Philadelphia looks at which of its census tracts have doubled in population in 10 years, and find some interesting trends.
Single-family houses and multi-family units have sprouted, bringing a crop of mostly young families with children whose arrival has posed a challenge to these areas. Students must be taught, traffic managed, recreation provided and open space saved, all at the same time. "There are three things that attract growth," says Aaron Klibaner, senior planner for Montgomery County. "A major highway, sewer and water service." ... "The next hot spot is wherever a developer can purchase a tract of land," ... "As we look toward 2010, the population growth appears to be inexorable, with people trying to find their own little green spot in the country."
Thanks to Tom Collins
FULL STORY: Looking at sprawl by the numbers

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

USGS Water Science Centers Targeted for Closure
If their work is suspended, states could lose a valuable resource for monitoring, understanding, and managing water resources.

End Human Sacrifices to the Demanding Gods of Automobile Dependency and Sprawl
The U.S. has much higher traffic fatality rates than peer countries due to automobile dependency and sprawl. Better planning can reduce these human sacrifices.

Seattle Transit Asked to Clarify Pet Policy
A major dog park near a new light rail stop is prompting calls to update and clarify rules for bringing pets on Seattle-area transit systems.

Oregon Bill Would End Bans on Manufactured Housing
The bill would prevent new developments from prohibiting mobile homes and modular housing.

Nashville Doesn’t Renew Bike Share Contract, Citing Lost Federal Funding
The city’s bike share system, operated by BCycle, could stop operating if the city doesn’t find a new source of funding.
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