Without turning a tap, water springs up of itself from the ground — there are said to be some three thousand such wells about the city. Water that fell on Mount Ishizuchi passes through the depths of the earth and wells up in the town. Saijo’s numbers are the record of a town that opened upon self-springing water.
A city of water that opens upon the northern foot of Mount Ishizuchi in the east of Ehime Prefecture. The population, spanning a merger, moved from about 113,000 in 2005 to 104,791 in 2020. What I (Atlas) want to read here is not the tourist image "a village of famous water," but the causal thread: how the history — the spring water, the festival, the merger — is translated into today’s number of children and aging.
01 · Tracing the present Saijo in its numbers
In the latest Population Census the population is about 105,000 (104,791 in 2020). What to note first here is that the surge of more than fifty-five thousand, from 58,110 in 2000 to 113,371 in 2005, is not the result of people naturally increasing. It is from the new merger in 2004 of the former Saijo City and a surrounding city and two towns, and the step in the numbers mirrors that merger. The former Saijo City before the merger was about sixty thousand; becoming one with the surroundings, both the city area and the population widened at a stroke.
Upon that, looking at the post-merger content, it fell from 113,371 in 2005 to 104,791 in 2020, by more than eight thousand five hundred over fifteen years. Those under 15 also fell by about 3,300, from 16,199 in 2005 to 12,925 in 2020. The share aged 65 and over rose from 21.4% in 2000 to 32.8% in 2020. The household-with-children share was 19.8% (2020), the Childcare Waitlist has been zero in recent years, and the Fiscal Capacity Index was 0.61 in fiscal 2023. The figure of a city of water, widened by the merger, gently losing population and adding years, appears in the numbers. Why it takes this shape cannot be read without going back over the history of the spring water and the festival.
Source: Population Census (Statistics Bureau, MIC) / Real Estate Information Library (MLIT) / Local Government Finance Survey (MIC) / Childcare Facility Status Report (Children and Families Agency)
02 · The spring water, the festival, the merger — the history behind the numbers
Saijo’s skeleton is set by water that springs up of itself from the ground here and there about the city. This self-springing groundwater is called "uchinuki" locally. The center of Saijo lies upon a rich belt of subsurface flow sourced in the Ishizuchi range, and wells where water springs up naturally just by driving a pipe into the ground are said to number about three thousand in the city. Their daily volume reaches about ninety thousand cubic meters, and this water has been chosen for the nation’s 100 Famous Waters. Water springing up of itself — this advantage of the land has been the foundation of the town’s life and industry.
The festival that put down roots in this city of water is the autumn "Saijo Festival." This festival, in which gorgeous floats called danjiri parade through the town, derives from the autumn rites of the shrines of the former Saijo City area before the merger, and has continued as a yearly event of the region. A life raised on a land blessed with abundant water appears in the form of such rites.
This area was, in early-modern times, also the castle town of the Saijo domain. And what decided the present form of the city was the Heisei merger. In 2004 the former Saijo City, Toyo City, Komatsu Town and Tanbara Town merged anew, widening to the present city area that gathers the whole northern foot of Mount Ishizuchi. Beginning as a city of self-springing water, known for the danjiri festival, and widened by the merger — this town’s shape stands upon the history of spring water and a festival.
Source: Saijo City (Saijo’s famous water, "uchinuki") / Ministry of the Environment, 100 Famous Waters (Ehime, Saijo City, uchinuki) / Saijo City / the Saijo Festival (history, uchinuki, the Saijo domain, the danjiri, the merger — overview)
03 · In a widened city area, the city of water gently grows old
What characterizes Saijo is that, after the city area widened through the merger, the population falls gently and aging passes three in ten. Over the fifteen years after the merger the total fell by more than eight thousand five hundred, and those under 15 also fell by about 3,300. Against the backdrop of an industrial agglomeration along the Seto Inland Sea, though not a steep drop, the thinning of births and the outflow of the young generation work quietly — a form of shrinking common to regional cities.
The living-infrastructure numbers also mirror this transition. The elementary schools jumped from ten to twenty-six with the 2004 merger, as the school networks of the combined cities and towns were bundled together just so. After that they fell slightly in step with the falling number of children, and in recent years have moved around twenty-five. The school network dispersed across the widened city area is, broadly, held. The Childcare Waitlist has been zero in recent years. The town, known as a city of self-springing water and prospering on the danjiri festival, now gently loses population in the city area widened by the merger. The total falls gently, children fall, and aging passes three in ten. The population that jumped at a stroke with the merger, and the school network reorganized afterward. The road the self-springing city of water has walked after the merger is engraved in these numbers.
Source: School Basic Survey (MEXT) / Childcare Facility Status Report (Children and Families Agency) / Population Census (Statistics Bureau, MIC)
04 · A town where, without turning a tap, water comes from the ground
Saijo’s life stands upon water that springs up of itself from the ground. One is the groundwater blessing called "uchinuki," with few other parallels, where the subsurface flow of the Ishizuchi range springs up of itself in the city. About three thousand self-springing wells are scattered about the city, supporting the water of life and industry. Another is the danjiri of the autumn "Saijo Festival" that put down roots in that city of water, conveying the form of the region’s life and faith.
This terrain — where water that fell on Mount Ishizuchi passes through the depths of the earth and wells up in the town — scattered about three thousand self-springing wells across the city, raised the danjiri festival upon that abundant water, and in 2004 bundled the whole northern foot of Mount Ishizuchi into a single city. Water springing from the ground without turning a tap still moistens Saijo’s life and industry.
Source: Saijo City / the Saijo Festival (history, uchinuki, the Saijo domain, the danjiri, the merger — overview) / Saijo City (Saijo’s famous water, "uchinuki")
05 · Atlas’s note — the numbers of a self-springing city of water
Lay out Saijo’s numbers and the indicators of the shrinking a regional city along the Seto Inland Sea traces line up: a gentle post-merger fall of population, falling children, aging past three in ten, and a fiscal capacity of 0.61. But with the eye that first distinguishes a step arising from the recombination of a consolidation, what I want to be most careful about here is not to read the surge from 2000 to 2005 just so as "a town where people gather." The true nature of the step is the 2004 new merger, and it is merely the former Saijo City of about sixty thousand becoming one with its surroundings. To see the trend as a single city, the proper reading is from 2005 onward, after the merger, and there it falls gently.
A Fiscal Capacity Index of 0.61 is a number within a structure widely seen in regional cities — covering about six-tenths of expenditure with its own tax revenue and supplementing the shortfall with the local allocation tax and the like. It can be read that the industrial agglomeration along the Seto Inland Sea has left a certain thickness in the tax base. Some three thousand wells open their mouths about the town, and the groundwater pushing up moistens life and industry. Before turning a tap, water comes up from the ground. In autumn, the danjiri sway and parade through that city of water. Just before the figure of population shrinks gently, the not-so-ordinary ordinary of water welling from the ground still fills Saijo’s every day.
Source: Population Census (Statistics Bureau, MIC) / Saijo City / the Saijo Festival (history, uchinuki, the Saijo domain, the danjiri, the merger — overview) / Saijo City (Saijo’s famous water, "uchinuki")
Editor’s note: all figures and sources are drawn from official statistics. The prose follows Atlas’s voice, and AI (atlas-handcrafted-reverse-v1 (Daiki 2026-05-29)) handled the shaping of the text. Evaluative or predictive language (such as “a good buy” or “attractive”) is intentionally left out. Revision id: wave8f_9