Mapping ‘Rich Blocks, Poor Blocks’

By Matt Stiles | | Topics: Demographics

Rich Blocks, Poor Blocks” allows users to get information about income in their neighborhoods, using the 2006-2010 American Community Survey estimates* compiled by the U.S. Census Bureau. Here’s a map of Washington, D.C., which — as I’ve noted before — is segregated by race, educational attainment and income:

Source: Rich Blocks, Small Blocks

Source: Rich Blocks, Small Blocks

* These data have high margins of error in small geographic units like Census tracts, which this service uses, so don’t take the figures literally. Still, the estimates can be useful for spotting broader trends about communities.

Thanks to the wife for sharing this discovery.

Mapping Internet Access In U.S. Homes

By Matt Stiles | | Topics: Policy & Politics

About three quarters of Americans have access to the Internet at home, according to a new survey released this week by the U.S. Census Bureau.

New Hampshire, Washington and Utah top the list, with more than 82 percent of their residents having Internet access. New Mexico, Mississippi and Arkansas are at the bottom, with about 64 percent of residents able to get online at home. Here’s a state-by-state map:

Source: U.S. Census Bureau, Current Population Survey, October 2010.

Census Bureau Releases 1940 Data. America Has Changed.

By Matt Stiles | | Topics: Demographics

After 72 years, the U.S. Census Bureau today released data from its decennial count in 1940. The release includes a fascinating graphic about how Americans have changed over time. Here’s just one section, comparing our workforce: 

There’s much more in the graphic: housing, demographics, etc. Check it out

Charting Metro Diversity

By Matt Stiles | | Topics: Demographics

Interesting news from my favorite Texas city, according to this story the Houston Chronicle

The Houston region is now the most ethnically diverse large metropolitan area in the country, surpassing New York City.

Two suburbs – Missouri City and Pearland – have become even more diverse than the city of Houston. Other suburbs aren’t far behind.

This chart compares the demographics of cities in the Houston area: 

This chart compares the largest metro areas in the country: 

Read the full report, which compared the number of demographic groups and their relative size, here [PDF].

A ‘Radical’ View of DC’s Demographics

By Matt Stiles | | Topics: Demographics

I’ve been obsessed with William Rankin’s ‘radical cartography’ site for more than a year. One map in particular — a detailed view of Washington, D.C.’s segregated neighborhoods — has stuck with me more than others over time.  

The map used 2000 Census data to show how black residents are clustered in northeast and southeast neighborhoods, while white residents live in the northwest. He also mapped poverty, income, crime and education — creating a stunning series of images about inequality in the city.

I don’t have Rankin’s cartography skills, but I’ve tried my best to update his race map, using similar colors and features, with the 2010 Census data. First, this map shows concentrations of black residents, who made up roughly half the city’s population in 2010, down 10 percentage points from the previous decade: 

This map shows where Hispanic residents are clustered: 

Here’s another version with all major race/ethnicity groups. The dots represent 25 residents per U.S. Census block: 

All the data used to make the maps can be download here

Mapping Mobility

By Matt Stiles | | Topics: Uncategorized

The U.S. Census Bureau today released a report on geographic mobility based on data from the American Community Survey: 

The comparison of data on state of residence in 2010 to data on state and region of birth reflects the cumulative effect of long-term patterns of migration. Fifty-nine percent of people in the United States were born in their state of residence. However, there is significant geographic variation.

Seventy percent of people in the Midwest, for example, live in the same state as their birth. While just under half the people in the West remained in their birth states. The West, by the way, has the highest proportion of foreign-born residents: 20 percent, according to the report.

Here’s a state-by-state map: 

Charting Marriage, Education

By Matt Stiles | | Topics: Uncategorized

Lately I’ve been experimenting with bubble charts in R based on Nathan Yau’s great tutorial. In this case, I wanted to see the relationship between higher education and marriage among women by state. 

Some states — such as Idaho, Utah and Wyoming — have both high marriage rates and low higher education rates. But that really says more abou those states than whether marriage and higher education correlate. Washington, D.C., for example, has the highest higher education rate and the lowest marriage rate. 

Still, it’s fun to see how states compare. View a larger version here

Data source: U.S. Census Bureau, American Community Survey

How The American Diet Has Changed Since 1980

By Matt Stiles | | Topics: Uncategorized

Thanks to the U.S. Census Bureau, I learned this week that Americans eat on average about 21 pounds of rice each year — and they wash it down with about 13 pounds of ice cream, apparently.

I wondered, what else do Americans eat, and how has that changed over time? Using the bureau’s “Per Capita Consumption of Major Food Commodities” report, I created this treemap, which visualizes hierarchical data structures that have categories and subcategories.

Red meat, for example, is a category of food that consists of beef, lamb and mutton, pork and veal. The same goes for sweeteners: sugar, corn sweeteners and high-fructose corn syrum. And so forth.

Thanks to Many Eyes, the treemap shows which categories of food are consumed at the highest volumes, and also the proportion of the various sub groups. It also shows how that consumption has changed over time.

This view shows category and food volumes by sizes and change with colors (orange represents growth; blue represent declines):

Right click on a category to zoom in and isolate it on the map. Doing so on sweeteners, for example, shows that we still consume lots of them (173 pounds a year on average), but that sugar consumption has declined by 22 percent since 1980. (That’s largely because it’s imported and expensive). We also see that high-fructose corn syrup consumption has increased 180 percent. (That’s largely because it is widely used as a sugar substitute in processed foods and soft drinks). It’s no wonder that products like the phenq diet pill are so popular in America. Hover over the foods to see values:

Go check out the interactive version, which is easier to understand. Experiment with views by switching the “Category” and “Commodity” tags at the top of the map. You can also change the years to examine change over shorter periods of time.

Download data |  Source: U.S. Census Bureau

Note: The treemap only includes data for food products measured in pounds, not gallons (milk) or pints (cream). 

Mapping American Poverty

By Matt Stiles | | Topics: Uncategorized

A national map prompted by today’s news about Americans in poverty: 

WASHINGTON — The portion of Americans living in poverty last year rose to the highest level since 1993, the Census Bureau reported Tuesday, fresh evidence that the sluggish economic recovery has done nothing for the country’s poorest citizens. 

View larger version

Source: American Community Survey | Previously: Children in Poverty