1895 – 1948
1895
September 1985 – Proclamation to create the Municipality of Castlereagh
November 1895 – First election for Municipality of Castlereagh
| Arthur Leopold Hough | – Mayor |
| Edward Clemson | |
| John William Devlin | |
| Edward Gates | |
| James Mills Jnr | |
| Isaac Smith |
1896
| Retiring Aldermen | |
| John William Devlin | – Re-elected |
| James Mills Jnr | – Re-elected |
| Elected Aldermen | |
| Arthur Leopold Hough | – Mayor |
| Edward Clemson | |
| John William Devlin | |
| Edward Gates | |
| James Mills Jnr | |
| Isaac Smith |
1897
| Retiring Aldermen | |
| Edward Clemson | – Re-elected |
| Isaac Smith | – Re-elected |
| Elected Aldermen | |
| Arthur Leopold Hough | – Mayor |
| Edward Clemson | |
| John William Devlin | |
| Edward Gates | |
| James Mills Jnr | |
| Isaac Smith |
1898
| Retiring Aldermen | |
| Edward Gates | – Defeated |
| Arthur Leopold Hough | – Re-elected |
| Elected Aldermen | |
| Arthur Leopold Hough | – Mayor |
| Edward Clemson | |
| John William Devlin | |
| Joshua Field | |
| James Mills Jnr | |
| Isaac Smith |
1899
January 1899 – resigned, replaced by Edward Gates.
| Retiring Aldermen | |
| John William Devlin | – Re-elected |
| James Mills Jnr | – Re-elected |
| Elected Aldermen | |
| John William Devlin | – Mayor |
| Edward Clemson | |
| Joshua Field | |
| Edward Gates | Replaced Hough |
| Arthur Leopold Hough | Resigned in January 1899 |
| James Mills Jnr | |
| Isaac Smith |
1900
| Retiring Aldermen | |
| Edward Clemson | – Re-elected unopposed |
| Isaac Smith | – Re-elected unopposed |
| Elected Aldermen | |
| John William Devlin | – Mayor |
| Edward Clemson | |
| Joshua Field | |
| Edward Gates | Resigned in June 1900 |
| James Mills Jnr | |
| John Shaw | Replaced Gates in July 1900 |
| Isaac Smith |
1901
| Retiring Aldermen | |
| Joshua Field | – Re-elected unopposed |
| John Shaw | – Re-elected unopposed |
| Elected Aldermen | |
| John William Devlin | – Mayor |
| Edward Clemson | |
| William Peter Clemson | Replaced Shaw in March 1901 |
| Joshua Field | |
| James Mills Jnr | |
| John Shaw | Resigned in March 1901. Replaced by Clemson |
| Isaac Smith |
1902
| Retiring Aldermen | |
| John William Devlin | – Re-elected |
| James Mills Jnr | – Re-elected |
| Elected Aldermen | |
| John William Devlin | – Mayor |
| Edward Clemson | |
| William Peter Clemson | In June 1902, seat declared vacant due to non attendance |
| Robert William Farlow | Replaced Clemson |
| Joshua Field | |
| James Mills Jnr | |
| Isaac Smith |
1903
Joshua Field is elected as alderman for Penrith Municipal Council in 1903.
