The portion of American families living in middle-income neighborhoods has declined significantly since 1970, according to a new study, as rising income inequality left a growing share of families in neighborhoods that are mostly low-income or mostly affluent.
Decline of heterogeneity. I'm not sure that's a good thing.
Browse population growth and decline, changes in racial and ethnic concentrations and patterns of housing development.
A really cool visualization tool for a quick glance.
[Link to Mapping the 2010 U.S. Census]
India’s Census 2011 shows that one in every three Indians now lives in an urban habitat and that the move towards towns and cities has happened mostly in south India, contiguously from Maharashtra to Tamil Nadu.According to the latest census, 31.2% of the total population lives in urban centres compared with 27.8% in 2001 and 25.5% in 1991. Of the 1.21 billion population, 833 million live in rural India while the remaining 377 million reside in urban India.
The fact that India has more than 1.21 billion people makes any percentage shift, let alone from 25% to 31% in two decades, for interesting times in the near future. Watch this space.
[Link to Fresh Thrust to Urbanization]
I spoke to Joel Kotkin, a professor of urban development, and asked him about these surveys. “I’ve been to Copenhagen,” (Monocle’s Number 2) he tells me “and it’s cute. But frankly, on the second day, I was wondering what to do.” So, if the results aren’t to his liking, what does he suggest? “We need to ask, what makes a city great? If your idea of a great city is restful, orderly, clean, then that’s fine. You can go live in a gated community. These kinds of cities are what is called ‘productive resorts’. Descartes, writing about 17th-century Amsterdam, said that a great city should be ‘an inventory of the possible’. I like that description.”
[Link to Liveable vs Lovable]
The Mexican home has been transformed. In 1990, one in five dwellings had a bare-earth floor. Now only 6% do. Virtually all have electricity, whereas 20 years ago one in ten went without. A tenth still lack sewerage, but this is better than the figure of one in three in 1990.More interesting still is what Mexicans put in those homes. More houses have televisions (93%) than fridges (82%) or showers (65%). In a hot country with dreadful television this is curious. Communications habits are interesting too: despite some of the world’s highest charges, two thirds of Mexicans have a mobile phone—though only four out of ten have a landline.
The better Mexico does economically, the lesser the problem of illegal immigration will be for the United States. It is never going to go away entirely. The United States have to learn to live with an acceptable level.
[Link to Mexico’s census: TVs outnumber fridges]
The first, quite striking fact about this part of the country is an enormous stability in population patterns over time. Those counties that were highly populated remain so, and those less populated remain relatively less populated.
The first studies from the new Census have started streaming in. I've already done my first set of sampling from the new Census for a survey project that began this month. The data is as fresh as it can get 
[Link to The Value of Urban Clustering]
Race, class, and the demographics of cycling…among other things, we get a clearer view of the race and income components of US bicycling.
[Link to Who Bikes?]
This map shows whether the proportion of young people (under 25) increased or decreased in rural counties between 2000 and 2009. Red counties saw a decrease in the percentage of their populations under 25. Green counties saw the proportion of that population get bigger.
[Source: Daily Yonder]
Colleges could maximize their real estate and financial position if they can bring in boomers as full or part-time residents. This is true not only in metropolitan areas but in broad parts of the country including the rural south, Midwest and places like Pennsylvania. Many boomers do not view retirement as a permanent vacation but as a place to start a “second life.”
Joel Kotin writes on the need to reinvent college towns to take advantage of emerging demographic trends that are highlighted by an increasingly vital aging population.