
A millionaire is an individual whose
net worth or
wealth
Wealth is the abundance of valuable financial assets or physical possessions which can be converted into a form that can be used for transactions. This includes the core meaning as held in the originating Old English word , which is from an ...
is equal to or exceeds one
million units of
currency
A currency is a standardization of money in any form, in use or circulation as a medium of exchange, for example banknotes and coins. A more general definition is that a currency is a ''system of money'' in common use within a specific envi ...
. Depending on the currency, a certain level of prestige is associated with being a millionaire.
Many national currencies have, or have had at various times, a low unit value, in many cases due to past
inflation
In economics, inflation is an increase in the average price of goods and services in terms of money. This increase is measured using a price index, typically a consumer price index (CPI). When the general price level rises, each unit of curre ...
. It is much easier and less significant to be a millionaire in those currencies, thus a millionaire in the local currency of
Hong Kong
Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...
or
Taiwan
Taiwan, officially the Republic of China (ROC), is a country in East Asia. The main geography of Taiwan, island of Taiwan, also known as ''Formosa'', lies between the East China Sea, East and South China Seas in the northwestern Pacific Ocea ...
, for example, may be merely of average wealth, or perhaps less wealthy than average. A millionaire in
Zimbabwe in 2007 could have been extremely poor. Because of this, the term 'millionaire' generally refers to those whose assets total at least one million units of a high-value currency, such as the
United States dollar
The United States dollar (Currency symbol, symbol: Dollar sign, $; ISO 4217, currency code: USD) is the official currency of the United States and International use of the U.S. dollar, several other countries. The Coinage Act of 1792 introdu ...
,
euro
The euro (currency symbol, symbol: euro sign, €; ISO 4217, currency code: EUR) is the official currency of 20 of the Member state of the European Union, member states of the European Union. This group of states is officially known as the ...
, or
pound sterling
Sterling (symbol: £; currency code: GBP) is the currency of the United Kingdom and nine of its associated territories. The pound is the main unit of sterling, and the word '' pound'' is also used to refer to the British currency general ...
.
At the end of 2011, there were around 5.1 million
HNWIs in the United States,
while at the same time there were 11 million millionaires
in a total of 3.5 million millionaire households,
including those 5.1 million HNWIs. , there were estimated to be just over 16 million dollar-millionaires in the world according to the World's Wealthiest Cities Report 2025 by
Henley & Partners. The United States had the highest number of millionaires (6.0 million) of any country, whilst New York is the wealthiest city with 385,000 millionaires. In countries that use the
short scale number naming system, a
billionaire is someone who has at least a thousand times a million dollars, euros or pounds.
Terminology
The word "millionaire" was apparently coined in French in 1719 to describe speculators in the
Mississippi Bubble who earned millions of
livres in weeks before the bubble burst.
The standard French spelling is now , though the earliest reference uses a single ''n''.
The word was first used (as millionnaire, double "n") in French in 1719 by Steven Fentiman, and is first recorded in English in an article in ''
The Times
''The Times'' is a British Newspaper#Daily, daily Newspaper#National, national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its modern name on 1 January 1788. ''The Times'' and its si ...
'' in 1795. Earlier English writers also mention the French word, including Sir
William Mildmay in 1764. The
anglicisation
Anglicisation or anglicization is a form of cultural assimilation whereby something non-English becomes assimilated into or influenced by the culture of England. It can be sociocultural, in which a non-English place adopts the English language ...
''millionary'' was used in 1786 by
Thomas Jefferson
Thomas Jefferson (, 1743July 4, 1826) was an American Founding Fathers of the United States, Founding Father and the third president of the United States from 1801 to 1809. He was the primary author of the United States Declaration of Indepe ...
while serving as Minister to France; he wrote: "The poorest labourer stood on equal ground with the wealthiest Millionary".