| Retiring Aldermen | |
| Isaac Smith | – Re-elected unopposed |
| Edward Clemson | – Re-elected unopposed |
| Elected Aldermen | |
| Isaac Smith | – Mayor |
| Edward Clemson | |
| John William Devlin | |
| Robert William Farlow | |
| Joshua Field | Resigned, replaced by Mayo |
| Frederick George Mayo | |
| James Mills Jnr |
1904
| Retiring Aldermen | |
| Robert William Farlow | – Re-elected unopposed |
| Frederick George Mayo | – Re-elected unopposed |
| Elected Aldermen | |
| Isaac Smith | – Mayor |
| Edward Clemson | |
| John William Devlin | |
| Robert William Farlow | |
| Frederick George Mayo | |
| James Mills Jnr |
1905
| Retiring Aldermen | |
| John William Devlin | – Re-elected |
| James Mills Jnr | – Re-elected |
| Elected Aldermen | |
| Robert William Farlow | – Mayor |
| Edward Clemson | |
| John William Devlin | |
| John McCale | Replaced Mayo in July 1905 |
| Frederick George Mayo | Resigned and left the district in 1905 |
| James Mills Jnr | |
| Isaac Smith |
1906
| Retiring Aldermen | |
| Isaac Smith | – Re-elected unopposed |
| Edward Clemson | – Re-elected unopposed |
| Elected Aldermen | |
| Robert William Farlow | – Mayor |
| Edward Clemson | |
| John William Devlin | |
| John McCale | Resigned in August 1906 |
| R. A. Marks | Replaced Mills in September 1906 |
| James Mills Jnr | Resigned in August 1906 |
| John Shaw | Replaced McCale in September 1906 |
| Isaac Smith |
1907
| Retiring Aldermen | |
| Robert William Farlow | – Re-elected unopposed |
| John Shaw | – Re-elected unopposed |
| Elected Aldermen | |
| Robert William Farlow | – Mayor |
| Edward Clemson | |
| John William Devlin | |
| R.A. Marks | Resigned or seat was declared vacant in September 1907 |
| Walter James Ransley | Replaced Shaw in April 1907 |
| John Shaw | Resigned in March 1907. |
| Isaac Henry Shields | Replaced Marks in September 1907 |
| Isaac Smith |
1908
First Triennial Election
| Elected Aldermen | |
| Isaac Smith | – Mayor |
| Edward Clemson | |
| Robert William Farlow | Absent then replaced by Mills |
| James Mills Jnr | Replaced Farlow in October 1908 |
| John Shaw | |
| Isaac Henry Shields | |
| Mr West |
1909
| Elected Aldermen | |
| Isaac Smith | – Mayor |
| Edward Clemson | |
| James Mills Jnr. | |
| John Shaw | |
| Isaac Henry Shields | |
| Mr West |
1910
| Elected Aldermen | |
| John Shaw | – Mayor |
| Edward Clemson | |
| James Mills Jnr. | |
| Isaac Henry Shields | |
| Isaac Smith | |
| Mr West |
1911
Triennial Election year
| Elected Aldermen | |
| Isaac Smith | – Mayor |
| Edward Clemson | |
| Athol Colless Howell | |
| Charles William Parker | |
| John Shaw | |
| Isaac Henry Shields |
1912
| Elected Aldermen | |
| Isaac Henry Shields | – Mayor |
| Edward Clemson | |
| Athol Colless Howell | |
| Charles William Parker | |
| John Shaw | |
| Isaac Smith |
1913
| Elected Aldermen | |
| Charles William Parker | – Mayor |
| Edward Clemson | |
| Athol Colless Howell | |
| John Shaw | |
| Isaac Henry Shields | |
| Isaac Smith |
1914
Triennial Election year
| Elected Aldermen | |
| Charles William Parker | – Mayor |
| Athol Colless Howell | |
| Percy Landers | |
| William Logan | |
| John Shaw | |
| Isaac Henry Shields |
1915
| Elected Aldermen | |
| Charles William Parker | – Mayor |
| Athol Colless Howell | |
| Percy Landers | |
| William Logan | |
| John Shaw | |
| Isaac Henry Shields |
1916
| Elected Aldermen | |
| Charles William Parker | – Mayor. resigned in March 1916, replaced by Howell. |
| Athol Colless Howell | |
| William Peter Howell | – Mayor. Replaced Parker in May 1916 |
| Percy Landers | |
| William Logan | |
| John Shaw | Died in May 1916 |
| Isaac Henry Shields |
1917
Triennial Election year
| Elected Aldermen | |
| Percy Landers | – Mayor |
| John Holihan | |
| Percy Arnold Jay | |
| Charles John Alaster Mitchell | |
| Isaac Henry Shields | |
| Theodore Reginald Rupert Smith |
1918
| Elected Aldermen | |
