In South Korea, approximately 70.69 percent of the population was between 15 and 64 years old in 2023, while those above the age of 64 made up around 18.34 percent. The youngest generation made up an even smaller percentage than the elderly, but were the only group that did not increase in size over the last decade, partly due to a decrease in births since 2007. Reasons for fewer children While it is not always the case that family sizes shrink when there are less births per woman, the fertility rate in South Korea is undisputably decreasing overall and less children are born. The reasons people cite for having fewer children vary greatly by gender and marital status in South Korea: For example, more married people than singles - and of those more married women than men - say that the difficulty of maintaining a work life balance is the largest concern for them. Meanwhile, men express more economic concerns about child support, and notably more singles nowadays say they feel no need to have children.

In 2025, the total population of South Korea is projected to be around ***** million. In thirty years, the number of people aged 15 to 64 is estimated to decrease by one-third, while the number of older adults is anticipated to more than double. Additionally, the overall population is expected to decline by around *** million people by that time. Declining birth rate Several factors are contributing to the expected demographic changes in South Korea. Firstly, the birth rate has been declining for years. As of 2024, South Korea had the lowest fertility rate in the world. This trend continues despite the efforts of successive governments to encourage young people to have children. An increasing number of South Korean women are prioritizing their careers, often choosing to focus on work rather than starting a family at a young age. While the employment rate for South Korean women is still lower than that of men, it has steadily risen over the past decade. Increase in life expectancy Secondly, life expectancy in South Korea has steadily increased due to improved living standards and healthcare. The average life expectancy at birth for South Koreans has risen from less than 75 years to almost 83 years over the past twenty years. As a result, the proportion of people aged 65 and older has grown from less than ** percent to around ** percent in the last decade.

In 2024, the population of Gyeonggi Province in South Korea stood at around **** million. Seoul followed with about *** million inhabitants. The total population of South Korea stood at around **** million that year.

About this dataset

Context

This list ranks the 186 cities in the South Carolina by Korean population, as estimated by the United States Census Bureau. It also highlights population changes in each city over the past five years.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates, including:

• 2019-2023 American Community Survey 5-Year Estimates
• 2014-2018 American Community Survey 5-Year Estimates
• 2009-2013 American Community Survey 5-Year Estimates

Variables / Data Columns

• Rank by Korean Population: This column displays the rank of city in the South Carolina by their Korean population, using the most recent ACS data available.
• City: The City for which the rank is shown in the previous column.
• Korean Population: The Korean population of the city is shown in this column.
• % of Total City Population: This shows what percentage of the total city population identifies as Korean. Please note that the sum of all percentages may not equal one due to rounding of values.
• % of Total South Carolina Korean Population: This tells us how much of the entire South Carolina Korean population lives in that city. Please note that the sum of all percentages may not equal one due to rounding of values.
• 5 Year Rank Trend: This column displays the rank trend across the last 5 years.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

In 2024, Songpa-gu had the largest population among the 25 districts in Seoul, South Korea, with around ****** thousand inhabitants. That year, the total population of Seoul stood at about ***** million.

About this dataset

Context

This list ranks the 86 cities in the Los Angeles County, CA by Korean population, as estimated by the United States Census Bureau. It also highlights population changes in each city over the past five years.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates, including:

• 2019-2023 American Community Survey 5-Year Estimates
• 2014-2018 American Community Survey 5-Year Estimates
• 2009-2013 American Community Survey 5-Year Estimates

Variables / Data Columns

• Rank by Korean Population: This column displays the rank of city in the Los Angeles County, CA by their Korean population, using the most recent ACS data available.
• City: The City for which the rank is shown in the previous column.
• Korean Population: The Korean population of the city is shown in this column.
• % of Total City Population: This shows what percentage of the total city population identifies as Korean. Please note that the sum of all percentages may not equal one due to rounding of values.
• % of Total Los Angeles County Korean Population: This tells us how much of the entire Los Angeles County, CA Korean population lives in that city. Please note that the sum of all percentages may not equal one due to rounding of values.
• 5 Year Rank Trend: This column displays the rank trend across the last 5 years.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

About this dataset

Context

This list ranks the 5 cities in the Osage County, OK by Korean population, as estimated by the United States Census Bureau. It also highlights population changes in each city over the past five years.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates, including:

• 2019-2023 American Community Survey 5-Year Estimates
• 2014-2018 American Community Survey 5-Year Estimates
• 2009-2013 American Community Survey 5-Year Estimates

Variables / Data Columns

• Rank by Korean Population: This column displays the rank of city in the Osage County, OK by their Korean population, using the most recent ACS data available.
• City: The City for which the rank is shown in the previous column.
• Korean Population: The Korean population of the city is shown in this column.
• % of Total City Population: This shows what percentage of the total city population identifies as Korean. Please note that the sum of all percentages may not equal one due to rounding of values.
• % of Total Osage County Korean Population: This tells us how much of the entire Osage County, OK Korean population lives in that city. Please note that the sum of all percentages may not equal one due to rounding of values.
• 5 Year Rank Trend: This column displays the rank trend across the last 5 years.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

