Place · region

Østfold

Østfold is a region of south-eastern Norway on the eastern side of the Oslofjord, bordering Sweden, with towns such as Fredrikstad, Sarpsborg, Moss and Halden. In the Viking Age it formed the core of the petty kingdom of Vingulmark, and it was long a frontier exposed to Danish and Swedish attack. A county until 2020, it was merged into Viken and became a county again in 2024.

Østfold
Image: Geir Hval (www.MacWhale.eu) · CC BY-SA 4.0 · Wikimedia Commons

Mentioned in 1 state history

Vingulmark

See also

Cite this entry
APA
The Epoch Institute. (2026). Østfold. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/ostfold
MLA
“Østfold.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/ostfold. Accessed .
Chicago
The Epoch Institute. “Østfold.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/ostfold.
Harvard
The Epoch Institute (2026) ‘Østfold’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/ostfold (Accessed: ).

Last reviewed October 2026Random entry ↻