Tomakomai

Tomakomai
苫小牧市
Flag of Tomakomai
Official seal of Tomakomai
Location of Tomakomai in Hokkaido (Iburi Subprefecture)
Location of Tomakomai in Hokkaido (Iburi Subprefecture)
Tomakomai is located in Japan
Tomakomai
Tomakomai
Location in Japan
Coordinates: 42°38′N 141°36′E / 42.633°N 141.600°E / 42.633; 141.600
CountryJapan
RegionHokkaido
PrefectureHokkaido (Iburi Subprefecture)
First official recorded1799 AD
City settled1 April 1948
Government
 • MayorHirofumi Iwakura
Area
 • Total
561.57 km2 (216.82 sq mi)
Population
 (July 31, 2023)
 • Total
167,372
 • Density300/km2 (770/sq mi)
Time zoneUTC+09:00 (JST)
City hall address4-5-6 Asahimachi, Tomakomai-shi, Hokkaido
053-8722
ClimateDfb
Websitewww.city.tomakomai.hokkaido.jp
Symbols
BirdSwan
FlowerTree flower: Hasukappu (Lonicera caerulea var. emphyllocalyx)
Grass flower: Hanashōbu (Iris ensata var. ensata)
MascotToma Chop
TreeJapanese Rowan
Aerial view of Tomakomai
Tomakomai city hall
Lake Utonai

Tomakomai (苫小牧市, Tomakomai-shi) is a city and port in Iburi Subprefecture, Hokkaido, Japan. It is the largest city in the Iburi Subprefecture, and the fourth largest city in Hokkaido. As of 31 July 2023, it had an estimated population of 167,372, with 83,836 households, and a population density of 298 persons per km² (770 persons per mi²). The total area is 561.57 km2 (216.82 sq mi).

The city is known for its high catch of Arctic surf clams.