This is a town where a post town that once died was found by the eyes of people from another country and reborn. The post town at the pass, one of the most flourishing on the Nakasendo, lost those who passed through and declined when, in the Meiji era, people and goods shifted to the railway. But a missionary who came from across the sea visited that desolate highland, found in it a coolness like the climate of his home, and opened it as a place to escape the summer heat. The declined post town gained a second life as a summer resort. Now this town has come to hold a Fiscal Capacity Index of 1.52 — a degree of self-reliance, with its own tax revenue exceeding its expenditure, that ranks among the highest in Nagano Prefecture — on the wealth of villas. Karuizawa’s numbers are the record of a town inscribed with the history of a declined post town that was found and reborn as a summer resort.
A town in the eastern part of Nagano Prefecture, on the southern foot of Mount Asama, opening west of the Usui Pass. This town has walked its history as a place where one of the most flourishing post towns on the Nakasendo declined with the Meiji railway and was found and reborn as a summer resort by a missionary from across the sea. The population has risen by more than three thousand over twenty years, from 16,181 in 2000, through 17,144 in 2005 and 19,018 in 2010, to 18,994 in 2015 and 19,188 in 2020. What I (Atlas) want to read here is not the sign "summer resort," but the causal thread: how the history — a declined post town found and reborn as a summer resort — is translated into today’s population and finances.
01 · See the present Karuizawa in its numbers
In the latest Population Census the population is about nineteen thousand (19,188 in 2020). From 16,181 in 2000, through 17,144 in 2005 and 19,018 in 2010, to 18,994 in 2015 and 19,188 in 2020, it rose by more than three thousand over twenty years. That this town has gone on increasing its population, within a Nagano Prefecture where many municipalities lose theirs, is itself striking.
Looking inside the figures, the marked figure of a town reborn as a summer resort appears. The share aged 65 and over rose from 19.6% in 2000 to 32.0% in 2020 — about twelve points over twenty years, passing three in ten. The household-with-children share is 17.2% in 2020. The employment rate is 52.2% in 2020. The Childcare Waitlist was zero in both 2024 and 2025. And the figure that stands out is the Fiscal Capacity Index, 1.52 in fiscal 2023 — far above one. This is a level whose own tax revenue covers its expenditure with room to spare, a degree of self-reliance, free of the need to depend on the local allocation tax, that ranks among the highest in Nagano Prefecture. The figure of a town found and made into a summer resort, gaining a self-reliance of finances foremost in the prefecture on the wealth of villas, appears in the numbers. Why it takes this shape cannot be read without going back over the history of a declined post town and the discovery of the summer resort.
Source: Population Census (Statistics Bureau, MIC) / Local Government Finance Survey, Fiscal Capacity Index (MIC) / Childcare Facility Status Report (Children and Families Agency) / Real Estate Information Library (MLIT)
02 · The most flourishing post town on the Nakasendo, the decline by railway, the missionary’s discovery — the history behind the numbers
A starting point as the most flourishing post town on the Nakasendo. The decline brought by the Meiji railway. And the discovery of the summer resort by a missionary who came from across the sea. The shape of Karuizawa is built of these three, laid one upon another in turn. The opening layer is the post town. In the Edo era, on this highland at the western entrance to the difficult Usui Pass, a station of the Nakasendo was set. Holding the feet of the people and goods that crossed the pass, that station — counting honjin and waki-honjin, and at its peak nearly a hundred inns, it is told — was one of the most flourishing on the Nakasendo. A station just before the difficulty of the pass: that is this town’s old foundation.
But when, in the Meiji era, people and goods shifted from the highway to the railway, the post town at the pass lost those who passed through and grew desolate. Its role as a post town ended, and the highland fell silent for a time. To that desolate highland came a turning point. One missionary who came from across the sea visited this highland, felt its cool climate to resemble that of his home, called it "a hospital without a roof," and opened it as a place to escape the summer heat. The highland of the declined post town gained a second life as a summer resort. People seeking coolness and nature built villas here as summer dwellings, and in time this town became a representative highland summer resort and villa land of Japan. A once-declined post town found by the eyes of people from another country and reborn as a summer resort — upon that history this town’s present stands.
Source: Karuizawa-juku / the most flourishing post town on the Nakasendo (Karuizawa-juku was the 18th of the 69 stations of the Nakasendo, at the western entrance to the difficult Usui Pass; it was one of the most flourishing post towns on the Nakasendo, with five honjin and waki-honjin and, at its peak, nearly 100 inns; it declined when traffic shifted to the railway in the Meiji era — overview) / Karuizawa Town / the missionary Shaw and the discovery of the summer resort (in 1885 the Canadian Anglican missionary Alexander Croft Shaw visited Karuizawa, found its cool climate akin to his home of Toronto, called it "a hospital without a roof," and opened it as a summer resort and villa land; thereafter Karuizawa became a representative highland summer resort and villa land of Japan — overview)
03 · In a town found and reborn, the population rises and self-reliance of finances is gained
What characterizes Karuizawa is that, while holding the history of a declined post town reborn as a summer resort, it has raised its population by more than three thousand over twenty years and gained a self-reliance of finances. From 16,181 in 2000 to 19,188 in 2020, the increase is nearly two-tenths. That this town has gone on adding people, within a Nagano Prefecture where many municipalities lose theirs, can be read as owing to its rebirth as a summer resort and villa land, which has ceaselessly drawn in those who build summer dwellings, those who move here after retirement, and those who take up trades tied to tourism and the villas. The cool climate — an unchanging property this highland always held — was found, after it lost its role as a highway station, as another value, that of a summer resort; that turn lies behind the rise of the population.
