Demographics
Does a City’s Population Size Impact its Quality of Life?
Does a City’s Population Size Impact its Quality of Life?
City living isn’t everyone’s cup of tea—the world’s most populous cities especially can be hectic, noisy, and busy.
Yet, despite the chaos of urban life, cities offer inhabitants a number of comforts and conveniences that are harder to find in smaller towns. That’s why more people are moving into urban areas around the world.
But do these conveniences reflect in people’s quality of lives?
According to research compiled by Elaine Siu, bigger doesn’t always mean better—at least when it comes to population size. This interactive visualization takes a deep dive into this dataset.
Measuring Quality of Life
Siu uses data from Numbeo’s 2022 Quality of Life Index to compare the quality of life in nearly 200 different cities around the world. For the purposes of this research, Siu used cities with metropolitan area populations of over 500,000.
The index measures quality of life using eight different metrics:
- Cost of Living
- Purchasing Power
- Property Price to Income Ratio
- Pollution
- Traffic Commute Time
- Safety
- Healthcare
- Climate
A majority of the metrics (six of the eight) seemed to correlate with population size, suggesting that the bigger a city’s population is, the lower its quality of life in those metrics.
Here’s a look at the full list of cities included in the study, along with their overall quality of life scores and their metro area populations:
City | Quality of Life Index | Metro Area Population |
---|---|---|
Adelaide, Australia | 212.14 | 1,355,522 |
The Hague (Den Haag), Netherlands | 204.88 | 709,388 |
Perth, Australia | 198.37 | 2,092,649 |
Zurich, Switzerland | 198.14 | 1,419,621 |
Basel, Switzerland | 197.58 | 566,503 |
Brisbane, Australia | 196.06 | 2,472,222 |
Charlotte, NC, United States | 194.31 | 2,701,046 |
Seattle, WA, United States | 194.3 | 4,018,762 |
Oklahoma City, OK, United States | 192.79 | 1,441,647 |
Austin, TX, United States | 192.56 | 2,352,426 |
Geneva, Switzerland | 192.15 | 626,618 |
Quebec City, Canada | 192.11 | 837,814 |
Columbus, OH, United States | 191.34 | 2,151,017 |
San Diego, CA, United States | 188.18 | 3,286,069 |
San Antonio, TX, United States | 188.14 | 2,601,788 |
Copenhagen, Denmark | 187.89 | 1,370,131 |
San Jose, CA, United States | 187.16 | 1,952,185 |
Edinburgh, United Kingdom | 185.01 | 548,206 |
Sydney, Australia | 184.52 | 5,056,571 |
Melbourne, Australia | 183.06 | 5,150,766 |
Kansas City, MO, United States | 181.28 | 2,199,490 |
Albuquerque, NM, United States | 181.09 | 918,259 |
Helsinki, Finland | 180.21 | 1,327,762 |
Vienna, Austria | 180.01 | 1,960,023 |
Glasgow, United Kingdom | 179.79 | 1,688,907 |
Gothenburg, Sweden | 179.12 | 624,780 |
Dubai, United Arab Emirates | 178.96 | 2,964,382 |
Calgary, Canada | 178.34 | 1,611,475 |
Amsterdam, Netherlands | 178.17 | 1,165,898 |
Ottawa, Canada | 177.09 | 1,422,635 |
Portland, OR, United States | 176.92 | 2,511,612 |
Dallas, TX, United States | 175.71 | 7,759,615 |
Jacksonville, FL, United States | 175.25 | 1,637,666 |
Munich, Germany | 174.98 | 1,566,128 |
Boston, MA, United States | 174.52 | 4,899,932 |
Muscat, Oman | 174.07 | 1,622,620 |
Abu Dhabi, United Arab Emirates | 173.13 | 1,539,830 |
Frankfurt, Germany | 173.06 | 791,232 |
Vancouver, Canada | 172.66 | 2,631,690 |
Stuttgart, Germany | 172 | 634,740 |
Rotterdam, Netherlands | 171.72 | 1,014,675 |
