| Official Name: | County of Grande Prairie No. 1 |
| Nickname: | Alberta's First County |
| Settlement Type: | Municipal district |
| Seal Type: | Logo |
| Image Map1: | AB locator COUNTY OF GRANDE PRAIRIE NO 1.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: | Northern Alberta |
| Subdivision Type3: | Planning region |
| Subdivision Name3: | Upper Peace |
| Leader Title: | Reeve |
| Leader Title1: | Governing body |
| Leader Title2: | Administrator |
| Leader Name2: | Joulia Whittleton |
| Leader Title3: | Administrative office |
| Leader Name3: | Clairmont |
| Established Title: | Established |
| Established Date: | 1943 |
| Established Title2: | Incorporated |
| Established Date2: | 1951 |
| Area Footnotes: | (2021) |
| Area Land Km2: | 5790.59 |
| Population As Of: | 2021 |
| Population Total: | 23769 |
| Population Density Km2: | 4.1 |
| Timezone: | MST |
| Utc Offset: | −7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | −6 |
The County of Grande Prairie No. 1 is a municipal district in northwestern Alberta, Canada in Census Division No. 19.
It is bounded on the south by the Wapiti River, on the east by the Smoky River and on the west by the province of British Columbia.
The following urban municipalities are surrounded by the County of Grande Prairie No. 1.[1]
The following hamlets are located within the County of Grande Prairie No. 1.
The following localities are located within the County of Grande Prairie No. 1.[2]
Horse Lakes 152B is an Indian reserves located within the County of Grande Prairie No. 1.
In the 2021 Census of Population conducted by Statistics Canada, the County of Grande Prairie No. 1 had a population of 23,769 living in 8,354 of its 9,075 total private dwellings, a change of from its 2016 population of 22,502. 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 County of Grande Prairie No. 1 had a population of 22,303 living in 7,684 of its 8,291 total private dwellings, a change from its 2011 population of 19,724. With a land area of 5802.21km2, it had a population density of in 2016.[4]
The County of Grande Prairie No. 1 conducted a municipal census in 2012, which resulted in an estimated population of 21,157,[5] a 17.6% increase over its 2006 municipal census population of 17,989.[6]