And the figure that stands out is the Fiscal Capacity Index of 1.52. This is a level whose own tax revenue covers its expenditure with room to spare, showing a degree of self-reliance, free of the need to depend on the local allocation tax, that ranks among the highest in Nagano Prefecture. The character of a villa land gives rise to the fixed-asset tax on the many villas and their land, and the trades of tourism and recreation have thickened the tax source. That the share aged 65 and over passed three in ten at 32.0% in 2020 is also an expression of having received, as a place of recreation, many who move here after retirement. The Childcare Waitlist was zero in both 2024 and 2025, and the household-with-children share is 17.2% in 2020. A population that keeps rising, a fiscal capacity far above one, and a rising age of the town. These three, which look scattered at first glance, all stem from the same turn: that "a declined post town was reborn as a summer resort." Take out a single indicator alone, and the image of this town does not come together.
Source: Population Census (Statistics Bureau, MIC) / Local Government Finance Survey, Fiscal Capacity Index (MIC) / Childcare Facility Status Report (Children and Families Agency)
04 · The highland of a declined post town, found in its coolness and reborn as a summer resort
Karuizawa holds several histories of its own. One is the starting point of having been, as the western entrance to the difficult Usui Pass, one of the most flourishing post towns on the Nakasendo. Another is the character that, after that station declined with the Meiji railway, its cool climate was found by a missionary who came from across the sea, and it was opened as a summer resort. And that summer resort gained, on the wealth of villas, a self-reliance with a fiscal capacity far above one. The landform of a cool, high-elevation highland on the southern foot of Mount Asama, west of the Usui Pass, gave this town both an old role — a station just before the difficulty of the highway — and a new role: a summer resort that receives those who seek the cool.
Karuizawa is a town where the highland of a declined post town was found in its coolness and became a summer resort. From the most flourishing post town on the Nakasendo, through the decline by railway and the missionary’s discovery, to a fiscal capacity of 1.52 — the geography of "the cool highland west of the Usui Pass" laid both values, the old value of a highway station and the new value of a summer resort, over this single highland. The same property of being cool was shunned as a difficulty in the age of the highway, and sought as a treasure in the age of the summer escape. The memory of the declined post town and the present of a fiscal capacity of 1.52 both lie at the two ends of that re-reading.
Source: Karuizawa-juku / the most flourishing post town on the Nakasendo (Karuizawa-juku was the 18th of the 69 stations of the Nakasendo, at the western entrance to the difficult Usui Pass; it was one of the most flourishing post towns on the Nakasendo, with five honjin and waki-honjin and, at its peak, nearly 100 inns; it declined when traffic shifted to the railway in the Meiji era — overview) / Karuizawa Town / the missionary Shaw and the discovery of the summer resort (in 1885 the Canadian Anglican missionary Alexander Croft Shaw visited Karuizawa, found its cool climate akin to his home of Toronto, called it "a hospital without a roof," and opened it as a summer resort and villa land; thereafter Karuizawa became a representative highland summer resort and villa land of Japan — overview) / Population Census (Statistics Bureau, MIC)
05 · Atlas note — it was the rupture, the death of the post town, that prepared a fiscal capacity of 1.52
Lay out Karuizawa’s numbers and the indicators of a town reborn as a summer resort line up: a population increase of more than three thousand over twenty years, an aging rate of 32.0%, a household-with-children share of 17.2%, and a fiscal capacity of 1.52. But when I (Atlas) read the numbers as a certified public accountant, what most draws my eye is the fact that the Fiscal Capacity Index is far above one. While many of the municipalities lined up along the same Nagano highlands and highway routes as in this article can cover only two or three tenths of their expenditure with their own tax revenue and depend deeply on the local allocation tax, this town, at 1.52, covers its expenditure with room to spare on its own tax revenue alone. This is a number that tells how greatly the fixed-asset tax born of the villas and their land, and the trades of tourism and recreation, have thickened the town’s tax source. Even among "highland towns," the source of that wealth differs entirely.
One more thing to weigh is the paradox that this town’s wealth stands upon the fact of "having once declined." Had this station gone on flourishing as a highway station, perhaps today’s summer resort would not exist. Precisely because it was robbed of its people and goods by the Meiji railway and died as a station, eyes seeking the cool turned to the desolate highland, and room was born for it to be reborn as a summer resort. The property of being cool, which this highland held from the first, does not change. What changed is that its coolness was re-read from a property shunned as "a difficulty of the highway" to a property sought as "a place to escape the summer." Not the property of the land itself, but how that property is re-read, changes a town’s fate — this town’s numbers show it vividly. Whether you read it past as the sign "summer resort," or see it as "the highland of a declined post town, found in its coolness and made a summer resort," changes with how the reader lives. What gave rise to a self-reliance of finances foremost in the prefecture was not the memory of a flourishing station, but the fact that the station died. Not the prosperity but its rupture prepared the present Karuizawa.
Source: Population Census (Statistics Bureau, MIC) / Karuizawa-juku / the most flourishing post town on the Nakasendo (Karuizawa-juku was the 18th of the 69 stations of the Nakasendo, at the western entrance to the difficult Usui Pass; it was one of the most flourishing post towns on the Nakasendo, with five honjin and waki-honjin and, at its peak, nearly 100 inns; it declined when traffic shifted to the railway in the Meiji era — overview) / Karuizawa Town / the missionary Shaw and the discovery of the summer resort (in 1885 the Canadian Anglican missionary Alexander Croft Shaw visited Karuizawa, found its cool climate akin to his home of Toronto, called it "a hospital without a roof," and opened it as a summer resort and villa land; thereafter Karuizawa became a representative highland summer resort and villa land of Japan — overview)
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 2026-06-02)) handled the shaping of the text. Evaluative or predictive language (such as “a good buy” or “attractive”) is intentionally left out. Revision id: wave28w_