Milwaukee, WI, United States | 171.44 | 1,566,487 |
Edmonton, Canada | 171.23 | 1,518,921 |
Indianapolis, IN, United States | 171.2 | 2,126,804 |
Houston, TX, United States | 170.9 | 7,206,841 |
Valencia, Spain | 170.88 | 836,857 |
Tucson, AZ, United States | 168.76 | 1,052,030 |
Denver, CO, United States | 167.36 | 2,972,566 |
Hamburg, Germany | 166.71 | 1,788,170 |
Vilnius, Lithuania | 165.74 | 540,775 |
Oslo, Norway | 164.94 | 1,071,062 |
Nashville, TN, United States | 164.87 | 2,012,476 |
Bristol, United Kingdom | 164.74 | 700,630 |
Atlanta, GA, United States | 163.99 | 6,144,050 |
Berlin, Germany | 163.74 | 3,570,750 |
Sacramento, CA, United States | 163.54 | 2,411,428 |
Washington, DC, United States | 162.88 | 6,356,434 |
Queretaro, Mexico | 162.06 | 1,389,302 |
Stockholm, Sweden | 161.54 | 1,679,050 |
Auckland, New Zealand | 161 | 1,652,341 |
Cologne, Germany | 160.82 | 1,136,992 |
Baltimore, MD, United States | 160.36 | 2,838,327 |
Tokyo, Japan | 160.27 | 37,274,000 |
Belfast, United Kingdom | 159.26 | 638,717 |
Prague, Czech Republic | 158.87 | 1,318,085 |
San Francisco, CA, United States | 157.57 | 4,623,264 |
Zagreb, Croatia | 157.5 | 684,254 |
Madrid, Spain | 157.33 | 6,713,557 |
Porto, Portugal | 157.26 | 1,320,347 |
Antwerp, Belgium | 155.3 | 1,052,622 |
Toronto, Canada | 155.02 | 6,312,974 |
Singapore, Singapore | 154.54 | 6,039,577 |
Philadelphia, PA, United States | 154.13 | 6,228,601 |
Montreal, Canada | 153.76 | 4,276,526 |
Doha, Qatar | 153.1 | 651,799 |
Phoenix, AZ, United States | 151.95 | 4,946,145 |
Riyadh, Saudi Arabia | 150.72 | 7,538,200 |
Lisbon, Portugal | 150.09 | 2,986,162 |
Birmingham, United Kingdom | 149.32 | 2,645,598 |
Manama, Bahrain | 148.96 | 688,558 |
Lyon, France | 148.34 | 1,747,575 |
Las Vegas, NV, United States | 148.17 | 2,292,476 |
Tel Aviv-Yafo, Israel | 147.84 | 4,343,584 |
Manchester, United Kingdom | 147.47 | 2,770,434 |
Riga, Latvia | 145.54 | 624,925 |
Bursa, Turkey | 145.27 | 2,054,748 |
Cape Town, South Africa | 145.05 | 4,800,954 |
Chicago, IL, United States | 144.81 | 9,509,934 |
Jeddah (Jiddah), Saudi Arabia | 144.4 | 4,780,740 |
Barcelona, Spain | 143.73 | 5,658,472 |
Brussels, Belgium | 143.12 | 2,109,631 |
Genoa, Italy | 142.82 | 675,464 |
Coimbatore, India | 142.77 | 2,934,621 |
Hamilton, Canada | 142.74 | 775,751 |
Bangalore, India | 141.67 | 13,193,035 |
Dublin, Ireland | 140.93 | 1,255,963 |
Curitiba, Brazil | 140.07 | 3,770,919 |
Los Angeles, CA, United States | 139.75 | 12,997,353 |
Nizhny Novgorod, Russia | 139.25 | 1,252,917 |
Durban, South Africa | 139.09 | 3,199,329 |
Islamabad, Pakistan | 139 | 1,198,035 |
Bologna, Italy | 139 | 811,707 |
Pune, India | 138.28 | 6,987,077 |
Taipei, Taiwan | 137.81 | 2,742,379 |
New York, NY, United States | 137.32 | 19,768,458 |
Brasilia, Brazil | 135.44 | 4,803,877 |
Winnipeg, Canada | 133.69 | 832,944 |
Pretoria, South Africa | 133.25 | 2,739,768 |
Warsaw, Poland | 133.21 | 1,794,532 |
Detroit, MI, United States | 133.05 | 4,365,205 |
Johannesburg, South Africa | 132.58 | 6,065,354 |
Izmir, Turkey | 131.52 | 3,056,149 |
Turin, Italy | 131.35 | 1,798,471 |
Lviv, Ukraine | 129.85 | 721,383 |
Poznan, Poland | 129.38 | 525,919 |
Wroclaw, Poland | 128.45 | 642,497 |
Guadalajara, Mexico | 128.14 | 5,339,583 |
Chiang Mai, Thailand | 127.81 | 1,197,931 |
Sharjah, United Arab Emirates | 127.77 | 1,785,684 |
Budapest, Hungary | 127.23 | 1,775,207 |
Ankara, Turkey | 126.93 | 5,309,690 |
