Tag Archives: US

US Hispanic Population

Posted on by under Demography

Latino percent 1940.png

The map on the left displays the Hispanic percentage for each US state in 1940. Contrast that with the map on the right displaying the Hispanic percentage for each US state in 2010. The Hispanic population in 1940 was mostly concentrated in the southwest border states of Arizona, New Mexico, and Texas, but over the next 70 years, migration and birth rates spread the population throughout the entire southwest, west coast, and major cities on the east coast. New Mexico continues to be the US state with the highest concentration of Hispanic population with 41% in 1940 to 46% in 2010. Nationwide the Hispanic population has increased dramatically over the past 70 years – from around 1.4% in 1940 to 16.3% in 2010!

US African American Percentage

Posted on by under Demography

Black percent 1940.png

The map on the left displays the African American percentage for each US state in 1910. Contrast that with the map on the right displaying the African American percentage for each US state in 2010. The African American population in 1910 was very concentrated in the southeast, but over the next 100 years migration spread up the east coast and into the midwest – this distributing the population more evenly in the eastern half of the US. It is interesting to note that every state in the western US (was in 1910 and remains to be in 2010) below the national average in African American population. Mississippi continues to be the US state with the highest concentration of American Americans but has decreased from 56% in 1910 to 37% in 2010. Nationwide the African American population has remained stable over the past 100 years -from around 10.7% in 1910 to 12.6% in 2010.

Coastal Population

Posted on by under Demography

Equal population.png

Above is a map comparing the population all of the United States coastal counties (counties boarding the Atlantic or Pacific Oceans) to the same population of counties from mid-point of the US spreading out. The map above has equal population – 104 million to 104 million. The area (in square miles) of the middle counties is 6.5 times the area of the coastal counties.

Trumpland and Clinton Islands

Posted on by under Demography, Politics

Clinton islands.png

It’s informative to display how small of the country, by area, Hilary Clinton won in the 2016 Presidental Election. Above is a map of the regions of the country Hilary won (Clinton Islands) and below is the area of the country Trump won (Trumpland). Given the area difference alone, it appears that Trump won in a landslide, however, in fact, he lost the popular vote by more than 2% to Clinton! This is due to the large differences in population density each candidate won – put simply, Clinton won in the cities and Trump won in the rural areas. The highest percentage Trump supporting region was the central plans while the largest Clinton supporting regions were the San Francisco Bay Area and eastern seaboard running from Washington DC to Boston.

Trumpland.png

US Income Inequality 1970-2010

Posted on by under Demography, Economics

Screen Shot 2016-12-01 at 4.35.57 PM.png

There is increased attention focused on US income inequality in recent years. It remains a challenge to isolate different contributing factors for this inequality growth over the past generation although some reasons have been cited, such as: increased trade with developing countries, increased income for those with university degrees (only around 30% of the US population), increased role of technology in the economy, etc. This post will not dive into trying to uncover why income inequality is happening, but rather, how the various income groups have been affected since 1970.

Above is a chart displaying the US population grouped into five income brackets. What is clear from the data is for the bottom 80% of US income earners, all groups are receiving a smaller share of total US income than compared to 1970 and 1990. Meanwhile, across this same period, the highest fifth of income-earners in the US have received an increasing share of income compensation – from 43.3% in 1970 to 46.6% in 1990 to 50.3 percent in 2010.

Although, to play devil’s advocate, what makes this issue even more complicated is that individuals are not in the same group over time, it is hard to factor in changes in the quality of goods, or even, the modern luxuries of goods that didn’t even exist 40 years ago such as the internet, smart phones, laptop computers, etc. Even though the percentage of income the bottom 80% of income earners is responsible for has decreased over the period, it’s clear that they are living better lives considering all the improvements in technology, safety, and healthcare.

US Income Distribution 2015

Posted on by under Demography, Economics

Screen Shot 2016-12-09 at 10.25.56 PM.png

Income data from the 2015 US census reveals some insight. 39% of all households had two or more income earners resulting in 25% of households having a combined income above $100k. Meanwhile, only 9% of US workers (population age 15 or older) have individual incomes over $100k. These high earners are typically associated with high education levels as half of all people with graduate degrees are also among the top 15% of income earners (individual incomes greater than $75k).

In 2015, US median personal income was $30k and the mean personal income was $44k. For the US population aged 15 and above, 43% make less than $25k, 70% make less than $50k, 84% make less than $75k, and 91% make less than $100k. Similar data is displayed in the bar chart above – one chart shows the distribution for ages 25 through 64 and the other for ages 25 and above.

Who Moves? Who Stays?

