| Official Name: | Red Deer County |
| Settlement Type: | Municipal district |
| Image Map1: | AB locator RED DEER COUNTY.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: | 8 |
| Leader Title: | Mayor |
| Leader Name: | Jim Wood |
| Leader Title1: | Governing body |
| Leader Title2: | Manager |
| Leader Name2: | Curtis Herzberg |
| Leader Title3: | MP |
| Leader Name3: | Blaine Calkins |
| Leader Title4: | Administrative office |
| Leader Name4: | west of Red Deer |
| Established Title: | Established |
| Established Date: | 1944 |
| Established Title2: | Incorporated |
| Established Date2: | 1963 |
| Area Footnotes: | (2021) |
| Area Land Km2: | 3919.25 |
| Population As Of: | 2021 |
| Population Total: | 19933 |
| Population Density Km2: | 5.1 |
| Timezone: | MST |
| Utc Offset: | −7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | −6 |
| Coordinates: | 52.2681°N -113.8111°W |
| Postal Code Type: | Forward sortation area |
| Postal Code: | T4E |
Red Deer County is a municipal district in central Alberta, Canada within Census Division No. 8 and surrounding the City of Red Deer. The neighbouring municipalities of Red Deer County are Clearwater County to the west, Lacombe County to the north, the County of Stettler No. 6 to the east, Kneehill County to the southeast and Mountain View County to the south. It is located approximately midway between Edmonton and Calgary, bisected by the Queen Elizabeth II Highway and bounded on the north and east by the Red Deer River.
The following urban municipalities are surrounded by Red Deer County.[1]
The following hamlets are located within Red Deer County.
The following localities are located within Red Deer County.[3]
In the 2021 Census of Population conducted by Statistics Canada, Red Deer County had a population of 19,933 living in 7,430 of its 8,674 total private dwellings, a change of from its 2016 population of 19,531. With a land area of, it had a population density of in 2021.[5]
In the 2016 Census of Population conducted by Statistics Canada, Red Deer County had a population of 19,541 living in 7,097 of its 8,440 total private dwellings, a change from its 2011 population of 18,316. With a land area of 3961.85km2, it had a population density of in 2016.[6]
Agriculture plays a role in Red Deer County's economy including livestock and crop production. Red Deer County has dairies that make cheese, U-pick vegetable and fruit farms, and the largest organic farm in Alberta. It also has elk, deer, and apiary farms as well as a mouse farm, which raises white mice for the pet food industry. Lumber and mineral resources are also present in Red Deer County.