Census

Recent posts

Mapping 2012 Presidential Results in Majority Minority Counties

Yesterday I mapped the more than 350 “majority minority” counties in the United States, breaking them down by race and ethnicity groups and geography. As promised, today I’ve looked at how these counties (in the contiguous United States) voted in the 2012 election.

Obama won about 70 percent of these counties. Here’s the map:

The Daily Viz

The Daily Viz

That map, of course, can be misleading — as often happens in elections. That because the area of the counties can distort their actual voting power. In this case, Obama won more “majority minority” counties with urban populations and many more voters, such as Los Angeles (Calif.), Cook (Ill.) and Kings (N.Y.) counties, among others. Romney carried rural Republican counties, largely in Texas and the west.

Obama received nearly 18 million votes in the “majority minority” counties he carried. Romney got 2 million votes in his “majority minority” counties. In the end, Obama received a net 10 million votes from “minority majority” counties — nearly double his national margin over Romney in the country as a whole.

The map below uses proportional circles on top of the choropleth map above to help visualize the total votes in each county. You can see how Obama won in many of the most-populous counties, increasing his national margin (though not necessarily helping with the Electoral College — except in critical purple states he carried, such as Florida and Virginia).

The Daily Viz

The Daily Viz

You can download the data here.

For more updates, follow me on Twitter.

Mapping ‘Majority Minority’ Counties

This week the U.S. Census Bureau released updated national population estimates, including a list of the counties that grew most rapidly from 2010 to last summer. I wrote about these counties in a political context this week for work.

Included in the release was a note that six more counties had flipped to “majority minority,” as the bureau calls them. These are counties in which non-Hispanic whites represent less than half the population.

With those six, the country now has at least 352 counties — about one in 10 of the total — in this category. Here they are on a map:

The Daily Viz

The Daily Viz

These counties exist largely because because of the relative size of the Hispanic and black populations (though Hawaii and Alaska have high Asian population rates), depending on geography. Western counties have higher percentages of Hispanic residents, and counties in the Deep South have higher rates of black residents. Of course there are some exceptions sprinkled throughout the country.

This map shows the rate of “minority” residents by county:

The Daily Viz

The Daily Viz

This map shows the percentage of Hispanic residents by county:

The Daily Viz

The Daily Viz

This map shows the percentage of black residents by county:

The Daily Viz

The Daily Viz

You can download the data here. Tomorrow we’ll examine how these counties voted in the 2012 presidential election.

For more updates, follow me on Twitter.

Mapping ‘Rich Blocks, Poor Blocks’

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

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.

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

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

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

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

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