London, United Kingdom | 126.14 | 9,540,576 |
Monterrey, Mexico | 125.76 | 5,036,535 |
Campinas, Brazil | 125.75 | 3,384,564 |
Seoul, South Korea | 125.66 | 9,975,709 |
Lodz, Poland | 124 | 666,032 |
Krakow (Cracow), Poland | 123.44 | 769,595 |
Paris, France | 123.02 | 11,142,303 |
Sofia, Bulgaria | 122.03 | 1,286,789 |
Medellin, Colombia | 121.78 | 4,067,758 |
Montevideo, Uruguay | 119.58 | 1,767,243 |
Yerevan, Armenia | 119.46 | 1,092,028 |
San Juan, Puerto Rico | 118.97 | 2,442,512 |
Florianopolis, Brazil | 118.92 | 1,277,547 |
Milan, Italy | 118.57 | 3,149,223 |
Kuala Lumpur, Malaysia | 117.7 | 8,419,566 |
Bucharest, Romania | 117.58 | 1,785,294 |
Kuwait City, Kuwait | 116.64 | 3,238,523 |
Athens, Greece | 115.69 | 3,153,781 |
Quito, Ecuador | 115.33 | 1,928,296 |
Thessaloniki, Greece | 115.32 | 813,793 |
San Jose, Costa Rica | 115.02 | 1,441,324 |
Chennai, India | 114.51 | 11,503,293 |
Amman, Jordan | 114.37 | 2,209,584 |
Ahmedabad, India | 113.04 | 8,450,228 |
Hyderabad, India | 112.53 | 10,534,418 |
Tbilisi, Georgia | 112.19 | 1,080,349 |
Panama City, Panama | 110.94 | 1,937,963 |
Rome, Italy | 109.98 | 4,297,877 |
Belgrade, Serbia | 109.82 | 1,405,192 |
Kharkiv, Ukraine | 109.51 | 1,423,343 |
Shenzhen, China | 109.11 | 12,831,330 |
Baku, Azerbaijan | 109.1 | 2,401,108 |
Moscow, Russia | 108.32 | 12,640,818 |
Minsk, Belarus | 107.79 | 2,048,574 |
Porto Alegre, Brazil | 107.74 | 4,185,488 |
Belo Horizonte, Brazil | 107.2 | 6,194,292 |
Kiev (Kyiv), Ukraine | 106.88 | 3,010,209 |
Odessa (Odesa), Ukraine | 106.41 | 1,007,989 |
Lahore, Pakistan | 106.01 | 13,541,764 |
Hong Kong, Hong Kong | 103.85 | 7,643,256 |
Santiago, Chile | 103.1 | 6,856,939 |
Skopje, North Macedonia | 101.02 | 605,996 |
Kolkata, India | 99.37 | 15,133,888 |
Buenos Aires, Argentina | 99.23 | 15,369,919 |
Saint Petersburg, Russia | 97.91 | 5,535,556 |
Dnipro, Ukraine | 97.76 | 946,574 |
Istanbul, Turkey | 96.13 | 15,636,243 |
Guatemala City, Guatemala | 95.46 | 3,036,405 |
Yekaterinburg, Russia | 94.29 | 1,521,136 |
Hanoi, Vietnam | 93.75 | 5,067,352 |
Mumbai, India | 89.39 | 20,961,472 |
Bogota, Colombia | 88.27 | 11,344,312 |
Tirana, Albania | 88.09 | 511,559 |
Mexico City, Mexico | 85.94 | 22,085,140 |
Almaty, Kazakhstan | 84.53 | 1,958,135 |
Recife, Brazil | 83.22 | 4,220,458 |
Nairobi, Kenya | 81.75 | 5,118,844 |
Novosibirsk, Russia | 81.71 | 1,686,236 |
Cairo, Egypt | 81.6 | 21,750,020 |
Karachi, Pakistan | 79.91 | 16,839,950 |
Bangkok, Thailand | 79.74 | 10,899,698 |
Sao Paulo, Brazil | 78.54 | 22,429,800 |
Kathmandu, Nepal | 78.08 | 1,521,057 |
Lima, Peru | 77.67 | 11,044,607 |
Delhi, India | 77.27 | 32,065,760 |
Shanghai, China | 76.62 | 28,516,904 |
Jakarta, Indonesia | 74.13 | 11,074,811 |
Rio de Janeiro, Brazil | 70.28 | 13,634,274 |
Caracas, Venezuela | 69.32 | 2,956,813 |
Colombo, Sri Lanka | 66.85 | 625,637 |
Beirut, Lebanon | 66.54 | 2,433,155 |
Ho Chi Minh City, Vietnam | 66.41 | 9,077,158 |
Beijing, China | 58.96 | 21,333,332 |
Tehran, Iran | 56.28 | 9,381,546 |
Dhaka, Bangladesh | 56.18 | 22,478,116 |
Lagos, Nigeria | 48.22 | 15,387,639 |
Manila, Philippines | 46.08 | 14,406,059 |
It’s worth noting that the negative correlation between the quality of life and population size only appeared in cities above the median population of 2.4 million people, indicating that the size of a city doesn’t appear to impact quality of life until a certain tipping point. Then, above the median, there’s a blatant downward trend.
