These unclaimed prizes amount to nearly £1 million in the county, with nearly £10 million left unclaimed nationally.
The data on premium bonds has been revealed amid calls to reform the tracing process of accounts, as it is too difficult for people gifted them or those who only ever had paper records.
The scheme is operated by National Savings and Investments, a state-owned bank that started the tax-free draws in 1957.
In Suffolk, a total of 25,828 prizes have been left unclaimed, with the biggest prize being £10,000.
As well as many recent prizes not being claimed, there is also a prize for £25 that was won in 1967.
In this month’s prize draw, people living in Suffolk have won more than £800,000, two people won £100,000, and six people took home £25,000.
The recent data also revealed that the value of premium bonds bought between 2024 and 2025 in Suffolk was £392,270,119.
During the same time, there were 1,231,561 prizes won, which amounted to £93,187,975.