Morinville was settled by Father Morin, an Oblate missionary, who brought many French settlers in the late 1800s, followed by several German pioneers—hence its many French and German families such as Hittinger, Riopel, Boissonnault, Tailleur, Houle, Labonté, St. Laurent, Maisonneuve, Bokenfohr, Krauskopf, Rustemier, and Meyers.

The monument located in the St. Jean Baptiste Park lists the many names of pioneers and settlers to Morinville. Once situated on the street at 100 Avenue and 100 Street, the monument was moved to its present location in 2000, as it was a safety hazard and very difficult to enjoy with all the traffic at the intersection.

The first post-office opened in 1894.

The Roman Catholic Church of the St. Jean Baptiste Parish was built in 1907. The church, along with its adjacent but now inoperative convent Morinville Convent, was declared a historical site in 1975. In 2005, the grounds of the church were landscaped with a clock tower, new grass, trees and shrubs, in celebration of Alberta's 100th anniversary as a province.

Morinville has a long history of successful business ventures as one of the first locations in Western Canada to open a Royal Bank of Canada in 1910 and a credit union in 1940. A series of successful international business ventures include Champion Pet Foods that exports around the world.

The population of the Town of Morinville according to its 2016 municipal census is 9,893, a 7000520000000000000♠5.2% change from its 2014 municipal census population of 9,402.

In the 2011 Census, the Town of Morinville had a population of 8,569 living in 3,078 of its 3,261 total dwellings, a 26.5% change from its 2006 population of 6,775. With a land area of 11.34 km² (4.38 sq mi), it had a population density of 755.6/km² (1,957.1/sq mi) in 2011.

In 2006, Morinville had a population of 6,775 living in 2,401 dwellings, a 3.6% increase from 2001. The town has a land area of 11.34 km² (4.38 sq mi) and a population density of 597.4 inhabitants per square kilometre.

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