Just under 14 per cent of people who responded to the online survey are Taureans, compared with just over 8 per cent of the population as a whole.
Aries was the second most common star sign in the sector.
Taurus is represented by the bull. Those born under the sign are traditionally supposed to be loyal, caring and determined. In their work, Taureans tend to be reliable, practical, ambitious and hard working.
Rosie Chapman, policy director at the Charity Commission, is a Taurus.
"Taureans tend to be straightforward, loyal, hard working and dependable," she said. "But I suppose our less positive characteristics include loving the good things in life a little too much!"
Peter Martin, the chief executive of drug and alcohol treatment agency Addaction, is another high- profile Taurean in the charity sector.
"Peter is well known in the drugs treatment field for his amazing energy, his ability to motivate, his warmth and his enthusiasm," said Rosie Brocklehurst, press officer for the charity.
"Determination and persistence definitely describe him. He takes the long view but can get frustrated with others who can't or won't do the same. He likes people, often taking them at face value."
Famous Taureans include Shakespeare, Karl Marx, David Beckham and the Queen. At their worst they can be "obstinately and exasperatingly self-righteous, unoriginal, rigid, ultra-conservative, argumentative, querulous bores and stuck in a self-centered rut", according to the Astrology Online website.
Taurus is an earth sign and is also associated with money, according to celebrity astrologer Russell Grant. He said: "As with any sign, there are good and bad variants.
"A high-minded Taurean would be willing to help disadvantaged people and those who don't have enough money. But low-minded Taureans are always looking out for rewards for themselves."
The survey sampled 425 people. NfpSynergy said that statistically there is only a one-in-20 chance that these figures could have been replicated in a random sample of the public.