A new riding of Niagara Centre was created before the1999 election from small parts of theLincoln andSt. Catharines—Brock ridings, and almost all of theWelland—Thorold riding. The current electoral district was created in 2003: 74.9% of theriding came fromNiagara Centre riding, 22.5% fromErie—Lincoln and 2.7% fromNiagara Falls riding. The name was changed to Welland during redistricting in 2006. In 2018, the name was changed back to Niagara Centre.
From 1967 to 1975, the southern part of the riding was covered by theWelland South district.
The pre-2018 Welland riding consisted of the cities ofWelland,Thorold,Port Colborne, and the part of theCity of St. Catharines lying south of a line drawn from the western city limit east along St. Paul Street West, northeast along St. Paul Crescent, east and south along Twelve Mile Creek, and east along Glendale Avenue to the eastern city limit.[1]