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Growth and Decline: Visualizing U.S. Population Change by County

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Growth and Decline: Visualizing U.S. Population Change by County

Visualizing U.S. Population Change by County (2010-2018)

The American Heartland continues to feed the growth of urban centers — not only with its agricultural products and natural resources, but with its people as well.

Across the nation, coastal urban centers are adding new citizens, while rural counties are seeing their populations decline. Outside of this general trend, fracking has created some rare pockets of growth in rural areas, while coal mine closures have had the opposite effect.

Today’s map comes to us from Reddit user jinkinson, and it maps U.S. population change by county from 2010 to 2018, using data from the U.S. Census Bureau.

Uneven Growth

From 2010 to 2018, the total United States population increased by 6% from 308,745,538 to 327,167,434. However, it’s clear that not all counties participated in this uptrend.

There are 3,142 counties counted as part of this map (Puerto Rico and U.S. territories excluded). Of these, 1,489 experienced positive growth, while 1,653 saw a decline.

Which Counties are Growing the Fastest?

America’s economy has grown for over a decade, but that growth increasingly concentrates in 1% of the nation’s counties.

In fact, just 31 counties were responsible for 32.3% of the U.S. gross domestic product (GDP) in 2018, according to data from the Bureau of Economic Analysis.

Although economic concentration tells part of the story, a view of changing population patterns can help us see where physical growth is happening across the country.

Top 20 Counties for U.S. Population Growth

RankStateCounty Name2010 Population2018 Population% Change
#1North DakotaMcKenzie County6,36013,632114%
#2TexasLoving County8215285%
#3North DakotaWilliams County22,39835,35058%
#4TexasHays County157,107222,63142%
#5UtahWasatch County23,53033,24041%
#6TennesseeTrousdale County7,87011,01240%
#7TexasHudspeth County3,4764,79538%
#8FloridaSumter County93,420128,75438%
#9FloridaOsceola County268,685367,99037%
#10TexasComal County108,472148,37337%
#11TexasKendall County33,41045,64137%
#12IowaDallas County66,13590,18036%
#13GeorgiaForsyth County175,511236,61235%
#14TexasFort Bend County585,375787,85834%
#15TexasWilliamson County422,679566,71934%
#16FloridaSt. Johns County190,039254,26134%
#17North DakotaMountrail County7,67310,21833%
#18GeorgiaLong County14,46418,99831%
#19South DakotaLincoln County44,82858,80731%
#2VirginiaLoudoun County312,311406,85030%

At the top of the list is McKenzie County, North Dakota, which experienced a growth of 114% in its population from 2010 to 2018. This is due to the shale gas industry that flourished in the area. Interestingly, all of North Dakota’s active oil and gas rigs are in just four counties: McKenzie, Dunn, Williams, and Mountrail, three of which make the top 20 list above.

The fracking boom also fueled growth in Texas, where six counties made the list.

However, immediate economic success built on fracking sands and sensitive commodity prices may not be sustainable over the longer term. In fact, counties from a previous energy era are already seeing what happens when demand dries up.

Which Counties are Declining the Fastest?

If you look at a map of coal operations in the U.S. and compare it to the list of declining counties below, a stark pattern appears.

Half of country’s coal miners work in just 25 counties, and as mines close there are fewer economic opportunities available in those areas.

Top 20 Counties for U.S. Population Decline

RankStateCounty Name2010 Population2018 Population% Change
#1IllinoisAlexander County8,2386,060-26%
#2OklahomaBlaine County11,9439,485-21%
#3West VirginiaMcDowell County22,11318,223-18%
#4KansasMorton County3,2332,667-18%
#5ArkansasPhillips County21,75718,029-17%
#6TexasTerrell County984823-16%
#7TexasSchleicher County3,4612,895-16%
#8AlaskaPetersburg Borough3,8153,221-16%
#9ArkansasMonroe County8,1496,900-15%
#10LouisianaTensas Parish5,2524,462-15%
#11South CarolinaAllendale County10,4198,903-15%
#12MichiganOntonagon County6,780,5,795-15%
#13MississippiQuitman County8,2237,051-14%
#14AlabamaMacon County21,45218,439-14%
#15ArkansasLee County10,4248,985-14%
#16AlabamaPerry County10,5919,140-14%
#17VirginiaEmporia city5,9275,121-14%
#18MississippiCoahoma County26,15122,628-13%
#19ColoradoKit Carson County8,2707,163-13%
#20TexasMitchell County9,4038,145-13%

While coal counties have grim figures due to the changing domestic energy story, it’s Alexander County in Illinois that tops the list with a 26% decline in population over the time period.

