Red Deer is a city in Central Alberta, Canada. It is located near the midpoint of the Calgary-Edmonton Corridor and is surrounded by Red Deer County. Red Deer is Alberta's third most populous city—after Calgary and Edmonton. The city is located in aspen parkland, a region of rolling hills that is subject to oil, grain, and cattle production. Red Deer is a centre for oil and agriculture distribution, and the surrounding region is a major centre for petrochemical production.