The chart below reflects what the composition of the Supreme Court will be if Sandra Day O'Connor (who has announced her retirement effective immediately once her replacement is confirmed) is replaced by Samuel Alito, who was nominated on 31 October 2005 to take her place:
| Justice | Affiliation |
|---|---|
| John Roberts (Chief Justice) | Catholic |
| Stephen G. Breyer | Jewish |
| Ruth Bader Ginsburg | Jewish |
| Anthony M. Kennedy | Catholic |
| Antonin Scalia | Catholic |
| David H. Souter | Episcopalian |
| John Paul Stevens | Protestant |
| Clarence Thomas | Catholic |
| Samuel Alito | Catholic |
| Religious Affiliation | Justices | % of Justices in this religion | % of U.S. Pop. in this religion |
|---|---|---|---|
| Christian | Kennedy, Scalia, Thomas, Souter, Stevens, Roberts, Alito | 78% | 76.5% |
| Protestant | Stevens | 11% | 53.0% |
| Catholic | Kennedy, Scalia, Thomas, Roberts, Alito | 56% | 24.5% |
| Episcopalian * | Souter | 11% | 1.7% |
| Jewish | Breyer, Ginsburg | 22% | 1.5% |
| Justice | Affiliation |
|---|---|
| William H. Rehnquist (Chief Justice) | Lutheran (ELCA) |
| Stephen G. Breyer | Jewish |
| Ruth Bader Ginsburg | Jewish |
| Anthony M. Kennedy | Catholic |
| Sandra Day O'Connor | Episcopalian |
| Antonin Scalia | Catholic |
| David H. Souter | Episcopalian |
| John Paul Stevens | Protestant |
| Clarence Thomas | Catholic |
| Religious Affiliation | Justices | % of Justices in this religion | % of U.S. Pop. in this religion |
|---|---|---|---|
| Christian | Kennedy, Scalia, Thomas, O'Connor, Souter, Stevens, Rehnquist | 78% | 76.5% |
| Protestant | Stevens, Rehnquist | 22% | 53.0% |
| Lutheran | Rehnquist | 11% | 5.2% |
| Catholic | Kennedy, Scalia, Thomas | 33% | 24.5% |
| Episcopalian * | O'Connor, Souter | 22% | 1.7% |
| Jewish | Breyer, Ginsburg | 22% | 1.5% |
* Episcopalian and Protestantism: Episcopalians have been left out of the "Protestant" category in the table above. Depending on the type of classification system consulted, Episcopalians are sometimes classified as "Protestant" and sometimes not. Episcopalians are part of the Anglican communion, which pre-dates Martin Luther's Protestant Reformation and is often referred to as the "Anglo-Catholic" church, a branch mid-way between Catholicism and Protestantism. If one includes the two Episcopalian justices, 44% (4 out of 9) of the Supreme Court justices are Protestant.
| Affiliation | # of Justices | % of Justices | % of U.S. population, 2000 |
|---|---|---|---|
| Episcopalian | 35 | 32.4% | 1.7% |
| Presbyterian | 19 | 17.6% | 2.8% |
| Catholic | 11 | 10.2% | 24.5% |
| Unitarian | 10 | 9.3% | 0.2% |
| Jewish | 7 | 6.4% | 1.5% |
| Methodist | 5 | 4.6% | 8.0% |
| Baptist | 3 | 2.7% | 18.0% |
| Congregationalist | 2 | 1.9% | 0.6% |
| Disciples of Christ | 2 | 1.9% | 0.3% |
| Lutheran | 1 | 0.9% | 5.2% |
| Quaker | 1 | 0.9% | 0.1% |
| Huguenot | 1 | 0.9% | |
| "Protestant" not further defined | 13 | 12.0% | * 9.7% |
| Not a member of any church | 1 | 0.9% | |
| Total | 108 | 100.0% | 74.4% |
Some major U.S. religious groups which have never been represented on the U.S. Supreme Court: Pentecostals (2.1%), Church of Jesus Christ of Latter-day Saints/Mormons (2%), Muslims (1.5%), GLBT (1.5%), Buddhists (0.5% to 0.8%), Jehovah's Witnesses (0.6%), Mennonites (0.6%), Eastern Orthodox (approx. 0.5%).