BackgroundCURB65 and CRB65 score are simple and popular methods to estimate the mortality in patients with community-acquired pneumonia (CAP). Although there has been a global increase in life expectancy and population ageing, we are still using the same age threshold derived from patients in late 1990s to calculate the scores. We sought to assess the implication of using higher age threshold using Korean population data and a single center hospital records.MethodsUsing Korean National Health Insurance Service-National Sample Cohort (NHIS-NSC), we analyzed annual age distribution of CAP patients in Korea from 2005 to 2013 and report how patients aged >65 years increased over time. We also assessed annual change in test characteristics of various age threshold in Korean CAP population. Using a single center hospital registry of CAP patients (2008–2017), we analyzed test characteristics of CURB65 and CRB65 scores with various age thresholds.Results116,481 CAP cases were identified from NHIS-NSC dataset. The proportion of patients aged >65 increased by 1.01% (95% CI, 0.70%-1.33%, P<0.001) every year. In the sample Korean population dataset, age threshold showed its peak AUROC (0.829) at 70. In the hospital dataset, 7,197 cases were included for analysis. The AUROC of both CRB65 and CURB65 was maximized at 71. When CRB71 was applied instead of CRB65 for hospital referral using score <1 to define a low-risk case, the potential hospital referral was significantly decreased (72.9% to 64.6%, P<0.001) without any significant increase in 1-month mortality in the low risk group (0.6% to 0.7%, P = 0.690).ConclusionThere was a significant age shift in CAP population in Korea. Increasing the current age threshold of CURB65 (or CRB65) could be a viable option to reduce ever-increasing hospital referrals and admissions of CAP patients.

About this dataset

Context

This list ranks the 6 cities in the Greenville County, SC by Korean population, as estimated by the United States Census Bureau. It also highlights population changes in each city over the past five years.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates, including:

• 2019-2023 American Community Survey 5-Year Estimates
• 2014-2018 American Community Survey 5-Year Estimates
• 2009-2013 American Community Survey 5-Year Estimates

Variables / Data Columns

• Rank by Korean Population: This column displays the rank of city in the Greenville County, SC by their Korean population, using the most recent ACS data available.
• City: The City for which the rank is shown in the previous column.
• Korean Population: The Korean population of the city is shown in this column.
• % of Total City Population: This shows what percentage of the total city population identifies as Korean. Please note that the sum of all percentages may not equal one due to rounding of values.
• % of Total Greenville County Korean Population: This tells us how much of the entire Greenville County, SC Korean population lives in that city. Please note that the sum of all percentages may not equal one due to rounding of values.
• 5 Year Rank Trend: This column displays the rank trend across the last 5 years.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

About this dataset

Context

This list ranks the 473 cities in the California by Korean population, as estimated by the United States Census Bureau. It also highlights population changes in each city over the past five years.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates, including:

• 2019-2023 American Community Survey 5-Year Estimates
• 2014-2018 American Community Survey 5-Year Estimates
• 2009-2013 American Community Survey 5-Year Estimates

Variables / Data Columns

• Rank by Korean Population: This column displays the rank of city in the California by their Korean population, using the most recent ACS data available.
• City: The City for which the rank is shown in the previous column.
• Korean Population: The Korean population of the city is shown in this column.
• % of Total City Population: This shows what percentage of the total city population identifies as Korean. Please note that the sum of all percentages may not equal one due to rounding of values.
• % of Total California Korean Population: This tells us how much of the entire California Korean population lives in that city. Please note that the sum of all percentages may not equal one due to rounding of values.
• 5 Year Rank Trend: This column displays the rank trend across the last 5 years.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

About this dataset

Context

This list ranks the 670 cities in the Ohio by Korean population, as estimated by the United States Census Bureau. It also highlights population changes in each city over the past five years.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates, including:

• 2019-2023 American Community Survey 5-Year Estimates
• 2014-2018 American Community Survey 5-Year Estimates
• 2009-2013 American Community Survey 5-Year Estimates

Variables / Data Columns

• Rank by Korean Population: This column displays the rank of city in the Ohio by their Korean population, using the most recent ACS data available.
• City: The City for which the rank is shown in the previous column.
• Korean Population: The Korean population of the city is shown in this column.
• % of Total City Population: This shows what percentage of the total city population identifies as Korean. Please note that the sum of all percentages may not equal one due to rounding of values.
• % of Total Ohio Korean Population: This tells us how much of the entire Ohio Korean population lives in that city. Please note that the sum of all percentages may not equal one due to rounding of values.
• 5 Year Rank Trend: This column displays the rank trend across the last 5 years.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

About this dataset

Context

This list ranks the 284 cities in the Tennessee by Korean population, as estimated by the United States Census Bureau. It also highlights population changes in each city over the past five years.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates, including:

