USCCB, Particular law on canon 1031 §1 on the age for permanent deacons, June 2009.
Canon 1031, §3 - Permanent Diaconate: Age
Complementary Norm:In accord with Canon Law, the United States Conference of Catholic Bishops establishes the minimum age for ordination to the permanent diaconate at thirty-five for all candidates, married or celibate. The establishment of a maximum age for ordination is at the discretion of the diocesan bishop, keeping in mind the particular needs and expectations of the diocese regarding diaconal ministry and life.
Approved: General Meeting, June 2003
Reviewed: Holy See (Congregation for Catholic Education and Congregation for Clergy): Decree (Prot. N. 78/2000), October 30, 2004 ad quinquennium experimenti; Renewed by Decree (Prot. N. 78/2000), October 12, 2009 ad alterum quinquennium.
Promulgated: National Directory for the Formation, Ministry, and Life of Permanent Deacons in the United States, United States Conference of Catholic Bishops, 2009, art. 87.
USCCB, Particular law on canon 1031 §1 on the age for permanent deacons, June 2009. Accessed 30 December 2015 at: http://www.usccb.org/beliefs-and-teachings/what-we-believe/canon-law/complementary-norms/canon-1031-3-permanent-diaconate-age.cfm