Karuizawa, Nagano

Karuizawa
軽井沢町
Typical scenery of Karuizawa
Location of Karuizawa in Nagano Prefecture
Karuizawa
 
Karuizawa
Karuizawa (Central Japan)
Karuizawa
Karuizawa (Nagano Prefecture)
Coordinates: 36°20′55″N 138°35′49″E / 36.34861°N 138.59694°E / 36.34861; 138.59694
CountryJapan
RegionChūbu (Kōshin'etsu)
PrefectureNagano
DistrictKitasaku
Area
 • Total
156.03 km2 (60.24 sq mi)
Population
 (As of 1 October 2025)
 • Total
21,834
 • Density139.93/km2 (362.43/sq mi)
Time zoneUTC+9 (Japan Standard Time)
Phone number0267-45-8111
Address2381-1 Nagakura, Karuizawa-machi, Kitasaku-gun, Nagano-ken 389-0192
ClimateDfb
WebsiteOfficial website
Symbols
BirdBrown-headed thrush
FlowerSakurasō (Primula sieboldii)
TreeMagnolia kobus

Karuizawa (軽井沢町, Karuizawa-machi) is a resort town located in Nagano Prefecture, Japan. As of 1 October 2025, the town had an estimated population of 21,834 in 11,285 households, and a population density of 139 persons per km2. The total area of the town is 156.03 km2 (60.24 sq mi).

Originally, there was a stage station (shukuba) called Karuisawa-shuku on the Nakasendō. The Shin'etsu Line opened in 1888 and the town became popular as a Western-style hill station around that time.