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Which US state has the most centenarians?

5 min read

While highly populous states like California consistently report the largest raw number of centenarians, recent Census data shows that the state with the highest proportion of centenarians per 10,000 residents is Hawaii. This crucial distinction explains why different states lead depending on whether total count or per-capita rate is being measured.

Quick Summary

California has the largest overall number of centenarians, while Hawaii has the highest proportion relative to its population. Factors like population size, migration trends, and life expectancy influence these rankings. Other states in the Midwest and Northeast also feature prominently for their per-capita rates of residents aged 100 and older.

Key Points

  • California has the highest total number: As the most populous state, California has the largest raw count of centenarians.

  • Hawaii leads in per-capita rate: When measuring centenarians per 10,000 residents, Hawaii consistently ranks highest.

  • Total count versus per-capita: The distinction between total number and proportion is critical for accurate demographic analysis.

  • Centenarian population is growing: The U.S. centenarian population increased by 50% between 2010 and 2020 and is projected to quadruple by 2054.

  • Regional variations exist: The Northeast and Midwest regions tend to have a higher proportion of older residents and centenarians.

  • Females outnumber males significantly: Women constitute 78% of the centenarian population, far outnumbering their male counterparts.

  • Factors include life expectancy and migration: Favorable life expectancy, lifestyle, diet, and the migration of retirees influence state-by-state centenarian demographics.

In This Article

California leads in total number of centenarians

When considering the raw, total count, California is the US state with the most centenarians. This is a logical outcome, as it is also the most populous state in the country. A larger overall population naturally leads to a larger number of individuals in every age bracket, including those who have lived to 100 or older. According to a recent U.S. Census report, California had the highest number of centenarians nationwide, followed by New York, Florida, and Texas. This demonstrates how the sheer size of a state's population is the most significant factor when examining absolute numbers.

Hawaii has the highest proportion per capita

While California has the most centenarians in total, the answer changes completely when looking at the concentration relative to the overall population. The most recent Census data indicates that Hawaii had the highest proportion of centenarians per 10,000 residents. This metric offers a more balanced view of longevity, accounting for varying state populations. In 2020, Hawaii reported 4.44 centenarians for every 10,000 people, the highest rate in the nation. This is attributed to several potential factors, including higher life expectancy in the state, lifestyle, diet, and strong social cohesion.

Geographic and demographic trends among centenarians

In addition to California and Hawaii, other states show interesting trends in centenarian populations. States in the Northeast and Midwest tend to have a higher proportion of older residents compared to the national average, a pattern that extends to centenarians as well. Regions with high rates often have populations that have aged in place, whereas states with lower rates sometimes have younger populations due to factors like high birth rates or an influx of younger workers. For example, Utah and Alaska consistently report lower per-capita rates of centenarians. The U.S. Census Bureau's analysis highlights that regional demographics, migration patterns, and overall life expectancy play crucial roles in shaping these distributions.

Factors influencing centenarian populations

  • Migration Trends: Certain states like Florida, Arizona, and parts of the Northeast are often referred to as retirement magnets, which influences the distribution of older populations. However, this does not always correlate directly with the highest proportion of centenarians, as seen with Hawaii.
  • Population Density: States with large urban areas, where most centenarians live, tend to have higher overall counts. Conversely, some sparsely populated states like North Dakota have historically shown high per-capita rates, demonstrating a unique demographic pattern.
  • Socioeconomic Factors: Life expectancy can be influenced by socioeconomic factors, including access to healthcare, education levels, and lifestyle. This creates disparities in longevity across different states and demographics.

Centenarian data: Total count vs. per-capita rate

Understanding the difference between total number and per-capita rate is essential for accurately interpreting centenarian data. A state with a massive overall population will likely have the highest total number of centenarians, even if a small fraction of its residents reach 100. Conversely, a state with a relatively small population can have the highest per-capita rate if a significant percentage of its residents live to be 100.

Statistic State with Most Why?
Most Centenarians (Total) California Largest population in the U.S..
Highest Centenarian Rate (Per-Capita) Hawaii High overall life expectancy and favorable demographic factors.

