La Mitis is a regional county municipality in the Bas-Saint-Laurent region in eastern Quebec, Canada on the Gaspé peninsula. It is named for the Mitis River (The Mitis) which has its source in the region (at Lac Inférieur) and flows through the central part of the region before emptying into the Saint Lawrence River.

The county seat is in Mont-Joli.

There are 18 subdivisions within the RCM:

Historical Census Data – La Mitis Regional County Municipality, Quebec

Year Pop. ±% 1991 20,157 —     1996 20,160 +0.0% 2001 19,326 −4.1%	Year Pop. ±% 2006 19,365 +0.2% 2011 18,942 −2.2% 2016 18,210 −3.9%

Canada Census Mother Tongue – La Mitis Regional County Municipality, Quebec
Census		Total		French				English				French & English				Other
Year		Responses		Count	Trend	Pop %		Count	Trend	Pop %		Count	Trend	Pop %		Count	Trend	Pop %
2016		17,920		17,665	2.9%	98.58%		140	7.7%	0.78%		65	0.0%	0.36%		50	0.0%	0.28%
2011		18,430		18,185	1.6%	98.67%		130	25.7%	0.71%		65	44.4%	0.35%		50	58.3%	0.27%
2006		18,815		18,475	0.05%	98.19%		175	25.0%	0.93%		45	18.2%	0.24%		120	480.0%	0.64%
2001		18,705		18,485	4.4%	98.82%		140	3.7%	0.75%		55	15.4%	0.29%		25	44.4%	0.13%
1996		19,580		19,335	n/a	98.75%		135	n/a	0.69%		65	n/a	0.33%		45	n/a	0.23%

Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border:

• Autoroutes
  • A-20
• Principal Highways
  • R-132
• Secondary Highways
  • R-234
  • R-298
• External Routes
  • None

• List of regional county municipalities and equivalent territories in Quebec
• Seignory of Lac-Mitis
• Mitis Seignory

Media related to La Mitis Regional County Municipality at Wikimedia Commons