Killion was born on November 2, 1949, in Springfield, Illinois, where her father was a minister.[1] She was educated at Florida State University, earning a master's degree in statistics there in 1973.[2]
She worked for many years in the Census Bureau,[1] and as executive director of the Office for Research, Planning, and Evaluation of the Evangelical Lutheran Church in America.[3] At the Census Bureau, she served as chief of the statistical research division,[4] of the decennial statistical studies division,[3] of the planning, research and evaluation division,[5] and of the demographic statistical methods division.[6]
She retired from the Census Bureau in 2019, and died on November 23, 2021.[1]
