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. It is Alberta's fourth most populous city – after Calgary, Edmonton, and Lethbridge. The city is located in aspen parkland, a region of rolling hills that is home to oil, grain, and cattle production. It is a centre for oil and agriculture distribution, and the surrounding region is a major centre for petrochemical production. With a recorded population of 100,418 in the Canada 2016 census, Red Deer became the third Alberta city to surpass 100,000 people.