[8] Pope Paul VI erected the Diocese of Houma-Thibodaux on June 5, 1977, taking its territory from the Archdiocese of New Orleans.

[9] Boudreaux became known for placing a ban on church fairs in 1985, objecting to the consumption of alcohol and overall frivolity at such events.

The second bishop of Houma-Thibodaux was Monsignor Charles Jarrell of Lafayette in Louisiana, appointed by Pope John Paul II in 1993.

[11][12] John Paul II replaced Jarrell in Houma-Thibodaux with Bishop Sam Jacobs from the Diocese of Alexandria in Louisiana.

[19] Police arrested Reverend Robert Melancon from Sacred Heart Parish in Cut Off, Louisiana, on aggravated rape charges in June 1995.

[21][22] Reverend Patrick Kujawa of Holy Cross Church in Morgan City was arrested in January 2000 on charges of processing 62 pornographic images of boys.

[23] He pleaded guilty in December 2000 to possessing child pornography and was sentenced to inpatient therapy and ten years on probation.

[24] In January 2019, the Diocese of Houma-Thibodaux released the names of 14 clergy who were accused of committing acts of sex abuse.