Influence
While millionaires constitute only a small percentage of the population, they hold substantial control over economic resources, with the most powerful and prominent individuals usually ranking among them. The total amount of money held by millionaires can equal the amount of money held by a far higher number of poor people. The
Gini coefficient
In economics, the Gini coefficient ( ), also known as the Gini index or Gini ratio, is a measure of statistical dispersion intended to represent the income distribution, income inequality, the wealth distribution, wealth inequality, or the ...
, and other measures in economics, estimated for each country, are useful for determining how many of the poorest people have the equivalent total wealth of the few richest in the country. ''
Forbes
''Forbes'' () is an American business magazine founded by B. C. Forbes in 1917. It has been owned by the Hong Kong–based investment group Integrated Whale Media Investments since 2014. Its chairman and editor-in-chief is Steve Forbes. The co ...
'' and ''
Fortune'' magazines maintain lists of people based on their net worth and are generally considered authorities on the subject. ''Forbes'' listed 1,645 dollar billionaires in 2014, with an aggregate net worth of $6.4
trillion
''Trillion'' is a number with two distinct definitions:
*1,000,000,000,000, i.e. one million 1,000,000, million, or (ten to the twelfth Exponentiation, power), as defined on the long and short scales, short scale. This is now the meaning in bot ...
, an increase from $5.4 trillion the previous year (see
US-dollar billionaires in the world).
According to a report by Hurun, a market research firm based in China, the global billionaire population stood at 3,381 in 2022.
Sixteen percent of millionaires inherited their fortunes. Forty-seven percent of millionaires are business owners. Twenty-three percent of the world's millionaires got that way through paid work, consisting mostly of skilled professionals or managers. Millionaires are, on average, 61-years-old with $3.05 million in assets.
Historical worth
Depending on how it is calculated, a million US dollars in 1900 is equivalent to $ (in ):
* $24.8 million using the
consumer price index
A consumer price index (CPI) is a statistical estimate of the level of prices of goods and services bought for consumption purposes by households. It is calculated as the weighted average price of a market basket of Goods, consumer goods and ...
,
* $61.4 million using the gold price
Thus one would need to have almost thirty million dollars today to have the
purchasing power
Purchasing power refers to the amount of products and services available for purchase with a certain currency unit. For example, if you took one unit of cash to a store in the 1950s, you could buy more products than you could now, showing that th ...
of a US millionaire in 1900, or more than 100 million dollars to have the same impact on the US economy.
Multimillionaire
Dated ways of describing someone worth ''n'' millions are "''n''-fold millionaire" and "millionaire ''n'' times over". Still commonly used is ''multimillionaire'', which refers to individuals with net assets of 2 million or more of a currency. There are approximately 584,000 US$ multimillionaires who have net assets of $10M+ worldwide in 2017.
Roughly 1.5% of US$ millionaires are "ultra-high-net-worth individuals" (ultra-HNWIs), defined as those with a net worth or wealth of $30 million or more. There are approximately 226,000 ultra-HNWIs in the world in 2017, according to Wealth-X.
The rising prevalence of people possessing ever increasing quantities of wealth has given rise to additional terms to further differentiate millionaires. Individuals with net assets of 100 million or more of a currency are commonly termed ''centimillionaires,'' or more rarely ''hectomillionaires''.
HNWI population
High-net-worth individual
In the financial services industry, a high-net-worth individual (HNWI) is a person who maintains liquid assets at or above a certain threshold. Typically the criterion is that the person's financial assets (excluding their primary residence) are ...
s (those with financial assets, not including the residence, greater than a million US dollars):
Global cities with the most super-wealthy millionaires per capita (higher than $30 million)
According to wealth research group Wealth-X that released its latest
UHNW Cities report, showing the residential footprint of the world's top ultra-high net worth (UHNW) individual cities. Excluding
Monaco
Monaco, officially the Principality of Monaco, is a Sovereign state, sovereign city-state and European microstates, microstate on the French Riviera a few kilometres west of the Regions of Italy, Italian region of Liguria, in Western Europe, ...
