1920 - Mayor Issac Lamont MatthewsMembers of Council:
- James White Crooks
- John Oswald Hourigan
- Leo J. B. Bolduc
- Sidney Wilson
- James Asher Dunbar
- Arthur Melville Woodside
- Reginald Crofts Powell
- Frederick William Barton
- William Phoenix Cooke
- William Brown Sime
1921 - Mayor Issac Lamont Matthews
Members of Council:
- James White Crooks
- John Oswald Hourigan
- Leo J. B. Bolduc
- Frederick William Barton
- Dr. George Edwin Eakins
- Lester Cain
- William Phoenix Cooke
- Reginald Crofts Powell
- James Asher Dunbar
- James Jenkins Southern
In October 1921, the Port Arthur Council enacted a by-law, to be put in effect January 1922, stating that Aldermen would be elected to two-year terms. Elections would be held each year to fill half of the Council seats. The elections of January 1922 assigned half of the elected Aldermen to two-year terms and half to one-year terms, so that only five would be up for election again in 1923.
1922 - Mayor Issac Lamont Matthews
Members of Council:
- James White Crooks - 2 Years to December 1923
- John Oswald Hourigan - 2 Years to December 1923
- Leo J. B. Bolduc - 2 Years to December 1923
- Dr. George Dewin Eakins - 2 Years to December 1923
- Frederick William Barton - 2 Years to December 1923
- Reginald Crofts Powell - 1 Year to December 1922
- James Asher Dunbar - 1 Year to December 1922
- Lester Cain - 1 Year to December 1922 - Resigned in April 1922
- James Jenkins Southern - 1 Year to December 1922
- William Phoenix Cooke - 1 Year to December 1922
- George Gibbon - 1 Year to December 1922 - Replaced Cain in August 1922
1923 - Mayor Issac Lamont Matthews
Members of Council:
- James White Crooks - 2 Years to December 1923
- John Oswald Hourigan - 2 Years to December 1923
- Leo J. B. Bolduc - 2 Years to December 1923
- Dr. George Edwin Eakins - 2 Years to December 1923
- Frederick William Barton - 2 Years to December 1923
- Dr. Herman R. Bryan - 2 Years to December 1924
- William Phoenix Cooke - 2 Years to December 1924
- George Gibbon - 2 Years to December 1924
- Reginald Crofts Powell - 2 Years to December 1924
- James Jenkins Southern - 2 Years to December 1924
1924 - Mayor James White Crooks
Members of Council:
- John Oswald Hourigan - 2 Years to December 1925
- Dr. Charles Norman Simpson - 2 Years to December 1925
- Leo J. B. Bolduc - 2 Years to December 1925
- Frederick William Barton - 2 Years to December 1925
- John 'Jock' Murray - 2 Years to December 1925
- George Gibbon - 2 Years to December 1924
- Dr. Herman R. Bryan - 2 Years to December 1924
- William Phoenix Cooke - 2 Years to December 1924
- James Jenkins Southern - 2 Years to December 1924
- Reginald Crofts Powell - 2 Years to December 1924 - Resigned on February 17, 1924
- Joseph William White - 2 Years to December 1924 - Replaced Powell on May 26, 1924
1925 - Mayor James White Crooks
Members of Council:
- William Phoenix Cooke - 2 Years to December 1926
- George Gibbon - 2 Years to December 1926
- James Jenkins Southern - 2 Years to December 1926
- Joseph William White - 2 Years to December 1926
- Kenneth Campbell - 2 Years to December 1926
- John Oswald Hourigan - 2 Years to December 1925
- Leo J. B. Bolduc - 2 Years to December 1925
- Frederick William Barton - 2 Years to December 1925
- Dr. Charles Norman Simpson - 2 Years to December 1925
- John 'Jock Murray - 2 Years to December 1925
In 1925, the Port Arthur Council voted that all Aldermen would be elected to one-year terms, beginning in January of 1926. Those Aldermen elected in 1925 were allowed to remain on Council for the remainder of their two-year terms, without needing to be re-elected.
1926 - Mayor Milton Francis
Members of Council:
- William Phoenix Cooke - 2 Years to December 1926
- George Gibbon - 2 Years to December 1926
- James Jenkins Southern - 2 Years to December 1926
- Joseph Williams White - 2 Years to December 1926
- Kenneth Campbell - 2 Years to December 1926
- John Oswald Hourigan - 1 Year to December 1926
- Donald A. Clark - 1 Year to December 1926
- Thomas Falls - 1 Year to December 1926
- Grenville Walsh - 1 Year to December 1926
- Robert Lloyd Seamen - 1 Year to December 1926
1927 - Mayor Milton Francis
Members of Council:
- John Oswald Hourigan
- Donald A. Clark
- William Phoenix Cooke
- Thomas Falls
- George Gibbon
- James Jenkins Southern
- Grenville Walsh
- Leslie C. Hallam
- Harry Hogarth
- Bruce L. Morrison
1928 - Mayor John Oswald Hourigan
Members of Council:
- George Gibbon
- Leslie C. S. Hallam
- Harry Hogarth
- Joseph Wood
- Thomas Falls
- James Jenkins Southern
- Grenville Walsh
- William Phoenix Cooke
- Samuel Wright
- Donald A. Clark
1929 - Mayor George Gibbon
Members of Council:
- William Phoenix Cooke
- Grenville Walsh
- Harry Hogarth
- Frederick Gawthorne Cooper
- Lawrence August Greene
- John W. White
- Joseph Wood
- Samuel Wright
- William John Stirrett
- John Francis Teskey