| February 28, 1929 45 Stat. 1346 |
This act divided the Eighth Circuit into two circuits, organizing the judicial districts of Colorado, Kansas, New Mexico, Oklahoma, Utah, and Wyoming as the Tenth Circuit and the judicial districts of Arkansas, Iowa, Minnesota, Missouri, Nebraska, North Dakota, and South Dakota as a new Eighth Circuit. The act transferred all appellate judges residing within the Tenth Circuit to the court of appeals for that circuit. Of the six judgeships authorized for the former Eighth Circuit, four were assigned to the new Eighth Circuit and two to the Tenth Circuit. The act authorized one additional judgeship for the Eighth Circuit and two additional judgeships for the Tenth Circuit. |
| August 3, 1949 63 Stat. 493 |
One additional judgeship authorized for the U.S. Court of Appeals for the Tenth Circuit. |
| May 19, 1961 75 Stat. 80 |
One additional judgeship authorized for the U.S. Court of Appeals for the Tenth Circuit. |
| June 18, 1968 82 Stat. 184 |
One additional judgeship authorized for the U.S. Court of Appeals for the Tenth Circuit. |
| October 20, 1978 92 Stat. 1629 |
One additional judgeship authorized for the U.S. Court of Appeals for the Tenth Circuit. |
| July 10, 1984 98 Stat. 333 |
Two additional judgeships authorized for the U.S. Court of Appeals for the Tenth Circuit. |
| December 1, 1990 104 Stat. 5089 |
Two additional judgeships authorized for the U.S. Court of Appeals for the Tenth Circuit. |
| Authorized Judgeships | |
| 1929 | 4 |
| 1949 | 5 |
| 1961 | 6 |
| 1968 | 7 |
| 1978 | 8 |
| 1984 | 10 |
| 1990 | 12 |