City (single-tier)
City of Thunder Bay
From top left: View from Mount McKay, Lakehead University, Magnus Theatre, City Hall, Tourist Pagoda
Flag
Coordinates: 48°22′56″N 89°14′46″W / 48.38222°N 89.24611°W / 48.38222; -89.24611Coordinates: 48°22′56″N 89°14′46″W / 48.38222°N 89.24611°W / 48.38222; -89.24611
Country	Canada
Province	Ontario
District	Thunder Bay District
CMA	Thunder Bay
Settled	1683 as Fort Caministigoyan
Amalgamation	January 1, 1970
Electoral Districts      Federal	Thunder Bay—Superior North/Thunder Bay—Rainy River
Provincial	Thunder Bay—Superior North/Thunder Bay—Atikokan
Government
• Type	Municipal Government
• Mayor	Bill Mauro
• City manager	Norm Gale
• Governing Body	Thunder Bay City Council
• MPs	Patty Hajdu (Liberal) Marcus Powlowski (Liberal)
• MPPs	Michael Gravelle (OLP) Judith Monteith-Farrell (ONDP)
Area
• City (single-tier)	447.5 km2 (172.8 sq mi)
• Land	328.24 km2 (126.73 sq mi)
• Water	119.0 km2 (45.9 sq mi)  26.6%
• Urban	179.38 km2 (69.26 sq mi)
• Metro	2,556.37 km2 (987.02 sq mi)
Elevation	199 m (653 ft)
Population  (2016)
• City (single-tier)	107,909 (50th)
• Density	330.1/km2 (855/sq mi)
• Urban	93,952 (33rd)
• Urban density	569.9/km2 (1,476/sq mi)
• Metro	121,621 (33rd)
• Metro density	47.6/km2 (123/sq mi)
Time zone	UTC−5 (EST)
• Summer (DST)	UTC−4 (EDT)
Forward sortation area	P7A to P7G, P7J to P7K
NTS Map	052A06
GNBC Code	FCWFX
Website	www.thunderbay.ca

Thunder Bay is the most populous city in Northwestern Ontario, in Canada. Its population was 107,909 as of the 2016 census. Before, it was two cities called Fort William and Port Arthur. Thunder Bay has the second largest population in Northern Ontario, behind Greater Sudbury. view more...