However, Tokyo is an anomaly—its quality of life is much higher than it’s metropolitan population would predict.
Zooming in on Tokyo
Despite being the world’s largest urban area, Tokyo compares favorably compared to other top megacities across the index. When ranked among the top five megacities, it places in first for Purchasing Power, Safety, Traffic Commute Time, Cost of Living, Healthcare, and Pollution.
What’s so special about Tokyo? One major thing going for the Japanese city is its immaculate public transport system. The city’s transport is so efficient, the city’s rail service once issued a public apology after a train left the station 25 seconds earlier than its scheduled departure.
Another factor that makes Tokyo so livable is its relatively affordable housing, at least compared to other big cities like New York and Hong Kong. This is partly because of the city’s flexible land zoning system, which makes it relatively easy for developers to build housing and mix-use communities.
As our world becomes increasingly more urbanized, and cities around the world continue to increase in size, will they be able to emulate Tokyo’s growth? And if not, what other city design trends and innovations can cities utilize to raise quality of live?

This article was published as a part of Visual Capitalist's Creator Program, which features data-driven visuals from some of our favorite Creators around the world.
Economy
G7 vs. the World: GDP, Population, and Military Strength
We visualize the G7’s global influence in 2025, across global GDP, population, and military spending data.

G7 vs. the World: GDP, Population, and Military Strength
This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.
Key Takeaways
- G7 countries represent 28.4% of global GDP (PPP) today, down from about 50% in the 1980s
- The G7 accounts for only 9.6% of the world’s population and nearly half (49.3%) of military spending
- The G7 punches above its weight in terms of military spending, thanks to the U.S.
The G7—comprising the United States, Japan, Germany, France, the UK, Italy, and Canada—wields considerable global influence, despite its declining share of the global economy and population.
In this infographic, we visualize the G7’s global influence in 2025 based on global GDP, population, and military spending data.
Data & Discussion
The data for this visualization was sourced from the UN World Population Prospects 2024, the IMF, and Our World in Data.
Country | GDP (PPP) (%) | Population (%) | Military Spending (%) |
---|---|---|---|
🇺🇸 United States | 14.7 | 4.2 | 36.2 |
🇯🇵 Japan | 3.3 | 1.5 | 2.2 |
🇩🇪 Germany | 3 | 1 | 3.2 |
🇫🇷 France | 2.2 | 0.8 | 2.4 |
🇬🇧 United Kingdom | 2.2 | 0.8 | 2.9 |
🇮🇹 Italy | 1.8 | 0.7 | 1.4 |
🇨🇦 Canada | 1.3 | 0.5 | 1.1 |
G7 Total | 28.4 | 9.6 | 49.3 |
Rest of World | 71.6 | 90.4 | 50.7 |
📉 The G7’s Shrinking Economic Might
The G7’s share of global GDP (PPP) in 2025 is projected at 28.4%, which is a sharp drop from its pre-2000s value.
GDP at Purchasing Power Parity (PPP) measures the value of goods and services produced in a country, adjusted for differences in cost of living and inflation.
The G7’s decline reflects shifts in global economic power towards Asia and other developing regions. The group’s largest economy is the U.S., which accounts for more than the rest of the group combined (14.7% vs 13.8%).
🌍 Modest Population Representation
Despite its 28.4% share of the world economy, the G7 represents only 9.6% of the population, at around 783 million people. Advanced economies like those in the G7 have low fertility rates and aging populations, meaning their share of global population will continue to fall.
Interestingly, these demographic challenges are now affecting China as well, whose population peaked in 2021 and is beginning a long-term decline.
🛡️ Concentrated Military Spending
Where the G7 has the most global influence is in defense, with G7 countries collectively accounting for 49.3% of global military spending ($1.3 trillion).
The U.S. alone makes up 36.2% , dwarfing the next top countries as we’ve shown in this recent graphic. Together, G7 nations play a central role in NATO, global arms exports, and military alliances shaping international security.
Learn More on the Voronoi App 
If you enjoyed today’s post, check out How G7 Countries Compare to America’s Poorest States on Voronoi, the new app from Visual Capitalist.
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