In the City of Calgary's 2012 municipal census, Citadel had a population of 7004101970000000000♠10,197 living in 7003347900000000000♠3,479 dwellings, a 0.3% increase from its 2011 population of 7004101710000000000♠10,171. With a land area of 2.7 km2 (1.0 sq mi), it had a population density of 3,780/km2 (9,780/sq mi) in 2012.
This neighbourhood has two public elementary schools: Citadel Park Elementary School (K-4) and St. Brigid Catholic School (K-9). After they finished Citadel Park, students would then attend Arbour Lake School. (5-9). St. Brigid is the other public elementary to junior high school in Citadel, which is part of the Calgary Catholic School District.