* "Protestant" not further defined: According to 2000 Gallup polling data, 57% of Americans identify themselves as Protestants. But most also identify with a specific denomination or denominational family. In the 1990 Kosmin NSRI survey, 9.7% of Americans stated their religious preference as "Protestant", without further denominational identification.
It is important to note that the relative proportion of membership in various religious groups has changed dramatically over the course of U.S. history. For example, when the nation was founded, Congregationalists and Episcopalians were among the largest denominations, but there were very few Catholics. Today, the Catholic Church is the largest U.S. denomination. Also, there are only nine Supreme Court justices, so it would be impossible to ever have a Court that reflects every possible demographic group. So, to compare the proportion of Supreme Court justices in various denominations from throughout U.S. history versus the proportion of U.S. citizens in those denominations today is not as meaningful as, for example, comparing the current religious composition of the U.S. House of Representatives to the current religious demographics of the U.S. population.
| Justice | Religion |
|---|---|
| Charles E. Hughes | Baptist |
| Howell E. Jackson | Baptist |
| Hugo L. Black | Baptist |
| Anthony M. Kennedy | Catholic |
| Antonin Scalia | Catholic |
| Clarence Thomas | Catholic |
| John Roberts | Catholic |
| Edward D. White | Catholic |
| Frank Murphy | Catholic |
| Joseph McKenna | Catholic |
| Pierce Butler | Catholic |
| Roger B. Taney | Catholic |
| William J. Brennan | Catholic |
| Sherman Minton | Catholic (convert after retired) |
| Oliver Ellsworth | Congregationalist |
| Nathan Clifford | Congregationalist; later Unitarian |
| Joseph R. Lamar | Disciples of Christ |
| James C. McReynolds | Disciples of Christ |
| Alfred Moore | Episcopal |
| Bushrod Washington | Episcopal |
| Byron R. White | Episcopal |
| David H. Souter | Episcopal |
| Edward T. Sanford | Episcopal |
| George Sutherland | Episcopal |
| Harlan F. Stone | Episcopal |
| Horace H. Lurton | Episcopal |
| James F. Byrnes | Episcopal |
| James Iredell | Episcopal |
| James Wilson | Episcopal |
| John A. Campbell | Episcopal |
| John Jay | Episcopal |
| John Marshall | Episcopal |
| John Rutledge | Episcopal |
| Melville W. Fuller | Episcopal |
| Morrison R. Waite | Episcopal |
| Owen J. Roberts | Episcopal |
| Peter V. Daniel | Episcopal |
| Philip P. Barbour | Episcopal |
| Potter Stewart | Episcopal |
| Robert H. Jackson | Episcopal |
| Rufus W. Peckham | Episcopal |
| Salmon P. Chase | Episcopal |
| Samuel Chase | Episcopal |
| Sandra Day O'Connor | Episcopal |
| Stephen J. Field | Episcopal |
| Thomas Johnson | Episcopal |
| Thurgood Marshall | Episcopal |
| Ward Hunt | Episcopal |
