There were also some minor boundary adjustments west of the lake Osensjøen in 1943 and again in 1964 when some areas were transferred from Elverum Municipality to Trysil.

The official blazon is "Azure, two ski poles issuant from the base pointing up" (Norwegian: I blått to oppvoksende sølv skistaver).

This means the arms have a blue field (background) and the charge is two vertical ski poles pointing upwards.

The charge has a tincture of argent which means it is commonly colored white, but if it is made out of metal, then silver is used.

The design is meant to symbolize Trysil in the past, present, and future since skiing has long been an important way of transportation over the years (including the legend of Trysil-Knut), but has more recently become a major tourist attraction.

The small village of Nybergsund was bombed by German aviators during World War II on 11 April 1940, when King Haakon VII and Crown Prince Olav were there.

Due to its inland location, Trysil has comfortably warm summer highs, but colder winters than most other populated places in Southern Norway.

Winter temperatures are often lower in Trysil than they are in coastal areas of Northern Norway above the Arctic Circle.

The weather station started operating in 1993 and is located near Mosanden Næringspark, about 4 kilometres (2.5 mi) south of Innbygda.

Trysil is a great place to explore the Norwegian nature and participating in various outdoor activities like guided trips, river fishing, dog sledge driving, elk safari, night photography, stargazing.

This includes a mountain at Norway's largest ski resort, which offers many of the country's most widely acclaimed downhill and slalom slopes.