| Percy Landers | – Mayor |
| John Holihan | |
| Percy Arnold Jay | |
| Charles John Alaster Mitchell | |
| Isaac Henry Shields | |
| Theodore Reginald Rupert Smith |
1919
| Elected Aldermen | |
| Isaac Henry Shields | – Mayor |
| John Holihan | |
| Percy Arnold Jay | |
| Percy Landers | |
| Charles John Alaster Mitchell | |
| Theodore Reginald Rupert Smith |
1920
Triennial Election year
| Elected Aldermen | |
| Percy Landers | – Mayor. Resigned in July 1920 and left the district. |
| Enoch Heath | |
| John Holihan | |
| William Peter Howell | |
| Charles John Alaster Mitchell | Resigned in August 1920 |
| Theodore Reginald Rupert Smith | – Mayor from July 1920 |
1921
| Elected Aldermen | |
| Theodore Reginald Rupert Smith | – Mayor |
| Enoch Heath | |
| John Holihan | |
| William Peter Howell | |
| Ernest Leslie Raymond Keech | |
| Robert Parker |
1922
| Elected Aldermen | |
| Ernest Leslie Raymond Keech | – Mayor |
| Enoch Heath | |
| John Holihan | |
| William Peter Howell | |
| Robert Parker | |
| Theodore Reginald Rupert Smith |
1923
Triennial Election year
| Elected Aldermen | |
| Ernest Leslie Raymond Keech | – Mayor |
| Peter William Howell | |
| William Peter Howell | |
| Walter Charles Nichols | |
| Robert Parker | |
| Theodore Reginald Rupert Smith |
1924
| Elected Aldermen | |
| Theodore Reginald Rupert Smith | – Mayor |
| Peter William Howell | |
| William Peter Howell | |
| Ernest Leslie Raymond Keech | |
| Walter Charles Nichols | |
| Robert Parker |
1925
| Elected Aldermen | |
| Theodore Reginald Rupert Smith | – Mayor |
| Peter William Howell | |
| William Peter Howell | |
| Ernest Leslie Raymond Keech | |
| Walter Charles Nichols | |
| Robert Parker |
1926
Triennial Election year
| Elected Aldermen | |
| Theodore Reginald Rupert Smith | – Mayor |
| Charles Carter | |
| Peter William Howell | |
| Ernest Leslie Raymond Keech | |
| Robert Parker | |
| A. Spinks | – Formerly of Kogarah Council |
1927
| Elected Aldermen | |
| Ernest Leslie Raymond Keech | – Mayor |
| Charles Carter | Resigned in February 1927, replaced by Nichols in March |
| Peter William Howell | |
| Walter Charles Nichols | Replaced Carter in March 1927 |
| Robert Parker | |
| Theodore Reginald Rupert Smith | |
| A. Spinks |
1928
| Elected Aldermen | |
| Ernest Leslie Raymond Keech | – Mayor |
| Peter William Howell | |
| Walter Charles Nichols | |
| Robert Parker | |
| Theodore Reginald Rupert Smith | |
| A. Spinks |
1929
Triennial Election year
| Elected Aldermen | |
| Theodore Reginald Rupert Smith | – Mayor |
| Arthur Clemson | |
| Athol Colless Howell | |
| Peter William Howell | |
| Arthur Edwin Luxford | |
| Robert Walter Parker |
1930
| Elected Aldermen | |
| Theodore Reginald Rupert Smith | – Mayor |
| Arthur Clemson | |
| Athol Colless Howell | |
| Peter William Howell | |
| Arthur Edwin Luxford | |
| Robert Walter Parker |
1931
| Elected Aldermen | |
| Robert Walter Parker | – Mayor |
| Arthur Clemson | |
| Athol Colless Howell | |
| Peter William Howell | |
| Arthur Edwin Luxford | |
| Theodore Reginald Rupert Smith |
1932
Triennial Election year
| Elected Aldermen | |
| Theodore Reginald Rupert Smith | – Mayor |
| Joseph Carter | |
| Cecil Thomas Higgins | |
| Arthur Edwin Luxford | |
| Robert Walter Parker | |
| John Oliver Tickner |
1933
| Elected Aldermen | |
| Theodore Reginald Rupert Smith | – Mayor |
| Joseph Carter | |
| Cecil Thomas Higgins | |
| Arthur Edwin Luxford | |
| Robert Walter Parker | |
| John Oliver Tickner |
1934
| Elected Aldermen | |
| Theodore Reginald Rupert Smith | – Mayor |
| Joseph Carter | |
| Cecil Thomas Higgins | |
| Arthur Edwin Luxford | |
| Robert Walter Parker | |
| John Oliver Tickner |
1935
Triennial Election year
Council expanded to seven Aldermen
| Elected Aldermen | |
| Charles Carter | – Mayor |
| Edward Beach Andrews | |
| Claude Edward Luxford | |
| Herbert Fredrick Munday | |
| George Carrington Hammond Neagle | |
