Most exclamation marks in a town name
Who
Saint-Louis-du-Ha! Ha!
What
2 total number
Where
Canada (Saint-Louis-du-Ha!-Ha!)
When
1874

There are very few geographical place names that officially feature an exclamation mark – the British town of Westward Ho! in Cornwall and, for a brief period in the 1980s, the town of Hamilton! in Ohio are two examples – but the only town with two exclamation marks in its name is the Canadian municipality of Saint-Louis-du-Ha!-Ha! (population: 1,318) in Quebec. The town was named in 1874, and the "Ha!-Ha!" refers to the archaic French "haha": a landscape feature that creates or acts as an invisible boundary line, most probably in this case the nearby Lake Témiscouata.

Towns – such as Brush!, Colorado, USA – have been known to adopt exclamation marks as publicity stunts, but rarely is the punctuation formally registered as part of the name.