In fact, the harsh reality is that 93% of Illinois’ counties have seen a decrease in population between 2010-2018.

State by State: Winners and Losers

The number of declining counties within a state reveals a larger picture. Visual Capitalist aggregated county level data to reveal the patterns of U.S. states.

State# Counties with Negative Growth# Counties with Positive Growth% of Counties with Negative Growth
Illinois93991%
Connecticut7188%
Kansas901586%
West Virginia46984%
Mississippi622076%
New York461674%
Nebraska662771%
Pennsylvania472070%
New Mexico231070%
Missouri793669%
Iowa683169%
Ohio583066%
Alabama432464%
Indiana593364%
Arkansas482764%
Michigan533064%
Louisiana392561%
Oklahoma443357%
Vermont8657%
Maine7654%
Kentucky635753%
Wyoming121152%
North Dakota272651%
Minnesota444351%
Rhode Island4450%
New Jersey101148%
Wisconsin343847%
Georgia738646%
South Carolina212546%
Virginia607345%
North Carolina435743%
South Dakota264039%
Alaska111838%
Texas9615838%
Nevada61135%
Tennessee326334%
Montana183832%
New Hampshire3730%
Maryland71729%
California154326%
Colorado164825%
Utah72224%
Florida155222%
Massachusetts31121%
Idaho93520%
Hawaii1420%
Oregon72919%
Arizona21313%
Washington2375%
Delaware030%
District of Columbia010%

Illinois tops the list with the most people leaving its counties, while areas such as the District of Columbia and Delaware experienced no declines.

What happens to a state where the majority of its counties are losing residents?

The Big Picture

Americans are seeking out opportunity where it resides: in the cities. The pursuit of fracking oil and gas created opportunities in regions beyond the coast or traditional urban centers.

However, the long term trend of concentration of people on coasts and in major urban centers will continue to impact infrastructure spending, labor mobility, and economic activity. America no longer derives the majority of its economic success from rural counties and industries.

It is unclear how rural counties will fare as their denizens continue to dwindle. What is clear is that the few that rely on natural resources for success will continue to experience the ups and downs of volatile commodity markets.

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Business

Flying High: The Top Ten Airline Routes by Revenue

This visualization tracks the high-value routes that generate the most revenue for airlines – primarily links between the world’s financial centers

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Flying High: The Top 10 Airline Routes by Revenue

The airline industry is a tough business. Profit margins are narrow, airplanes are expensive to run and maintain, and government regulation and taxation can be onerous and unpredictable.

In addition, demand can stall by the outbreak of disease, recession, war, or terrorism. So when a company has a winning airline route, it makes all the difference to a company’s bottom line.

Today’s visualization uses data from OAG Aviation Worldwide, which tracked the airline routes that generated the most revenue from April 2018 to March 2019.

Top 10 Highest Revenue Routes by Airline

North American routes dominate the global rankings. However, it is the connections from the U.S Northeast and Europe that generate the most revenue and often the most delays.

Only one route breaks the billion dollar barrier: British Airways’ service between London Heathrow Airport (LHR) and New York’s John F. Kennedy Airport (JFK).

AirlineAirport PairCountriesTotal Revenue US$ 2018/19
British AirwaysJFK-LHR🇺🇸🇬🇧$1,159,126,794
Qantas AirlinesMEL-SYD🇦🇺$849,260,322
EmiratesLHR-DXB🇬🇧🇦🇪$796,201,645
Singapore AirlinesLHR-SIN🇬🇧🇸🇬$735,597,614
United AirlinesSFO-EWR🇺🇸$689,371,368
American AirlinesLAX-JFK🇺🇸$661,739,368
Qatar AirwaysLHR-DOH🇬🇧🇶🇦$639,122,609
Cathay Pacific AirwaysHKG-LHR🇭🇰🇬🇧$604,595,063
Singapore AirlinesSYD-SIN🇦🇺🇸🇬$549,711,946
Air CanadaYVR-YYZ🇨🇦$541,122,509

Air Canada’s route between Vancouver and Toronto bottoms out the list with $541 million of revenue in 2019. Low population density, high infrastructure costs, and an aviation industry that is essentially an oligopoly, are all factors driving up ticket costs in Canada.