– which has very high UHNWI density –
Geneva
Geneva ( , ; ) ; ; . is the List of cities in Switzerland, second-most populous city in Switzerland and the most populous in French-speaking Romandy. Situated in the southwest of the country, where the Rhône exits Lake Geneva, it is the ca ...
has the highest density of super-wealthy people per capita in the world. The city is known as the most compact
metropolitan area
A metropolitan area or metro is a region consisting of a densely populated urban area, urban agglomeration and its surrounding territories which share Industry (economics), industries, commercial areas, Transport infrastructure, transport network ...
, and also enjoys a concentration of affluence.
Singapore
Singapore, officially the Republic of Singapore, is an island country and city-state in Southeast Asia. The country's territory comprises one main island, 63 satellite islands and islets, and one outlying islet. It is about one degree ...
has the second-highest concentration, followed by
San Jose, the center of
Silicon Valley
Silicon Valley is a region in Northern California that is a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical area of the Santa Clara Valley ...
, and the largest city in Northern California.
While
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
leads in terms of overall UHNW footprint,
London
London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...
has a similar number of UHNW "second homers" despite a considerably smaller population.
Paris
Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
features as the second-highest European city, after London, Wealth-X said.
Among suburbs and smaller towns,
Beverly Hills
Beverly Hills is a city located in Los Angeles County, California, United States. A notable and historic suburb of Los Angeles, it is located just southwest of the Hollywood Hills, approximately northwest of downtown Los Angeles. Beverly Hil ...
has the highest overall number of UHNW residents, and
Aspen
Aspen is a common name for certain tree species in the Populus sect. Populus, of the ''Populus'' (poplar) genus.
Species
These species are called aspens:
* ''Populus adenopoda'' – Chinese aspen (China, south of ''P. tremula'')
* ''Populus da ...
has the highest concentration on a per capita basis, the report showed.
Ultra-high net worth individuals are defined by Wealth-X as those whose total net worth is higher than $30 million (
R400 million).
Number of UHNWIs per country
The following is a list of the countries with the most Ultra high-net-worth individuals (UHNWI) as of 2023 as per the 2024 Knight Frank's Wealth Report:
Countries by number and percentage of millionaires
* indicates links to articles on the economy of the country or territorial goods.
Number of millionaires by city
, New York is the wealthiest city in the world with 384,500 HNWIs according to the World's Wealthiest Cities Report 2025 by
Henley & Partners.
The amount of wealth held by people in New York City is nearly $3 trillion.
Some places have a sharp, quantitative increase in seasonal wealthy residents including cities such as
Paris
Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
and
Miami
Miami is a East Coast of the United States, coastal city in the U.S. state of Florida and the county seat of Miami-Dade County, Florida, Miami-Dade County in South Florida. It is the core of the Miami metropolitan area, which, with a populat ...
,
Rocky Mountains
The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in great-circle distance, straight-line distance from the northernmost part of Western Can ...
ski towns like
Aspen
Aspen is a common name for certain tree species in the Populus sect. Populus, of the ''Populus'' (poplar) genus.
Species
These species are called aspens:
* ''Populus adenopoda'' – Chinese aspen (China, south of ''P. tremula'')
* ''Populus da ...
, and various beachfront towns of the
French Riviera
The French Riviera, known in French as the (; , ; ), is the Mediterranean coastline of the southeast corner of France. There is no official boundary, but it is considered to be the coastal area of the Alpes-Maritimes department, extending fr ...
like
Cannes
Cannes (, ; , ; ) is a city located on the French Riviera. It is a communes of France, commune located in the Alpes-Maritimes departments of France, department, and host city of the annual Cannes Film Festival, Midem, and Cannes Lions Internatio ...
.
[
]
Disparity in United States
There is a wide disparity in the estimates of the number of millionaires residing in the United States.