| William H. Moody | Episcopal |
| Willis Van Devanter | Episcopal |
| Henry Baldwin | Episcopal |
| Gabriel Duval | Huguenot |
| Abe Fortas | Jewish |
| Arthur J. Goldberg | Jewish |
| Benjamin N. Cardozo | Jewish |
| Felix Frankfurter | Jewish |
| Louis D. Brandeis | Jewish |
| Ruth Bader Ginsburg | Jewish |
| Stephen G. Breyer | Jewish |
| William H. Rehnquist | Lutheran (ELCA) |
| Charles E. Whittaker | Methodist |
| Frederick M. Vinson | Methodist |
| Harry A. Blackmun | Methodist |
| Lucius Q. C. Lamar | Methodist |
| John McLean | Methodist-Episcopal |
| David Davis | Not a member of any church. |
| Brockholst Livingston | Presbyterian |
| George Shiras, Jr. | Presbyterian |
| John Catron | Presbyterian |
| John M. Harlan | Presbyterian |
| Joseph P. Bradley | Presbyterian |
| Lewis F. Powell, Jr. | Presbyterian |
| Mahlon Pitney | Presbyterian |
| Robert C. Grier | Presbyterian |
| Samuel Blatchford | Presbyterian |
| Smith Thompson | Presbyterian |
| Stanley Matthews | Presbyterian |
| Thomas Todd | Presbyterian |
| Tom C. Clark | Presbyterian |
| Warren E. Burger | Presbyterian |
| William Johnson | Presbyterian |
| William O. Douglas | Presbyterian |
| William Strong | Presbyterian |
| William Paterson | Presbyterian |
| John Blair | Presbyterian; Episcopal |
| Noah H. Swayne | Quaker |
| Benjamin R. Curtis | Unitarian; then Episcopal |
| Harold H. Burton | Unitarian |
| Horace Gray | Unitarian |
| Joseph Story | Unitarian |
| Oliver W. Holmes | Unitarian |
| Samuel F. Miller | Unitarian |
| Wiley B. Rutledge | Unitarian |
| William Cushing | Unitarian |
| William H. Taft | Unitarian |
| David J. Brewer | Protestant |
| Earl Warren | Protestant |
| Henry B. Brown | Protestant |
| James M. Wayne | Protestant |
| John H. Clarke | Protestant |
| John McKinley | Protestant |
| John Paul Stevens | Protestant |
| Levi Woodbury | Protestant |
| Robert Trimble | Protestant |
| Samuel Nelson | Protestant |
| Stanley F. Reed | Protestant |
| William B. Woods | Protestant |
| William R. Day | Protestant |
| Service | Birth | |||||
|---|---|---|---|---|---|---|
| Name, state | Term | Yrs | Place | Date | Died | Religion |
| Chief Justices | ||||||
| John Jay, N.Y. | 1789-1795 | 5 | N.Y. | 1745 | 1829 | Episcopal |
| John Rutledge, S.C. | 1795 | 0 | S.C. | 1739 | 1800 | Church of England |
| Oliver Ellsworth, Conn. | 1796-1800 | 4 | Conn. | 1745 | 1807 | Congregationalist |
| John Marshall, Va. | 1801-1835 | 34 | Va. | 1755 | 1835 | Episcopal |
| Roger B. Taney, Md. | 1836-1864 | 28 | Md. | 1777 | 1864 | Catholic |
| Salmon P. Chase, Ohio | 1864-1873 | 8 | N.H. | 1808 | 1873 | Episcopal |
| Morrison R. Waite, Ohio | 1874-1888 | 14 | Conn. | 1816 | 1888 | Episcopal |
| Melville W. Fuller, Ill. | 1888-1910 | 21 | Maine | 1833 | 1910 | Episcopal |