North America, Top 10 Highest Revenue Routes by Airline

Here’s a look at only the top-grossing routes connected to North America, including the prior ones that made the global list.

AirlineAirport PairCountriesTotal Revenue US$ 2018/19
British AirwaysJFK-LHR🇺🇸🇬🇧$1,159,126,794
United AirlinesSFO-EWR🇺🇸$689,371,368
American AirlinesLAX-JFK🇺🇸$661,739,788
Air CanadaYVR-YYZ🇨🇦$541,122,509
British AirwaysBOS-LHR🇺🇸🇬🇧$523,527,241
Air FranceJFK-CDG🇺🇸🇫🇷$486,378,698
United AirlinesLAX-EWR🇺🇸$479,908,312
Cathay Pacific AirwaysJFK-HKG🇺🇸🇭🇰$475,514,451
Delta Air LinesLAX-JFK🇺🇸$465,130,366
British AirwaysLAX-LHR🇺🇸🇬🇧$452,136,502

Transcontinental routes dominate the domestic market with LAX–JFK appearing twice in the ranking for both American and Delta Air Lines.

Asia, Top 10 Highest Revenue Routes by Airline

Despite Asia’s rise as an economic superpower, there are no routes that break the billion dollar barrier. Singapore Airlines’ Singapore (SIN) to London’s Heathrow (LHR) tops the list, generating $736 million in 2019.

AirlineAirport PairCountriesTotal Revenue US$ 2018/19
Singapore AirlinesSIN-LHR🇸🇬🇬🇧$735,597,614
Cathay Pacific AirlinesHKG-LHR🇭🇰🇬🇧$604,595,063
Singapore AirlinesSIN-SYD🇸🇬🇦🇺$549,711,946
Vietnam AirlinesSGN-HAN🇻🇳$488,487,259
Cathay Pacific AirlinesHKG-JFK🇭🇰🇺🇸$475,514,451
Japan AirlinesOKA-HND🇯🇵$447,224,346
Singapore AirlinesCGK-SIN🇮🇩🇸🇬$436,905,694
Japan AirlinesFUK-HND🇯🇵$431,457,469
Singapore AirlinesSIN-MEL🇸🇬🇦🇺$414,276,407
Cathay Pacific AirlinesHKG-SIN🇭🇰🇸🇬$389,910,239

The routes that dominate Asia connect the financial hubs of London, New York, Singapore, and Hong Kong. There are also two domestic routes in Japan, connecting both Fukuoka (FUK) and Okinawa (OKA) to Tokyo’s Haneda (HND) airport.

Africa, Top 10 Highest Revenue Routes by Airline

At the top of the ranking in Africa is Johannesburg (JNB) to Dubai International Airport (DXB) with revenues of $315 million. Dubai has become an important hub for high value flights arriving and departing Africa, a position that may prove profitable as air traffic on the continent increases in coming years.

AirlineAirport PairCountriesTotal Revenue US$ 2018/19
EmiratesJNB-DXB🇿🇦🇦🇪$315,678,326
British AirwaysJNB-LHR🇿🇦🇬🇧$295,167,492
Saudi Arabian AirlinesCAI-JED🇪🇬🇸🇦$242,155,949
TAAG Angola AirlinesLAD-LIS🇦🇴🇵🇹$231,155,949
South African AirlinesJNB-CPT🇿🇦$184,944,128
EmiratesCAI-DXB🇪🇬🇦🇪$181,392,011
EmiratesCPT-DXB🇿🇦🇦🇪$176,743,498
Air FranceABJ-CDG🇨🇮🇫🇷$174,986,272
British AirwaysCPT-LHR🇿🇦🇬🇧$174,605,201
EmiratesMRU-DXB🇲🇺🇦🇪$163,952,609

Despite the smaller earnings compared to larger markets, some airline companies see the potential for growth in Africa. Virgin Atlantic will fly a route between London’s Heathrow and Cape Town in South Africa, while Qatar Airlines acquired a stake in RwandAir.

