Hillis was elected as a Republican to the Ninety-second and to the seven succeeding Congresses (January 3, 1971-January 3, 1987).
Margaret Hillis was an older sister to Elwood "Bud" Hillis, who served as Representative to the United States Congress from Kokomo, Indiana for eight terms (1971–1987).
J. Hillis Miller | Elwood Haynes | Elwood | Elwood Zimmerman | Elwood, Nebraska | W. Daniel Hillis | Peyton Hillis | Margaret Hillis | Joey Elwood | James Elwood | "Jake" and "Elwood" | Elwood, Iowa | Elwood Hillis | Elwood Glover's Luncheon Date | Elwood "Bud" Hillis | Elwood Brown | Brigadier General Charles Elwood "Chuck" Yeager | Brian Elwood |