Koizumi Domain

Koizumi Domain
小泉藩
Domain of Japan
1600–1871
reconstructed yagura of Koizumi Castle, later Koizumi jin'ya]
CapitalKoizumi jin'ya
Area
 • Coordinates34°47′38.41″N 135°26′55.01″E / 34.7940028°N 135.4486139°E / 34.7940028; 135.4486139
Historical eraEdo period
• Established
1600
1871
Contained within
 • ProvinceYamato Province
Today part ofNara Prefecture
Location of Koizumi jin'ya
Koizumi Domain (Japan)

Koizumi Domain (小泉藩, Koizumi-han) was a feudal domain under the Tokugawa shogunate of Edo period Japan. It was centered around Koizumi jin'ya in what is now the city of Yamatokōriyama, Nara and was ruled by the tozama daimyō Katagiri clan for all of its history.