. Hill has been very active with school P & Cs, as well as junior sporting clubs, and as Townsville City Council's first female mayor, she is very focused on giving back to her community.