diff --git a/localization/jp.xml b/localization/jp.xml
index 10e27e465..b1893d71d 100644
--- a/localization/jp.xml
+++ b/localization/jp.xml
@@ -19,4 +19,55 @@
 		<unit type="short_distance" value="曲尺" />
 		<unit type="base_distance" value="丈" />
 	</units>
+
+	<state>
+		<state name="Aichi" iso_code="JP-23" country="JP" zone="Asia"/>
+		<state name="Akita" iso_code="JP-05" country="JP" zone="Asia"/>
+		<state name="Aomori" iso_code="JP-02" country="JP" zone="Asia"/>
+		<state name="Chiba" iso_code="JP-12" country="JP" zone="Asia"/>
+		<state name="Ehime" iso_code="JP-38" country="JP" zone="Asia"/>
+		<state name="Fukui" iso_code="JP-18" country="JP" zone="Asia"/>
+		<state name="Fukuoka" iso_code="JP-40" country="JP" zone="Asia"/>
+		<state name="Fukushima" iso_code="JP-07" country="JP" zone="Asia"/>
+		<state name="Gifu" iso_code="JP-21" country="JP" zone="Asia"/>
+		<state name="Gunma" iso_code="JP-10" country="JP" zone="Asia"/>
+		<state name="Hiroshima" iso_code="JP-34" country="JP" zone="Asia"/>
+		<state name="Hokkaido" iso_code="JP-01" country="JP" zone="Asia"/>
+		<state name="Hyōgo" iso_code="JP-28" country="JP" zone="Asia"/>
+		<state name="Ibaraki" iso_code="JP-08" country="JP" zone="Asia"/>
+		<state name="Ishikawa" iso_code="JP-17" country="JP" zone="Asia"/>
+		<state name="Iwate" iso_code="JP-03" country="JP" zone="Asia"/>
+		<state name="Kagawa" iso_code="JP-37" country="JP" zone="Asia"/>
+		<state name="Kagoshima" iso_code="JP-46" country="JP" zone="Asia"/>
+		<state name="Kanagawa" iso_code="JP-14" country="JP" zone="Asia"/>
+		<state name="Kōchi" iso_code="JP-39" country="JP" zone="Asia"/>
+		<state name="Kumamoto" iso_code="JP-43" country="JP" zone="Asia"/>
+		<state name="Kyoto" iso_code="JP-26" country="JP" zone="Asia"/>
+		<state name="Mie" iso_code="JP-24" country="JP" zone="Asia"/>
+		<state name="Miyagi" iso_code="JP-04" country="JP" zone="Asia"/>
+		<state name="Miyazaki" iso_code="JP-45" country="JP" zone="Asia"/>
+		<state name="Nagano" iso_code="JP-20" country="JP" zone="Asia"/>
+		<state name="Nagasaki" iso_code="JP-42" country="JP" zone="Asia"/>
+		<state name="Nara" iso_code="JP-29" country="JP" zone="Asia"/>
+		<state name="Niigata" iso_code="JP-15" country="JP" zone="Asia"/>
+		<state name="Ōita" iso_code="JP-44" country="JP" zone="Asia"/>
+		<state name="Okayama" iso_code="JP-33" country="JP" zone="Asia"/>
+		<state name="Okinawa" iso_code="JP-47" country="JP" zone="Asia"/>
+		<state name="Osaka" iso_code="JP-27" country="JP" zone="Asia"/>
+		<state name="Saga" iso_code="JP-41" country="JP" zone="Asia"/>
+		<state name="Saitama" iso_code="JP-11" country="JP" zone="Asia"/>
+		<state name="Shiga" iso_code="JP-25" country="JP" zone="Asia"/>
+		<state name="Shimane" iso_code="JP-32" country="JP" zone="Asia"/>
+		<state name="Shizuoka" iso_code="JP-22" country="JP" zone="Asia"/>
+		<state name="Tochigi" iso_code="JP-09" country="JP" zone="Asia"/>
+		<state name="Tokushima" iso_code="JP-36" country="JP" zone="Asia"/>
+		<state name="Tokyo" iso_code="JP-13" country="JP" zone="Asia"/>
+		<state name="Tottori" iso_code="JP-31" country="JP" zone="Asia"/>
+		<state name="Toyama" iso_code="JP-16" country="JP" zone="Asia"/>
+		<state name="Wakayama" iso_code="JP-30" country="JP" zone="Asia"/>
+		<state name="Yamagata" iso_code="JP-06" country="JP" zone="Asia"/>
+		<state name="Yamaguchi" iso_code="JP-35" country="JP" zone="Asia"/>
+		<state name="Yamanashi" iso_code="JP-19" country="JP" zone="Asia"/>
+	</state>
+
 </localizationPack>