Financial Hubs

The cities that appear in the top revenue ranking are revealing. Since business and first class travelers are such an important revenue driver, it makes sense that connections between the world’s financial hubs are delivering big value to airlines.

As Asian and African economies continue to evolve, what route could be the next billion dollar route for airlines?

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China

Meet China’s 113 Cities With More Than One Million People

China has the same amount of 1 million+ population cities as both North America and the EU combined. Here they all are, from biggest to smallest.

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In 2010, China’s urban-dwelling population surpassed its rural population, marking a monumental demographic milestone in the country’s history.

Just three decades prior, China looked markedly different. Only 20% of Chinese citizens lived in urban areas, and many of today’s metropolises were still small villages.

Since then, huge swaths of the population have moved from farmland into cities, a shift that is still causing many urban areas to swell in size. Case in point is the growth of Guangzhou, which lays just north of Hong Kong. From 1980 to today, more than 18 million people moved into the city. A 40-year-old born in Guangzhou will have seen their small, regional city mushroom into one of the largest urban amalgamations on Earth.

Of course, this is just one example of a process that has been altering the landscape of cities from the coast of the South China Sea out to the Eurasian Steppe.

The One Million+ Club

According to Demographia’s World Urban Areas report, there are now 113 urban areas in China that surpass the one million population threshold. In comparison, North America and the EU combined have 114 urban areas that surpass one million people.

Below is a full breakdown of China’s one million+ club:

Meet China’s 113 Cities With More Than One Million People

Unparalleled Urbanization

The massive scale of rural-to-urban migration isn’t just a major development within China, it has no parallel in modern history.

Since 1980, over half a billion people have moved from the countryside to an urban center. The construction of these new cities took a staggering amount of raw materials. Few data points highlight the scale of construction better than China’s cement production in recent years.

china cement production

In 2018, Chinese construction used about 8x the amount of second place India, which has a similar population size.

Megacities on Megacities

Cities with over 10 million inhabitants are defined as megacities. China is already home to six megacities, with another three urban areas well on the way to achieving that status.

In fact, some megacities within close proximity have grown so large that they are merging into contiguous urban areas. The most prominent example of this phenomenon is in the Pearl River Delta region of China.

The Pearl River Delta region is not only home to the megacities of Guangzhou and Shenzhen, but also a number of other sizable cities that are quickly merging into a unified continuous entity containing up to 50 million people. Demographia still considers most of these cities to be separate labor markets ⁠— but as more connections form across the region, the Pearl River Delta could be poised to become the largest unified urban area in human history.

Westward Migration

As megacities like Shanghai and Shenzhen have grown and developed, they’ve also become more expensive places to live and do business. The economic evolution of these cities has created opportunity for smaller, less developed cities to woo both residents and businesses.

This natural reshuffling has led to impressive growth in cities further inland like Zhengzhou, which sits 350 miles (630 kms) east of the coastline where many of the country’s largest cities reside.

Using the “build it and they will come” approach, the city converted a 160 square mile (410 sq km) patch of empty land into the Zhengzhou Airport Economy Zone (ZAEZ). The project has proven wildly successful, and the city even has the nickname “Apple City” thanks to the presence of Foxconn (which produces the iPhone) and a cluster of other smartphone manufacturers.

This airport-centered zone was developed with the full political and economic backing of Beijing as part of a broader effort to increase economic activity in China’s interior cities. Zhengzhou has nearly tripled in size over the last decade, a powerful testament to the shift in economic momentum.

China’s Inland All-Stars:

Urban AreaPopulation 2010Population 2019Change (2010-19)
Chengdu4.8M12.1M+152%
Xi'an4.0M7.1M+77%
Wuhan5.2M8.5M+63%
Chongqing5.4M8.3M+53%

Compare the numbers above to fast-growing cities in the U.S., such as Las Vegas or Phoenix, which managed 33% and 12% growth respectively over the last decade.

If this trend continues, China’s one million+ club will most likely expand once fresh census data is released in 2021.

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