| Robert Walter Parker | |
| Theodore Reginald Rupert Smith |
1936
| Elected Aldermen | |
| Theodore Reginald Rupert Smith | – Mayor |
| Edward Beach Andrews | |
| Charles Carter | |
| Claude Edward Luxford | |
| Herbert Fredrick Munday | |
| George Carrington Hammond Neagle | Resigned in May 1936. Replaced by Thomas H. G. Parkes in June 1936. |
| Robert Walter Parker |
1937
| Elected Aldermen | |
| Theodore Reginald Rupert Smith | – Mayor |
| Edward Beach Andrews | |
| Charles Carter | |
| Claude Edward Luxford | |
| Herbert Fredrick Munday | |
| Robert Walter Parker | |
| Thomas Harry Gordon Parkes |
1938
Triennial Election year
May 1938 –
| Elected Aldermen | |
| Edward Beach Andrews | – Mayor. Resigned in May 1938. |
| Charles Carter | |
| Ernest George Field | Replaced Andrews |
| Claude Edward Luxford | |
| Robert Walter Parker | |
| Thomas Harry Gordon Parkes | |
| Theodore Reginald Rupert Smith | – Mayor from May 1938 |
| Ernest Thorpe |
1939
| Elected Aldermen | |
| Charles Carter | – Mayor |
| Ernest George Field | |
| Claude Edward Luxford | |
| Robert Walter Parker | |
| Thomas Harry Gordon Parkes | |
| Theodore Reginald Rupert Smith | |
| Ernest Thorpe |
1940
| Elected Aldermen | |
| Charles Carter | – Mayor |
| Ernest George Field | Resigned in December 1940 |
| Claude Edward Luxford | |
| Robert Walter Parker | |
| Thomas Harry Gordon Parkes | |
| Theodore Reginald Rupert Smith | |
| Ernest Thorpe | Resigned in December 1940 |
1941
| Elected Aldermen | |
| Charles Carter | – Mayor |
| Gordon Alfred Judd | |
| Claude Edward Luxford | |
| Robert Ernest Nutt | |
| Robert Walter Parker | |
| Thomas Harry Gordon Parkes | |
| Theodore Reginald Rupert Smith |
1942
Triennial Election year
| Elected Aldermen | |
| Charles Carter | – Mayor |
| Herbert Charles Barnes | |
| Gordon Alfred Judd | |
| Claude Edward Luxford | |
| Robert Ernest Nutt | |
| Robert Walter Parker | |
| Theodore Reginald Rupert Smith |
1943
| Elected Aldermen | |
| Charles Carter | – Mayor |
| Herbert Charles Barnes | |
| Gordon Alfred Judd | |
| Claude Edward Luxford | |
| Robert Ernest Nutt | |
| Robert Walter Parker | |
| Theodore Reginald Rupert Smith |
1944
| Elected Aldermen | |
| Charles Carter | – Mayor |
| Herbert Charles Barnes | |
| Gordon Alfred Judd | |
| Claude Edward Luxford | |
| Robert Ernest Nutt | |
| Robert Walter Parker | |
| Theodore Reginald Rupert Smith |
1945
Triennial Election year
| Elected Aldermen | |
| Charles Carter | – Mayor. Died in August 1945. |
| Herbert Charles Barnes | – Mayor from September 1945 |
| William Hunter Howell | |
| Claude Edward Luxford | |
| Robert Ernest Nutt | |
| Robert Walter Parker | |
| Theodore Reginald Rupert Smith | Replaced Carter |
| Arthur Joseph Stephenson |
1946
| Elected Aldermen | |
| Herbert Charles Barnes | – Mayor. Resigned and left the district in December 1946 |
| William Hunter Howell | |
| Claude Edward Luxford | |
| Robert Ernest Nutt | |
| Robert Walter Parker | |
| Theodore Reginald Rupert Smith | |
| Arthur Joseph Stephenson |
1947
| Elected Aldermen | |
| Robert Ernest Nutt | – Mayor. Died in April 1947 |
| William Hunter Howell | – Mayor from April 1947 |
| Claude Edward Luxford | |
| Robert Walter Parker | |
| Charles Eugene Preston | Replaced Nutt |
| Theodore Reginald Rupert Smith | |
| Arthur Joseph Stephenson | |
| Walter Harold Thomas |
1948
Council dissolved at the end of 1948 to amalgamate with Penrith Municipal Council in January 1949.
| Elected Aldermen | |
| Theodore Reginald Rupert Smith | – Mayor |
| Symon Joseph Dwyer | Replaced Stephenson in February 1948 |
| William Hunter Howell | |
| Claude Edward Luxford | |
| Robert Walter Parker | |
| Charles Eugene Preston | Resigned and left the district in December 1947. Replaced by Ivy Laurence in February 1948 |
| Arthur Joseph Stephenson | Resigned in January 1948. replaced by Dwyer |
| Walter Harold Thomas |