A quarterly report prepared by the Economist Intelligence Unit
The Economist Intelligence Unit (EIU) is the research and analysis division of the Economist Group, providing forecasting and advisory services through research and analysis, such as monthly country reports, five-year country economic forecasts ...
on behalf of Barclays Wealth in 2007 estimated that there were 16.6 million millionaires in the US. At the end of 2011, there were around 5.1 million HNWIs in the US, while at the same time, there were 11 million millionaires in a total of 3.5 million millionaire households, including those 5.1 million HNWIs.
According to TNS Financial Services, as reported by CNN Money, 2 million households in the US alone had a net worth of at least $1 million excluding primary residences in 2005. According to TNS, in mid-2006 the number of millionaire US households was 9.3 million, with an increase of half a million since 2005.[TNS :: TNS Reports Record Breaking Number of Millionaires in the USA](_blank)
. Tnsglobal.com. Retrieved on 2011-11-23. The study found that half of all millionaire households in the US were headed by retirees. In 2004 the United States saw a "33 percent increase over the 6.2 million households that met that criteria [sic] in 2003", fueled largely by the country's real estate boom.
A report by Capgemini
Capgemini SE is a French Multinational corporation, multinational information technology (IT) services and consulting company, headquartered in Paris, France.
History
Capgemini was founded by Serge Kampf in 1967 as an enterprise management and d ...
for Merrill Lynch
Merrill Lynch, Pierce, Fenner & Smith Incorporated, doing business as Merrill, and previously branded Merrill Lynch, is an American investment management and wealth management division of Bank of America. Along with BofA Securities, the investm ...
on the other hand stated that in 2007 there were approximately 3,028,000 households in the United States who held at least US$1 million in financial assets, excluding collectibles
A collectable (collectible or collector's item) is any object regarded as being of value or interest to a collector. Collectable items are not necessarily monetarily valuable or uncommon. There are numerous types of collectables and terms t ...
, consumables
Consumables (also known as consumable goods, non-durable goods, or soft goods) are goods that are intended to be consumed. People have, for example, always consumed food and water. Consumables are in contrast to durable goods. Disposable product ...
, consumer durables and primary residences. According to TNS Financial Services, Los Angeles County, California
Los Angeles County, officially the County of Los Angeles and sometimes abbreviated as LA County, is the List of United States counties and county equivalents, most populous county in the United States, with 9,663,345 residents estimated in 202 ...
, had the highest number of millionaires, totalling over 262,800 households in mid-2006.
See also
*Aggregate demand
In economics, aggregate demand (AD) or domestic final demand (DFD) is the total demand for final goods and services in an economy at a given time. It is often called effective demand, though at other times this term is distinguished. This is the ...
*Billionaire
A billionaire is a person with a net worth of at least 1,000,000,000, one billion units of a given currency, usually of a major currency such as the United States dollar, euro, or pound sterling. It is a sub-category of the concept of the ultr ...
* Business oligarch
*Distribution of wealth
The distribution of wealth is a comparison of the wealth of various members or groups in a society. It shows one aspect of economic inequality or heterogeneity in economics, economic heterogeneity.
The distribution of wealth differs from the i ...
*High-net-worth individual
In the financial services industry, a high-net-worth individual (HNWI) is a person who maintains liquid assets at or above a certain threshold. Typically the criterion is that the person's financial assets (excluding their primary residence) are ...
*Upper middle class
In sociology, the upper middle class is the social group constituted by higher status members of the middle class. This is in contrast to the term '' lower middle class'', which is used for the group at the opposite end of the middle-class stra ...
*Upper class
Upper class in modern societies is the social class composed of people who hold the highest social status. Usually, these are the wealthiest members of class society, and wield the greatest political power. According to this view, the upper cla ...
* Six figure income
* Wealth concentration
*'' Who Wants to Be a Millionaire?'' (game show)
*'' The Millionaire Next Door'' (book)
* Moscow Millionaire Fair
* Pierre Lorillard II (first American to be designated a "millionaire")
* List of African millionaires
* Lists of billionaires
* Sunday Times Rich List
References
{{Authority control
Distribution of wealth