|United States Senator
March 4, 1897 – March 3, 1903
|Preceded by||Fred Dubois|
|Succeeded by||Weldon B. Heyburn|
|Born||January 12, 1859
St. Louis, Missouri
|Died||October 21, 1938
|Spouse(s)||Anna M. Jacobs|
Early life 
Heitfeld attended public and private schools in St. Louis. He moved to Seneca, Kansas, then Washington, and finally to Lewiston, Idaho Territory, in 1883, where he engaged in agricultural pursuits and stock raising. On Nov. 25, 1884, he married Anna M. Jacobs (1861–1923), who was originally from Jacobs Prairie, Minnesota.
Political life 
Heitfeld was elected to the Idaho State Senate from 1894 to 1897, then was elected as a Populist to the United States Senate in 1896. He did not seek reelection in 1902 .
From 1914 to 1922 Heitfeld was a registrar of the United States Land Office at Lewiston. He engaged in fruit growing during this period. At the age of 71, in 1930 Heitfeld returned to politics as a member of the Nez Perce County Commission, eventually serving as its chair. He retired in 1938 and moved to Spokane, Washington, shortly before his death. He was the last living Senator to have served in the 19th century.
Heitfeld is buried in Normal Hill Cemetery in Lewiston, next to his wife.
|United States Senate|
Fred T. Dubois
|United States Senator (Class 3) from Idaho
Served alongside: George L. Shoup, Fred T. Dubois
Weldon B. Heyburn
|Most Senior Living U.S. Senator
(Sitting or Former)
June 3, 1938 - October 21, 1938
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