30 feet

tall and weighing over 6,000 pounds! It's housed at the Casey Country Club. It is the world's largest golf tee, constructed with various widths of yellow pine wood, 60 gallons of glue and 120 lbs of screws weighs 6,659 lbs and measures 30 feet 9 inches in height.

https://maps.roadtrippers.com/us/casey-il/attractions/worlds-largest-golf-tee

The giant Golf Tee was suggested by the local Country Club president as a way of encouraging more interest in Casey's public golf course. They began work on the tee in July of 2012. Laminating lumber together to form the tee's rough form took five months. Once the pieces of wood were secured, a chainsaw and sander were used to shape and smooth the surface. The Golf Tee claimed its "World's Largest" status in May of 2013.

https://www.bigthingssmalltown.com/golf-tee

The golf tee was made by Jim Bolin (USA) and was presented and measured in Casey, Illinois, USA, on 29 January 2013. The golf tee was made out of yellow pine boards, that were first glued together to form a large block out of which the tee was shaped using chainsaws.

Yellow Pine

Largest Golf Tee:
Casey, Illinois
Length	30 feet 9 inches
Head Diameter	6 feet 3 inches
Shaft Width	2 feet 1 inch

https://www.guinnessworldrecords.com/world-records/largest-golf-tee

Worlds Largest Golf Tee is in Illinois
https://www.google.com/maps/place/Worlds+Largest+Golf+Tee