The town looked splendid in red, white and blue, with union flags flying and as well as being used as tablecloths so everyone could enjoy their picnics together.
Many of the shops had also taken the time to create coronation window displays which added to the atmosphere.
The event started in the afternoon so residents could enjoy watching the crowning ceremony at home.
And after watching how London did it, they came together for an afternoon of fun, food and entertainment.
As well as the entertainment and free treats on offer, there were a number of competitions, including Dress 2 Impress as King or Queen for the day, a colouring competition with the prize of a day out in Butlin’s, and a royal treasure hunt.
1. Spilsby Street Party
A moment in history for the residents of Spilsby who came together to celebrate the King's coronation. Photo: Mick Fox
2. Spilsby Street Party
Ready to (from left) are Bella Muggeson; Vikki Bamforth and (King) Oakley Bamforth Photo: Mick Fox
3. Spilsby Street Party
Grace Byrne; Emily Chalder and Kaiya Plant at Spilsby Street Party. Photo: Mick Fox
4. Spilsby Street Party
Kings and queens for the day - (from left ) Maddison; Gracie; Evalyn and Albert. Photo: Mick Fox