There are numerous types of suburbs (I think I now have at least 13 different types in one of my lectures in American Suburbanization) but one broad comparison includes looking at suburbs adjacent to cities (“inner-ring suburbs”) vs. suburbs on the metropolitan fringe (often referred to as “exurbs”). USA Today reports on some of the population trends in these two areas:

A new pattern is emerging this century. Most of the growth is happening on opposite ends of the suburban expanse: in older communities closest to the city and in the newer ones that are the farthest out.

“A few decades ago, all the growth was on the edge,” says Robert Lang, an urban sociologist at the University of Nevada-Las Vegas who analyzed 2010 Census data. “Now, there are citylike suburbs doing well on one side of the metropolis while conventional suburbs still flourish on the fringe.”

Close-in suburbs in the 50 largest metropolitan areas added 6 million people from 2000 to 2010, an 11.3% increase. The nation grew 9.7% in the same period.

At the same time, less populated suburbs on the outer edge grew even faster. They gained 6.7 million, a 24.5% increase.

DuPage County, Illinois is cited in this story as an example of suburban areas that are between these two extremes. Such “mature suburbs” had lower rates of growth as they “add[ed] 3.5 million people, a 7.8% increase” over the previous decade.

I like this emphasis on looking at the different rates of suburban growth depending on proximity to the city. There are a couple of stories that one could tell:

1. The suburban population is growing. I still am eager to hear the final 2010 figures that tell us what percentage of Americans live in suburbs compared to urban and rural areas.

2. The fastest-growing suburbs are on the metropolitan fringe. This is what might be considered typical suburban growth and/or “sprawl” as metropolitan regions continue to expand. It would be helpful to know how this 24.5% population increase over the last decade compares to previous decades.

3. Inner-ring suburbs are also growing quicker than the national growth rate. This may support recent findings that people want denser neighborhoods. It would be interesting to see how much of this growth is due to city dwellers moving just across municipal boundaries (for example, did those 200,000 people who left Chicago move to Oak Park or to Joliet?) or whether this population growth is from people from other areas, such as outer-ring suburbs, moving closer to the city.

4. So where does this leave mature suburbs? They are caught in the middle as they don’t have the open land for sprawl development but also are unlikely to have the denser or taller development of inner-ring suburbs. Most projects will either have to be small in-fill projects or bigger redevelopment projects. It will be interesting to see how these suburbs adapt: they were once outer-ring suburbs but will now have to make decisions about what direction to go.

h/t The Infrastructurist