Article

10204 ／いせさきし

Isesaki City

Time signals passed to a siren in 1937.

Former Time Signal Bell Tower

01 ／ Ancient office

An octagonal storehouse, dug up,matches a 1030 record's "Hachimen Koso".

A 2005 survey found an octagonal storehouse. The city describes it as the first such find in Japan. It matches the entry for the Sai District granary, "Hachimen Koso", in the 1030 Kozuke Province Kotai Jitsurokucho. The storehouses were in use from the late 7th to the early 10th century. It is a National Historic Site.

2005: octagonal storehouse found
Matches the "Hachimen Koso" entry
National Historic Site, 2014

02 ／ Burial mound

A 6.8-tonne stone coffin, thought to bemade by craftsmen sent from Kinai.

On the rear mound of Ofujiyama Kofun, a keyhole-shaped tomb 125 metres long, lies a sandstone nagamochi-gata stone coffin, 285 cm long and weighing 6.8 tonnes. In the prefecture it is confirmed only here and at Tenjinyama Kofun in Ota. Craftsmen from the Kinai region are thought to have been sent east to make it.

285 cm long, 6.8 tonnes
Confirmed at only two sites in the prefecture
Prefectural Important Cultural Property, 2001

03 ／ Irrigation canal

No sign of water on the canal floor,so it is thought to be unfinished.

Onna-bori is a mid-12th-century irrigation canal running 12.75 km from Kamiizumi-cho in Maebashi to Tabui-cho in Isesaki. No trace of flowing water has been found on its floor, and it is thought to be unfinished. A legend says a woman dug it overnight with a hairpin. It became a National Historic Site in 1983.

12.75 km in total length
Dug in the mid-12th century
National Historic Site, 1983 (Akabori area)

Isesaki City from the sky

Now and 1974–78. Tap a photo to zoom in.

Now1974–78

Wide (about 6 km across)

Close (about 1.5 km across)

Now (shot May–July 2010)Shot 1974–78

Source: Geospatial Information Authority of Japan (GSI) GSI Tiles（全国最新写真（シームレス）／国土画像情報（第一期：1974〜1978年撮影））

Open in GSI Maps (now)Open in GSI Maps (1974–78)

Living here

138 minutes from Shinjuku by express bus, 178 from Tokyo Station.

about 210,000 people

Isesaki Station in the city is served by the JR Ryomo Line and the Tobu Isesaki Line. The express bus that stops in front of it takes 138 minutes from Busta Shinjuku and 178 minutes from Tokyo Station's Yaesu South Exit on the fastest daily service (JR Bus Kanto timetable, revised 1 June 2026; reserved seats). The city covers 139.44 km² and is almost entirely flat.

People living here: 211,850people
Area: 139.44km²
Households: 86,200households
Rent (average for rentals): 46,201yen
Healthcare: 10 hospitals ／ 147 clinics

Area and habitable land at the same scalee-Stat B1101 / B1103

Population from 2005 onward (municipal boundary changed).2005-01-01 に合併。2005年調査から市域が変わっている。

Children waiting for childcare: —44 nurseries and similar
Home purchase subsidy: —
Average annual temperature: —

These 3 items are waiting on a nationwide data source. We do not fill them with estimates.

ACCESS

Where you can go from here.

Isesaki City in Japan36.311°N 139.197°E

to TokyoHighway bus178min
to ShinjukuHighway bus138min

Travel times follow JRバス関東「高速バスデジタル時刻表」の『東京・新宿～伊勢崎・前橋駒形（群馬中央バス運行）』（2026年6月1日改正）。下り〈本庄・伊勢崎方面・全日〉の東京駅八重洲南口発・バスタ新宿（新宿駅新南口）発→伊勢崎駅着 (checked 2026-10-21). They vary by time of day.

Shape

Borders 7 municipalities across 1 prefectures.

Territory of Isesaki City

Boundaries: National Land Numerical Information (Administrative Area Data), MLIT. Processed by Machigatari.Lakes: National Land Numerical Information (Lake Data), MLIT. Processed by Machigatari. Prepared with the approval of the Director-General of the Geospatial Information Authority of Japan, using its Digital Map 25000 (Spatial Data Framework) and Digital Map 25000 (Place Names and Public Facilities). (承認番号平27情使、第585号)

North to south

18.4km

Gunma Prefecture: Ota City, Maebashi City, Tamamura Town, Midori City, Kiryu City
Saitama Prefecture: Honjo City, Fukaya City

Isesaki City isthis kind of town.

01The Former Time Signal Bell Tower in Kuruwa-cho, a 14.71 m tower begun in 1915 with a donation from Kobayashi Keisuke, a Yokohama apothecary, lost its time signal to a siren in 1937
02The octagonal storehouse at the Kozuke Province Sai District granary site matches a document's entry, and Ofujiyama Kofun's stone coffin is one of two confirmed in the prefecture
03Onna-bori shows no trace of water and is thought to be unfinished, and in Sakaishima stands the home of Tajima Yahei, who perfected seiryo-iku (a World Heritage component)

See the town as it is now.

Facebookisesakicity ↗

Source: Wikidata (P2002, P2003, P2013, P2397)

If something caught your eye, ask the town itself.

Isesaki City official site ↗Wikipedia ↗

From this town's themes