Number of millionaires rises again: up by 81 thousand in 2025

The average millionaire household has 1.5 million in assets

The median net worth of a millionaire household. That means that 50 percent of them had fewer assets (between 1 and 1.5 million euros) and 50 percent had more. Median household wealth in the non-millionaire category was 131 thousand euros.
Two-thirds of millionaire households had assets of between 1 and 2 million euros. A quarter of them had assets worth between 2 million and 5 million euros. A smaller share, 3 percent, had assets worth 10 million euros or more.

Millionaires are older than non-millionaires, on average

The main breadwinners in millionaire households are older, on average, than those in non-millionaire households. In 2025, millionaires were 61 years old on average, meaning they were 9 years older than non-millionaires. Slightly less than 3 percent of millionaires are younger than 35. Nearly 70 percent are aged 55 years or older, compared with 46 percent of non-millionaires.

Most wealth consists of substantial business interests and business assets

Of millionaires' assets, 39 percent consist of substantial business interests (defined as ownership of at least 5 percent of a company’s shares) and business assets. The value of their own homes represented 29 percent of their assets. Among non-millionaire households, homeownership accounts for nearly 80 percent of wealth, while substantial interest and business assets account for 3 percent.

Among younger millionaire households, substantial business interests and business assets make up the largest share of assets. This share decreases as millionaires get older, while the share of homeownership increases, by contrast.

Most millionaires live in the municipalities of Bloemendaal and Laren

The provinces of Noord-Holland and Utrecht have the most millionaires relative to their populations (8 and 9 percent of households, respectively). The two municipalities with the highest proportion of millionaires are Bloemendaal (38 percent) and Laren (37 percent). Other municipalities with a high number of millionaires relative to their population are Rozendaal (32 percent), Blaricum and Heemstede (both 24 percent).

The fewest millionaire households are found in the provinces of Groningen, Flevoland, Limburg and Friesland. There, less than 5 percent of households had assets of 1 million euros or more in 2025. The municipalities of Brunssum, Heerlen and Kerkrade in Limburg have the fewest millionaire households relative to their populations, in addition to Pekela in the province of Groningen.