Votes were redistributed to candidates after Cr Christine Banks resigned due to personal circumstances in February.
Mr Lowe said he was looking forward to rejoining council.
“I have been off council for about 15 months and a lot has happened and changed in that time,” he said.
“I have some catching up to do, but I have been speaking to people about the issues impacting them to better understand how we can best prepare for the future of our rapidly growing and changing shire.”
Mr Lowe was first elected to council in 2016 and spent one year as mayor and two years as deputy mayor.
Mitchell Shire Mayor Bill Chisholm said Mr Lowe brought with him important leadership and advocacy skills to the position.
“On behalf of council, I would like welcome David Lowe back. He was an important leader for Mitchell Shire during his time as mayor and deputy mayor,” he said.
“He is an advocate for our communities and I look forward to working with him to grow our shire and prepare for the needs of current and future residents and visitors.”
Mr Lowe said the Hume Fwy diamond interchange at Wallan and the Kilmore bypass were projects he would focus on during his time at council.
“I would really like to be around when they come to fruition, and I look forward to working to make that happen,” he said.
“We now also have the issue of the proposed quarry which will have a massive negative impact on South Ward residents.”
Councillor-elect Lowe will be sworn in on Tuesday, March 15.