A mystery lottery winner in Hervey Bay is being urged to check their ticket after an unregistered Oz Lotto entry won $20 million in the latest draw.

The winning ticket was purchased at Nextra Fraser Gateway Newsagency in Urraween, in the Hervey Bay area. Because the ticket was not registered, lottery officials do not know the winner's identity and are encouraging local residents to check their tickets.

The Hervey Bay winner shares the division-one prize with another Australian winner from Tasmania. Together, the two winning tickets account for a $40 million jackpot, with each winner receiving $20 million.

The news is particularly significant for the Hervey Bay community because the winning ticket was purchased locally. Residents who recently bought an Oz Lotto entry from the Nextra Fraser Gateway Newsagency are being encouraged to carefully check their tickets.

An unregistered ticket means lottery officials cannot automatically contact the winner. Unlike registered entries, where the player's details are recorded, an unregistered ticket remains anonymous until the winner comes forward.

The winner may not yet realise that they are holding a multi-million-dollar ticket. Lottery officials are therefore asking people in the Hervey Bay area to check their tickets as soon as possible.

The winning numbers for the draw were 2, 19, 27, 35, 7, 22 and 30, with supplementary numbers 37, 41 and 32.

The announcement has created excitement around Hervey Bay, particularly among customers who regularly purchase lottery tickets from local newsagencies.

For the local newsagency, selling a major division-one winning ticket can also bring considerable attention. Such wins often encourage other residents to check their own entries and visit the location where the winning ticket was purchased.

The identity of the Hervey Bay winner remains unknown because the ticket was not registered. The winner will need to make contact with the lottery operator and present the winning ticket to claim the prize.

A $20 million win would represent a life-changing amount of money, potentially allowing the winner to make major changes to their financial situation, purchase property, travel or invest for the future.

The story is likely to generate considerable interest across Hervey Bay because the winning ticket was purchased within the local community rather than being an anonymous online entry.

Residents who purchased an Oz Lotto ticket at the relevant newsagency are being encouraged to check their entries carefully.