The U.S. centenarian population is a fast-growing demographic, and projections indicate that their numbers will continue to rise over the next few decades. Factors like improved medical care and a greater understanding of healthy aging contribute to this trend nationwide. However, the geographic distribution and density of these older populations vary widely depending on the state and region.

Regional patterns and future projections

The most recent data from the U.S. Census Bureau points to regional differences in centenarian populations. In 2020, the Northeast region had the highest centenarian proportion, at 3.19 centenarians per 10,000 people, exceeding the national average. This is followed by the Midwest, highlighting a concentration of higher centenarian rates in these older, often more established regions of the country.

Looking forward, the overall centenarian population in the United States is projected to more than quadruple over the next 30 years, reaching approximately 422,000 by 2054. This significant increase will have major implications for healthcare systems, social services, and long-term care infrastructure across all states, with some regions seeing more pronounced changes than others.

Conclusion

The question of which US state has the most centenarians has two different answers depending on the metric. If you consider the sheer, total count, the answer is California, a direct consequence of its status as the most populous state. If you measure the population per capita, the answer is Hawaii, which boasts the highest concentration of residents aged 100 and older. Understanding these nuances reveals a deeper story about longevity across the United States, influenced by factors like population size, migration, and regional demographics. These trends continue to evolve, with projections showing a substantial increase in the centenarian population nationwide in the coming decades.

What contributes to high centenarian rates in some states?

High life expectancy, migration of older populations (particularly to retirement areas like Florida), and states where people have traditionally aged in place (often in the Midwest and Northeast) contribute to high centenarian rates. Specific lifestyle, diet, and social factors in states like Hawaii are also believed to play a significant role.

How does the total population affect centenarian numbers?

Total population is the single biggest factor influencing the raw number of centenarians in a state. For example, a populous state like California will naturally have more centenarians in total than a less populated state like Hawaii, even if the per-capita rate is lower.

Where do most US centenarians live?

Based on total population counts, most US centenarians live in highly populous states, with California, Florida, and New York leading the way. From a geographic perspective, in 2010, the majority of centenarians resided in urban areas, with the largest regional numbers found in the South.

Which states have the lowest proportion of centenarians?

Based on per-capita analysis, states such as Utah and Alaska consistently have some of the lowest proportions of centenarians. Utah's young population demographic and Alaska's unique environmental and demographic factors are potential reasons for these lower rates.

Are most centenarians men or women?

According to Social Security Administration data from 2022, the vast majority of centenarians are women, who make up 78% of the demographic. Men account for only 22% of centenarians.

How has the centenarian population changed over time?

The US centenarian population grew by 50% between the 2010 and 2020 Census counts. Projections indicate that the number of centenarians will continue to grow significantly in the coming decades, potentially quadrupling by 2054.

What region has the highest proportion of centenarians?

According to 2020 data, the Northeast region had the highest proportion of centenarians among all US regions. The Midwest also showed a high concentration of states with higher-than-average per-capita rates.

Frequently Asked Questions

California has the largest overall number of centenarians, a result of its large total population. Recent Census reports confirm California's leading position in total count.

Hawaii has the highest percentage, or proportion per capita, of centenarians. According to 2020 Census data, it had 4.44 centenarians for every 10,000 residents.

California has the most centenarians in total primarily because it is the most populated state in the US. A larger overall population naturally includes a larger number of people in every age category.

Hawaii's high proportion of centenarians is linked to its high overall life expectancy, which is influenced by factors like genetics, diet, and strong social cohesion within its communities.

The states with the fewest centenarians in total are typically those with the smallest overall populations. Historically, Alaska, Wyoming, and Vermont have been among the states with the lowest absolute numbers.

Demographics significantly affect the centenarian population, especially gender. In the U.S., a large majority of centenarians (78%) are women, with only 22% being men.

Data on centenarian populations is primarily collected and analyzed by the U.S. Census Bureau and the Social Security Administration.

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice. Always consult a qualified healthcare provider regarding personal health decisions.