| Edward D. White, La. | 1910-1921 | 10 | La. | 1845 | 1921 | Catholic |
| William H. Taft, Conn. | 1921-1930 | 8 | Ohio | 1857 | 1930 | Unitarian |
| Charles E. Hughes, N.Y. | 1930-1941 | 11 | N.Y. | 1862 | 1948 | Baptist |
| Harlan F. Stone, N.Y. | 1941-1946 | 4 | N.H. | 1872 | 1946 | Episcopal |
| Frederick M. Vinson, Ky. | 1946-1953 | 7 | Ky. | 1890 | 1953 | Methodist |
| Earl Warren, Calif. | 1953-1969 | 15 | Calif. | 1891 | 1974 | Protestant |
| Warren E. Burger, Va. | 1969-1986 | 17 | Minn. | 1907 | 1995 | Presbyterian |
| William H. Rehnquist, Ariz. | 1986-2005 | 19 | Wis. | 1924 | 2005 | Lutheran |
| John Roberts, D.C. | 2005- | — | N.Y. | 1955 | — | Catholic |
| Associate Justices | ||||||
| James Wilson, Pa. | 1789-1798 | 8 | Scotland | 1742 | 1798 | Episcopal |
| John Rutledge, S.C. | 1790-1791 | 1 | S.C. | 1739 | 1800 | Church of England |
| William Cushing, Mass. | 1790-1810 | 20 | Mass. | 1732 | 1810 | Unitarian |
| John Blair, Va. | 1790-1796 | 5 | Va. | 1732 | 1800 | Presbyterian |
| James Iredell, N.C. | 1790-1799 | 9 | England | 1751 | 1799 | Episcopal |
| Thomas Johnson, Md. | 1792-1793 | 0 | Md. | 1732 | 1819 | Episcopal |
| William Paterson, N.J. | 1793-1806 | 13 | Ireland | 1745 | 1806 | Presbyterian (Protestant) |
| Samuel Chase, Md. | 1796-1811 | 15 | Md. | 1741 | 1811 | Episcopal |
| Bushrod Washington, Va. | 1799-1829 | 30 | Va. | 1762 | 1829 | Episcopal |
| Alfred Moore, N.C. | 1800-1804 | 3 | N.C. | 1755 | 1810 | Episcopal |
| William Johnson, S.C. | 1804-1834 | 30 | S.C. | 1771 | 1834 | Presbyterian |
| Brockholst Livingston, N.Y. | 1807-1823 | 16 | N.Y. | 1757 | 1823 | Presbyterian |
| Thomas Todd, Ky. | 1807-1826 | 18 | Va. | 1765 | 1826 | Presbyterian |
| Gabriel Duval, Md. | 1811-1835 | 23 | Md. | 1752 | 1844 | French Protestant |
| Joseph Story, Mass. | 1812-1845 | 33 | Mass. | 1779 | 1845 | Unitarian |
| Smith Thompson, N.Y. | 1823-1843 | 20 | N.Y. | 1768 | 1843 | Presbyterian |
| Robert Trimble, Ky. | 1826-1828 | 2 | Va. | 1777 | 1828 | Protestant |
| John McLean, Ohio | 1830-1861 | 31 | N.J. | 1785 | 1861 | Methodist-Epis. |
| Henry Baldwin, Pa. | 1830-1844 | 14 | Conn. | 1780 | 1844 | Episcopal (Trinity Church) |
| James M. Wayne, Ga. | 1835-1867 | 32 | Ga. | 1790 | 1867 | Protestant |
| Philip P. Barbour, Va. | 1836-1841 | 4 | Va. | 1783 | 1841 | Episcopal |
| John Catron, Tenn. | 1837-1865 | 28 | Pa. | 1786 | 1865 | Presbyterian |
| John McKinley, Ala. | 1837-1852 | 14 | Va. | 1780 | 1852 | Protestant |
| Peter V. Daniel, Va. | 1841-1860 | 18 | Va. | 1784 | 1860 | Episcopal |
| Samuel Nelson, N.Y. | 1845-1872 | 27 | N.Y. | 1792 | 1873 | Protestant |
| Levi Woodbury, N.H. | 1845-1851 | 5 | N.H. | 1789 | 1851 | Protestant |
| Robert C. Grier, Pa. | 1846-1870 | 23 | Pa. | 1794 | 1870 | Presbyterian |
| Benjamin R. Curtis, Mass. | 1851-1857 | 5 | Mass. | 1809 | 1874 | Unitarian; then Episcopal |
