A towns population has grown by 600 people in the last 2 years. On average, how many people will the town grow by in 5 years?
To find the average growth rate of the town's population over 5 years, we need to divide the total growth in population by the number of years.
Since the population has grown by 600 people in the last 2 years, the average growth rate per year is 600/2 = <<600/2=300>>300 people per year.
Therefore, the town will grow by an average of 300 people per year * 5 years = <<300*5=1500>>1500 people in 5 years. Answer: \boxed{1500}.