• 2019-2023 American Community Survey 5-Year Estimates
• 2014-2018 American Community Survey 5-Year Estimates
• 2009-2013 American Community Survey 5-Year Estimates

Variables / Data Columns

• Rank by Korean Population: This column displays the rank of city in the Tennessee by their Korean population, using the most recent ACS data available.
• City: The City for which the rank is shown in the previous column.
• Korean Population: The Korean population of the city is shown in this column.
• % of Total City Population: This shows what percentage of the total city population identifies as Korean. Please note that the sum of all percentages may not equal one due to rounding of values.
• % of Total Tennessee Korean Population: This tells us how much of the entire Tennessee Korean population lives in that city. Please note that the sum of all percentages may not equal one due to rounding of values.
• 5 Year Rank Trend: This column displays the rank trend across the last 5 years.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Figure S1. A seasonal variation in sarcoidosis incidence rate from 2009 to 2015. Q1, the first quarter; Q2, the second quarter; Q3, the third quarter; Q4, the fourth quarter. Figure S2. Annual change in the proportion of incident cases with claims for bronchoscopy. (ZIP 82 kb)

In 2024, the largest age group in Seoul, South Korea's capital, was those aged 25 to 29, totaling approximately ******* individuals. Seoul is home to about ** percent of the total population

About this dataset

Context

This list ranks the 18 cities in the San Diego County, CA by Korean population, as estimated by the United States Census Bureau. It also highlights population changes in each city over the past five years.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates, including:

• 2019-2023 American Community Survey 5-Year Estimates
• 2014-2018 American Community Survey 5-Year Estimates
• 2009-2013 American Community Survey 5-Year Estimates

Variables / Data Columns

• Rank by Korean Population: This column displays the rank of city in the San Diego County, CA by their Korean population, using the most recent ACS data available.
• City: The City for which the rank is shown in the previous column.
• Korean Population: The Korean population of the city is shown in this column.
• % of Total City Population: This shows what percentage of the total city population identifies as Korean. Please note that the sum of all percentages may not equal one due to rounding of values.
• % of Total San Diego County Korean Population: This tells us how much of the entire San Diego County, CA Korean population lives in that city. Please note that the sum of all percentages may not equal one due to rounding of values.
• 5 Year Rank Trend: This column displays the rank trend across the last 5 years.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

About this dataset

Context

This list ranks the 34 cities in the Orange County, CA by Korean population, as estimated by the United States Census Bureau. It also highlights population changes in each city over the past five years.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates, including:

• 2019-2023 American Community Survey 5-Year Estimates
• 2014-2018 American Community Survey 5-Year Estimates
• 2009-2013 American Community Survey 5-Year Estimates

Variables / Data Columns

• Rank by Korean Population: This column displays the rank of city in the Orange County, CA by their Korean population, using the most recent ACS data available.
• City: The City for which the rank is shown in the previous column.
• Korean Population: The Korean population of the city is shown in this column.
• % of Total City Population: This shows what percentage of the total city population identifies as Korean. Please note that the sum of all percentages may not equal one due to rounding of values.
• % of Total Orange County Korean Population: This tells us how much of the entire Orange County, CA Korean population lives in that city. Please note that the sum of all percentages may not equal one due to rounding of values.
• 5 Year Rank Trend: This column displays the rank trend across the last 5 years.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

About this dataset

Context

This list ranks the 77 counties in the Oklahoma by Korean population, as estimated by the United States Census Bureau. It also highlights population changes in each county over the past five years.

Content

When available, the data consists of estimates from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates, including:

• 2019-2023 American Community Survey 5-Year Estimates
• 2014-2018 American Community Survey 5-Year Estimates
• 2009-2013 American Community Survey 5-Year Estimates

Variables / Data Columns

• Rank by Korean Population: This column displays the rank of county in the Oklahoma by their Korean population, using the most recent ACS data available.
• County: The County for which the rank is shown in the previous column.
• Korean Population: The Korean population of the county is shown in this column.
• % of Total County Population: This shows what percentage of the total county population identifies as Korean. Please note that the sum of all percentages may not equal one due to rounding of values.
• % of Total Oklahoma Korean Population: This tells us how much of the entire Oklahoma Korean population lives in that county. Please note that the sum of all percentages may not equal one due to rounding of values.
• 5 Year Rank Trend: This column displays the rank trend across the last 5 years.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

In 2024, the population aged 65 or older in South Korea made up approximately ** percent of the total population. The share of older people in the total population has almost tripled in the last two decades.

As of 2024, ** percent of TikTok users in South Korea were between 18 and 24 years old. The following age bracket of 25 to 34 years olds made up ** percent of users.

In 2022, around 53 percent of the population aged between 25 and 64 years old in South Korea completed tertiary education, while about 38.4 percent of the adult population completed upper secondary education. South Korea was above the OECD average for adult tertiary educational levels that year.