| Official Name: | County of Two Hills No. 21 |
| Settlement Type: | Municipal district |
| Image Map1: | AB locator COUNTY OF TWO HILLS NO 21.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: | Central Alberta |
| Subdivision Type3: | Census division |
| Subdivision Name3: | 10 |
| Government Footnotes: | [1] |
| Leader Title: | Reeve |
| Leader Name: | Don Gulayec |
| Leader Title1: | Governing body |
| Leader Name1: | County of Two Hills Council |
| Leader Title2: | Administrative office |
| Leader Name2: | Two Hills |
| Established Title: | Established |
| Established Date: | 1963 |
| Established Title2: | Incorporated |
| Established Date2: | 1963 |
| Area Footnotes: | (2021) |
| Area Land Km2: | 2600.15 |
| Population As Of: | 2021 |
| Population Total: | 3412 |
| Population Density Km2: | 1.3 |
| Timezone: | MST |
| Utc Offset: | −7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | −6 |
| Coordinates: | 53.715°N -111.7461°W |
The County of Two Hills No. 21 is a municipal district in east-central Alberta, Canada. Located in Census Division No. 10, its municipal office is located in the Town of Two Hills.
The County's flag depicts an outline of the region, with a wheat bushel, cow, and oil derrick alongside the County's name and the seal of Alberta.
The County of Two Hills No. 21 was formed in 1963 through the amalgamation of the Municipal District of Eagle No. 81 and the Two Hills School Division.
The following urban municipalities are surrounded by the County of Two Hills No. 21.
The following hamlets are located within the County of Two Hills No. 21.
The following localities are located within the County of Two Hills No. 21.[3]
In the 2021 Census of Population conducted by Statistics Canada, the County of Two Hills No. 21 had a population of 3,412 living in 1,148 of its 1,590 total private dwellings, a change of from its 2016 population of 3,641. With a land area of, it had a population density of in 2021.[4]
In the 2016 Census of Population conducted by Statistics Canada, the County of Two Hills No. 21 had a population of 3,322 living in 1,105 of its 1,499 total private dwellings, a change from its 2011 population of 3,160. With a land area of 2637.18km2, it had a population density of in 2016.[5]