| John A. Campbell, Ala. | 1853-1861 | 8 | Ga. | 1811 | 1889 | Episcopal |
| Nathan Clifford, Maine | 1858-1881 | 23 | N.H. | 1803 | 1881 | Congregationalist; later Unitarian |
| Noah H. Swayne, Ohio | 1862-1881 | 18 | Va. | 1804 | 1884 | Quaker |
| Samuel F. Miller, Iowa | 1862-1890 | 28 | Ky. | 1816 | 1890 | Unitarian |
| David Davis, Ill. | 1862-1877 | 14 | Md. | 1815 | 1886 | Not a member of any church |
| Stephen J. Field, Calif. | 1863-1897 | 34 | Conn. | 1816 | 1899 | Episcopal |
| William Strong, Pa. | 1870-1880 | 10 | Conn. | 1808 | 1895 | Presbyterian |
| Joseph P. Bradley, N.J. | 1870-1892 | 21 | N.Y. | 1813 | 1892 | Presbyterian |
| Ward Hunt, N.Y. | 1872-1882 | 9 | N.Y. | 1810 | 1886 | Episcopal |
| John M. Harlan, Ky. | 1877-1911 | 33 | Ky. | 1833 | 1911 | Presbyterian |
| William B. Woods, Ga. | 1880-1887 | 6 | Ohio | 1824 | 1887 | Protestant |
| Stanley Matthews, Ohio | 1881-1889 | 7 | Ohio | 1824 | 1889 | Presbyterian |
| Horace Gray, Mass. | 1882-1902 | 20 | Mass. | 1828 | 1902 | Unitarian or Congregationalist |
| Samuel Blatchford, N.Y. | 1882-1893 | 11 | N.Y. | 1820 | 1893 | Presbyterian |
| Lucius Q. C. Lamar, Miss. | 1888-1893 | 5 | Ga. | 1825 | 1893 | Methodist |
| David J. Brewer, Kan. | 1889-1910 | 20 | Asia Minor | 1837 | 1910 | Protestant |
| Henry B. Brown, Mich. | 1890-1906 | 15 | Mass. | 1836 | 1913 | Protestant |
| George Shiras, Jr., Pa. | 1892-1903 | 10 | Pa. | 1832 | 1924 | Presbyterian |
| Howell E. Jackson, Tenn. | 1893-1895 | 2 | Tenn. | 1832 | 1895 | Baptist |
| Edward D. White, La.* | 1894-1910 | 16 | La. | 1845 | 1921 | Catholic |
| Rufus W. Peckham, N.Y. | 1895-1909 | 13 | N.Y. | 1838 | 1909 | Episcopal |
| Joseph McKenna, Calif. | 1898-1925 | 26 | Pa. | 1843 | 1926 | Catholic |
| Oliver W. Holmes, Mass. | 1902-1932 | 29 | Mass. | 1841 | 1935 | Unitarian |
| William R. Day, Ohio | 1903-1922 | 19 | Ohio | 1849 | 1923 | Protestant |
| William H. Moody, Mass. | 1906-1910 | 3 | Mass. | 1853 | 1917 | Episcopal |
| Horace H. Lurton, Tenn. | 1909-1914 | 4 | Ky. | 1844 | 1914 | Episcopal |
| Charles E. Hughes, N.Y.* | 1910-1916 | 5 | N.Y. | 1862 | 1948 | Baptist |
| Willis Van Devanter, Wyo. | 1910-1937 | 26 | Ind. | 1859 | 1941 | Episcopal |
| Mahlon Pitney, N.J. | 1912-1922 | 10 | N.J. | 1858 | 1924 | Presbyterian |
| Joseph R. Lamar, Ga. | 1910-1916 | 4 | Ga. | 1857 | 1916 | Disciples of Christ |
| James C. McReynolds, Tenn. | 1914-1941 | 26 | Ky. | 1862 | 1946 | Disciples of Christ |
| Louis D. Brandeis, Mass. | 1916-1939 | 22 | Ky. | 1856 | 1941 | Jewish |
| John H. Clarke, Ohio | 1916-1922 | 5 | Ohio | 1857 | 1945 | Protestant |
| George Sutherland, Utah | 1922-1938 | 15 | England | 1862 | 1942 | Episcopal |
| Pierce Butler, Minn. | 1923-1939 | 16 | Minn. | 1866 | 1939 | Catholic |
| Edward T. Sanford, Tenn. | 1923-1930 | 7 | Tenn. | 1865 | 1930 | Episcopal |
