Held on Saturday, the celebrations will be bigger and better than ever after last year's event, scheduled for March, was put on ice due to the unfolding COVID-19 pandemic.
The celebrations for the small community, north-west of Tongala, will kick-off from 10 am.
Included in the day's activities is a car boot sale, a sauce competition and plenty of games for kids to be entertained.
A timeline of the Koyuga Hall — from its initial beginnings in 1920 — will be on show, while the cutting of the centenary cake will be held at 2pm.
A donation box will also be on site, raising money for Echuca Regional Health and cancer and wellness services.
But that's only the start of the party, with celebrations to continue well into the night with an evening of entertainment.
Starting from 6pm and going until late, Koyuga Inc will present Walking South, an Echuca-based acoustic trio.
A ticketed event, the show will also include a barbecue, while a licensed bar will be on site. Eftpos is available.
Transport by bus from Koyuga, Tongala, Echuca and Kyabram is available, while attendees are also invited to camp on site.
For general admission tickets, priced at $15, head to http://www.trybooking.com/BQDNB
Bus and camp tickets are also available at trybooking.com
● For more information on the event, phone Mel Smith on 0400 902 941 or email Koyuga Inc at koyugainc@gmail.com.