|Planning region||Lower Peace|
- Municipal district
January 1, 1995
|- Specialized municipality||June 23, 1999|
|Name change ||March 8, 2007|
|• Reeve||Josh Knelsen|
|• Governing body|
Mackenzie County Council
|• CAO||Lenard Racher|
|• Administrative office||Fort Vermilion|
|• Land||80,458.19 km2 (31,065.08 sq mi)|
|• Density||0.1/km2 (0.3/sq mi)|
|• Municipal census (2018)||12,514|
|Time zone||UTC−7 (MST)|
|• Summer (DST)||UTC−6 (MDT)|
Mackenzie County is a specialized municipality in northern Alberta, Canada. It is located in Census Division 17, along the Mackenzie Highway. Mackenzie County municipal office is located in the Hamlet of Fort Vermilion.
Originally Improvement District No. 23, the Municipal District of Mackenzie No. 23 incorporated as a municipal district on January 1, 1995. It subsequently changed its status to specialized municipality on June 23, 1999 "to address concerns about municipal government and management in a municipality that serves a number of unique communities within a very large territory." The Municipal District of Mackenzie No. 23 changed its name to Mackenzie County on March 8, 2007.
Mackenzie County is in the northwest corner of the province of Alberta. It borders the province of British Columbia to the west; the Northwest Territories to the north; Improvement District No. 24 (Wood Buffalo National Park) and the Regional Municipality of Wood Buffalo to the east; and Northern Sunrise County, the Paddle Prairie Metis Settlement, and the County of Northern Lights to the south. The Peace River meanders eastward through the southeast portion of Mackenzie County. Some of its water bodies include Bistcho Lake, Eva Lake, Margaret Lake, Wadlin Lake, Wentzel Lake, and Zama Lake. Land formations include Bootis Hill in the northwest, the Caribou Mountains in the northeast, Buffalo Head Hills in the south, Cameron Hills in the north, and Mount Watt northwest of the Town of High Level.
The population of Mackenzie County according to its 2018 municipal census is 12,514, a change of 6.5% from its 2015 municipal census population of 11,750.
In the 2016 Census of Population conducted by Statistics Canada, Mackenzie County recorded a population of 11,171 living in 3,088 of its 3,567 total private dwellings, a change of 2.2% from its 2011 population of 10,927. With a land area of 80,458.19 km2 (31,065.08 sq mi), it had a population density of 0.1/km2 (0.4/sq mi) in 2016.
In the 2011 Census, Mackenzie County had a population of 10,927 living in 2,900 of its 3,123 total dwellings, a change of 9.2% from its 2006 population of 10,002. With a land area of 80,478.12 km2 (31,072.78 sq mi), it had a population density of 0.1/km2 (0.4/sq mi) in 2011.
Mackenzie County is home to Caribou Mountains Wildland Provincial Park and Hay-Zama Lakes Wildland Provincial Park. It is also adjacent to Wood Buffalo National Park to the east.