| Harlan F. Stone, N.Y.* | 1925-1941 | 16 | N.H. | 1872 | 1946 | Episcopal |
| Owen J. Roberts, Pa. | 1930-1945 | 15 | Pa. | 1875 | 1955 | Episcopal |
| Benjamin N. Cardozo, N.Y. | 1932-1938 | 6 | N.Y. | 1870 | 1938 | Jewish |
| Hugo L. Black, Ala. | 1937-1971 | 34 | Ala. | 1886 | 1971 | Baptist |
| Stanley F. Reed, Ky. | 1938-1957 | 19 | Ky. | 1884 | 1980 | Protestant |
| Felix Frankfurter, Mass. | 1939-1962 | 23 | Austria | 1882 | 1965 | Jewish |
| William O. Douglas, Conn. | 1939-1975 | 36 | Minn. | 1898 | 1980 | Presbyterian |
| Frank Murphy, Mich. | 1940-1949 | 9 | Mich. | 1890 | 1949 | Catholic |
| James F. Byrnes, S.C. | 1941-1942 | 1 | S.C. | 1879 | 1972 | Episcopal |
| Robert H. Jackson, Pa. | 1941-1954 | 13 | N.Y. | 1892 | 1954 | Episcopal |
| Wiley B. Rutledge, Iowa | 1943-1949 | 6 | Ky. | 1894 | 1949 | Unitarian |
| Harold H. Burton, Ohio | 1945-1958 | 13 | Mass. | 1888 | 1964 | Unitarian |
| Tom C. Clark, Tex. | 1949-1967 | 17 | Tex. | 1899 | 1977 | Presbyterian |
| Sherman Minton, Ind. | 1949-1956 | 7 | Ind. | 1890 | 1965 | Catholic |
| John M. Harlan, N.Y. | 1955-1971 | 16 | Ill. | 1899 | 1971 | Presbyterian |
| William J. Brennan, Jr., N.J. | 1956-1990 | 33 | N.J. | 1906 | 1997 | Catholic |
| Charles E. Whittaker, Mo. | 1957-1962 | 5 | Kan. | 1901 | 1973 | Methodist |
| Potter Stewart, Ohio | 1958-1981 | 23 | Mich. | 1915 | 1985 | Episcopal |
| Byron R. White, Colo. | 1962-1993 | 31 | Colo. | 1917 | 2002 | Episcopal |
| Arthur J. Goldberg, Ill. | 1962-1965 | 2 | Ill. | 1908 | 1990 | Jewish |
| Abe Fortas, Tenn. | 1965-1969 | 3 | Tenn. | 1910 | 1982 | Jewish |
| Thurgood Marshall, N.Y. | 1967-1991 | 24 | Md. | 1908 | 1993 | Episcopal |
| Harry A. Blackmun, Minn. | 1970-1994 | 24 | Ill. | 1908 | 1999 | Methodist |
| Lewis F. Powell, Jr., Va. | 1972-1987 | 15 | Va. | 1907 | 1998 | Presbyterian |
| William H. Rehnquist, Ariz.* | 1972-1986 | 14 | Wis. | 1924 | 2005 | Lutheran |
| John Paul Stevens, Ill. | 1975- | — | Ill. | 1920 | — | Protestant |
| Sandra Day O'Connor, Ariz. | 1981- | — | Tex. | 1930 | — | Episcopal |
| Antonin Scalia, D.C. | 1986- | — | N.J. | 1936 | — | Catholic |
| Anthony M. Kennedy, Calif. | 1988- | — | Calif. | 1936 | — | Catholic |
| David H. Souter, N.H. | 1990- | — | Mass. | 1939 | — | Episcopal |
| Clarence Thomas, D.C. | 1991- | — | Ga. | 1948 | — | Catholic |
| Ruth Bader Ginsburg, D.C. | 1993- | — | N.Y. | 1933 | — | Jewish |
| Stephen G. Breyer, Mass. | 1994- | — | Calif. | 1938 | — | Jewish |
Although we have added additional information and expanded upon its presdentation considerably, a major source of the table above was: "Members of the Supreme Court of the United States" in the "History and Government" section of the Lycos InfoPlease website (http://www.infoplease.com/ipa/A0101281.html; viewed 26 March 2001).