I think the reason for this is that most millennials are still in their 20's and family formation has been delayed by the economic problems by 5 - 10 years. Thu

I think the reason for this is that most millennials are still in their 20's and family formation has been delayed by the economic problems by 5 - 10 years. Thus, less 30 year olds have school-aged children versus their parent's generation. In 5-10 more years, I think you'll see more migration out to the burbs as this generation's children reach school age.