4 Mingelo Street has been the location of the Peak Hill Post Office since September 21, 1899.

The Peak Hill community came together to celebrate 125 years of the institution - and its continuing vital place in the community.

While the building has had extensions and alterations over the 125 years it is essentially still the same building it was it 1899.

The original building cost 1100 pounds to build which is around $201,000 in today's currency.

It is believed that the building was extended between 1915 and 1920 to include a public telephone.

The building was then extended again in 1922-1923 to include the manual for exchange and further extensions and alterations were made during the 1970's that crated indoor amenities for males and females who were working on the exchange and in the post office.

There are plans for both the 1922-23 extension and the 1970's extension.

Cathy Goodwin is the current licensee, who purchased the Post Office with her husband Tim who took on the mail contracts in 2001.

Eddie Parrott, former postmaster, moved to the Peak Hill Post Office in 1971 and retired in 1999.

Between Cathy and Eddie they have 51 years of service.

To celebrate this amazing milestone Mingelo Street was closed for a few hours on Saturday, September 21 to let the Peak Hill community celebrate.

"Many former locals came home and took delight in browsing through the Post Master's diary, finding references to themselves," Cathy said.

"Michael Watson from Bathurst found an entry from the day that he commenced work at the Peak Hill Post Office on October 27, 1969.

"He told us that he continued working for Australia Post for 43 years. His final position with the business was as Area Manger for the Central Division," Cathy added.

Visitors and locals were treated to barbecue sandwiches from the footy club, delicious coffees from the Western Access Coffee Cart and ice-cream from Karrandy.

There were stalls to browse and Wilson the Clydesdale was in attendance making friends with all that passed him.

"Tim the postie was wondering how long it would take to do his mail run on Wilson," Cathy said.

There were plenty of games and activities to keep the kids entertained and Cathy said she spotted a few potential golfers and paleontologists amongst the activities.

Cathy and Eddie cut the anniversary cake while Eddie reminisced about his time at the post office.

"What a magnificent day celebrating a magnificent building," Cathy said.

As part of the 125 year celebrations the Peak Hill Post Office is putting together a time capsule that will be buried to be rediscovered for the 150 year anniversary.

The post office will take post cards with your messages to Peak Hill in the next 25 years for the next month.