Posted on by under Demography

Screen Shot 2016-12-15 at 10.52.43 PM.png

Recent data from the Pew Research Center gives insight into the demographic profile of US citizens and their moving behavior relative to age, location, and education level. Some highlights: 37% of people have never lived outside their hometowns, 57% of adults have never lived outside their home state, and on the opposite side of the spectrum, only 15% of people have lived in four or more states. The effect of college is a significant difference between ‘movers’ and ‘stayers’ – 77% of college graduates have changed communities at least once compared to only 56% for high school graduates.

The above graph shows the age profile for movers. Most movers are between the age of 18 and 35. There is an initial peak at 18 years old as a large portion of people leave high school for college and there is an even higher peak for movement post college graduation. The most likely age someone will move is around 24 years old – about 37% of people change locations at this age. The graph below shows the net regional US migration patterns in 2007. The South and West are making the largest population gains at the expense of the Northeast and Midwest.

Screen Shot 2016-12-15 at 10.55.40 PM.png

Congress and President

Posted on by under Demography, Politics

Congress and President.png

Not only did Donald Trump win the 2016 presidential election, but both the House of Representative and the Senate are majority controlled by the Republican party. Above is a chart displaying which party has controlled congress and the presidency running back through 1855. The Senate is the top chart, the House is the bottom chart, and presidential party in office is the middle color strip between the two. The color indicates which party controlled each branch of congress and the height of the bars in each chart indicate what percentage the controlling party had in those years. Since the great depression, congress has been mostly controlled by the Democrats – having the majority of seats in both the Senate and House for 62 years out of the 84. Since the 1990’s, control in congress has narrowed between the two parties and control as flipped back-and-forth more often than in the previous periods. The 2017 version will feature Republican control in all three for the first time since President Bush II in 2008.

Voter Demographics 2016

Posted on by under Demography, Politics

Screen Shot 2016-11-19 at 9.43.36 PM.png

Above is a graphic displaying the Republican share of the two-party votes relative to square miles per voter (i.e. population density). As expected, Democrats won a larger fraction of urban areas, on average, while Republicans won more rural areas. Democrats also won a larger share of college graduates, all be it a slim margin 49% to 45%, but won by a substantial margin in both non-white college graduates and the non-white non-college graduate population – 71% and 75% respectively.

Below is a graphic displaying the percentage change in voting behavior for various demographic groups compared to the 2012 election. Trump won a larger percentage of votes in all categories (including Male, White, Black, Hispanic, and Asian) except for Women voters who voted by a 1% larger margin for Hillary than for Obama in 2012.

Screen Shot 2016-11-19 at 9.42.05 PM.png

Electoral College Vs. US Population

Posted on by under Demography, Politics

EC vs Pop map.png

Hilary Clinton won the popular election 47.7% to 47.4% despite losing the electoral college by a wide margin to Donald Trump. This is only the second time since 1888 that a candidate has won the popular vote, but not the election. This situation has lead some to question if the electoral college system is really the best way to select a president. Liberals claim that it is not fair as large, densely populated states have proportionally less say then less populated rural states that have a minimum 3 electoral votes regardless of population. This claim was interesting, so I decided to investigate further.

Above is a map displaying the relative difference among the states regarding their ‘over representation’ or ‘under representation’ given population. Orange colored bubbles mean the state has a higher fraction of US population than the fraction of electoral college votes. For example, California has 12.2% of US population, yet only 10.2% of electoral college votes. This is also the case for Texas (8.5% of population verse 7% of electoral college) and likewise for all other orange colored states. The size of the bubble signals a larger margin of under representation.

On the other end of the spectrum, the green colored bubbles mean the state has a higher fraction of electoral college votes compared to their fraction of US population. For example, Wyoming has 0.18% of US population yet has 0.56% of the electoral college – that is, 3 votes out of 538. Again the larger the green bubble signals a wider margin between electoral college votes compared to relative population.

The smaller the bubbles, whether green or orange, means that state was very close to proportional representation between the electoral college and population. For example, Washington state had 2.2% of US population and 2.2% of electoral college votes.

Comparing how the 18 most over represented states voted results in 9 Republican and 9 Democratic states. That is, for every rural over represented Republican state like Wyoming, Alaska, and North Dakota – there are an equal number of small over represented Democratic states like Vermont, Washington DC, and Delaware. To claim the election was lost due to under populated Republican states is inaccurate. The election was won in the battle ground, medium sized swing states of Ohio, Michigan, Wisconsin, and Pennsylvania – all of whom voted Republican this year instead of Democratic was they did in 2012 and 2008.

Screen Shot 2016-11-13 at 5.27.51 PM.png

Above is a table of the 18 most over represented states by electoral college votes. The ‘Elect Diff’ column is the difference between the electoral college percentage minus the US population percent the state has. The ‘Demo16’ column is the Democratic vote percentage, ‘Rep16’ is the Republican vote percentage, ‘Other16’ is the sum of third party vote percentage, and ‘D-R Spread’ is the Democratic vote percentage minus the Republican vote percentage.