| Official Name: | Municipal District of Ranchland No. 66 |
| Settlement Type: | Municipal district |
| Motto: | "Preserving our ranching heritage." |
| Seal Type: | Logo |
| Image Blank Emblem: | Cow moving within the MD of Ranchland.jpg |
| Blank Emblem Type: | Ranchland resident moving cattle. |
| Image Map1: | AB locator MUNICIPAL DISTRICT OF RANCHLAND NO 66.svg |
| Mapsize1: | 200 |
| Map Caption1: | Location within Alberta |
| Subdivision Type: | Country |
| Subdivision Name: | Canada |
| Subdivision Type1: | Province |
| Subdivision Name1: | Alberta |
| Subdivision Type2: | Region |
| Subdivision Name2: | Southern Alberta |
| Subdivision Type3: | Planning region |
| Subdivision Name3: | South Saskatchewan |
| Leader Title: | Reeve |
| Leader Name: | Ron Davis |
| Leader Title1: | Governing body |
| Leader Name1: | MD of Ranchland Council |
| Leader Title2: | Administrative office |
| Leader Name2: | Chain Lakes Provincial Park |
| Established Title: | Established |
| Established Date: | 1995 |
| Established Title2: | Incorporated |
| Established Date2: | 1995 |
| Area Footnotes: | (2021) |
| Area Land Km2: | 2636.75 |
| Population As Of: | 2021 |
| Population Total: | 110 |
| Population Density Km2: | 0 |
| Timezone: | MST |
| Utc Offset: | −7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | −6 |
The Municipal District of Ranchland No. 66 is a municipal district (MD) in southwest Alberta, Canada. Containing no urban communities of any kind, its municipal office is located in Chain Lakes Provincial Park,[1] approximately 38km (24miles) southwest of the Town of Nanton. Ranchland's rugged foothill terrain is unsuited for the crop agriculture practiced elsewhere in Alberta, and ranching remains the single livelihood of its inhabitants. With a 2016 population of 92, it is the least populated municipal district in Alberta, and its population density of 29 square kilometres for every resident is almost exactly equal to that of the Northwest Territories.
The MD was incorporated in 1995 from the Improvement District No. 6.[2]
Administration Building
The MD of Ranchland administration building is located at the junction of Highway 22 and Highway 533.
There are no communities located within the MD of Ranchland No. 66.
In the 2021 Census of Population conducted by Statistics Canada, the MD of Ranchland No. 66 had a population of 110 living in 41 of its 55 total private dwellings, a change of from its 2016 population of 92. With a land area of, it had a population density of in 2021.[3]
In the 2016 Census of Population conducted by Statistics Canada, the MD of Ranchland No. 66 had a population of 92 living in 38 of its 57 total private dwellings, a change from its 2011 population of 79. With a land area of 2638.7km2, it had a population density of in 2016.[4]
The MD of Ranchland No. 66's 2013 municipal census counted a population of 104.[5]