Along this city’s shore there is a quarter where a narrow waterway — neither quite a river nor quite a canal — threads through the town, and old houses and fishing boats line both its banks. It is what remains of a port town where the cargo ships that plied the northern sea once called, and from the townscape mirrored on the water’s face it is sometimes likened, across the sea, to a water city of the other shore. In 2005 this port town became one with several neighboring municipalities to form the present city. The city, opening onto the shore, has held its population gently since the merger. Imizu-shi’s numbers are the record of a town inscribed with the history of the kitamaebune port and the merger of five municipalities.
A city in the central part of Toyama Prefecture, opening onto the shore facing Toyama Bay. Because this city was formed in 2005 when a shoreline port town and its neighboring municipalities newly became one, the statistics begin from 2010, after the city’s inception. The population has gently fallen from 93,588 in 2010 to 90,742 in 2020. What I (Atlas) want to read here is not the sign “a city in greater Toyama,” but the causal thread: how the history — the kitamaebune port town and the merger of five municipalities — is translated into today’s population and finances.
01 · See the present Imizu-shi in its numbers
In the 2020 Population Census the population is 90,742. Because this city was formed in 2005 when its neighboring municipalities newly became one, the population statistics as a city begin from 2010, after its inception. From 93,588 in that year of 2010, through 92,308 in 2015 to 90,742 in 2020, it has gently fallen.
Looking inside the figures, the figure of a city opening onto the shore appears. The share aged 65 and over rose from 23.9% in 2010 to 30.6% in 2020, passing three in ten. The household-with-children share, at 24.2% in 2020, is held for a city losing population, and the Childcare Waitlist was zero in both 2024 and 2025. The Fiscal Capacity Index was 0.64 in fiscal 2023 — a level whose own tax revenue covers about two-thirds of expenditure, in the middle range. The numbers show a city that includes a kitamaebune port town gently losing population and deepening in age after the merger. Why it takes this shape cannot be read without going back over the history of the port town and the merger.
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 kitamaebune canal port town, the shoreline living, the merger of five municipalities — the history behind the numbers
What makes Imizu up is a kitamaebune port town opening onto the shore, and the merger that made the neighboring municipalities, including that port town, one. The opening layer is the port town. Along this city’s shore there is a narrow waterway threading through the town, with old houses and fishing boats lining both its banks. It was a port town where, of old, the cargo ships that plied the northern sea called, and from the townscape mirrored on the water’s face it is sometimes likened, across the sea, to a water city of the other shore. A port town that made the sea and the waterway its place of livelihood stood at the heart of this town’s shore.
Upon this port town the city’s inception was laid. In 2005 the shoreline port town and the neighboring towns of Kosugi, Daimon and Oshima and the village of Shimo newly became one, and the present city was formed. That several municipalities, including the shoreline port town, were bound together into a single city is this city’s making. The city, opening onto the shore, has walked together with fisheries and the trades tied to a port open onto the bay, within the advantage of facing Toyama Bay. The canal port town where the kitamaebune called, the shoreline living, and the merger of five municipalities — the history of a port town and a merger that the shoreline land facing Toyama Bay held lies at the foundation of today’s Imizu.
Source: Imizu City / Uchikawa (a port town that flourished as a port of call for the kitamaebune; a canal linking to Toyama Shinko with fishing boats lining both banks — overview) / Shinminato City (the 2005 merger with four municipalities of Imizu County forming Imizu City; the Shinminato district of Imizu — overview) / Imizu City (the 2005 new merger of Shinminato City with Kosugi, Daimon, Oshima towns and Shimo village of Imizu County — overview)
03 · On the shore, what falls and what is held balance out
What characterizes Imizu-shi is that, while holding the history of a city that includes a kitamaebune port town, it has gently lost population and is deepening in age after the merger. From 93,588 in 2010, two years after the city’s inception, to 90,742 in 2020, it lost about three thousand over ten years. Even in this city opening onto the shore, a part of the younger generation can be read as having moved to the larger nearby cities, and the age of the whole town as having risen. That the share aged 65 and over rose from 23.9% in 2010 to 30.6% in 2020, passing three in ten, is one expression of this.
On the other hand, the Childcare Waitlist was zero in both 2024 and 2025. The household-with-children share, at 24.2% in 2020, is held for a city losing population. A Fiscal Capacity Index of 0.64 is a level whose own tax revenue covers about two-thirds of expenditure, in the middle range. The income of households living on the shore and the trades tied to a port open onto the bay can be read as holding the tax source at the middle range. Population gently falls, aging passes three in ten, and yet the household-with-children share and the stamina of finances are both held at the middle range — that what falls and what is held balance out neatly is the figure of Imizu, opening onto the shore, in its numbers. Take out only the decline of population, and the ground strength of this city facing Toyama Bay does not come into view.
Source: Population Census (Statistics Bureau, MIC) / Local Government Finance Survey, Fiscal Capacity Index (MIC) / Childcare Facility Status Report (Children and Families Agency)
04 · Around a kitamaebune port town, five municipalities were woven
Imizu holds several functions of its own. One is the history of a kitamaebune port town, where old houses and fishing boats line both banks of the narrow waterway threading through the town. Another is the character of having held its population on the shore since 2005, when that port town and the neighboring towns of Kosugi, Daimon and Oshima and the village of Shimo newly became one. And the shoreline landform facing Toyama Bay gave this city its port town and the port open onto the bay.
Imizu is a town where a kitamaebune port town became a single city together with five municipalities. From the kitamaebune canal port town, through the shoreline living and the merger of five municipalities, to the holding of the population on the shore — the geography of “shoreline land facing Toyama Bay” set the port town, and bound the surrounding municipalities together into a city. With the waterway port town where the kitamaebune called as its core, the four neighboring municipalities were stitched together in 2005 — on the shore facing Toyama Bay, the memory of the port and the outline of a new city are laid over each other on a single sheet.
Source: Imizu City / Uchikawa (a port town that flourished as a port of call for the kitamaebune; a canal linking to Toyama Shinko with fishing boats lining both banks — overview) / Shinminato City (the 2005 merger with four municipalities of Imizu County forming Imizu City; the Shinminato district of Imizu — overview) / Imizu City (the 2005 new merger of Shinminato City with Kosugi, Daimon, Oshima towns and Shimo village of Imizu County — overview)
05 · Atlas note — the meaning of the statistics beginning from 2010
Lay out Imizu’s numbers and the indicators of a city opening onto the shore line up: a gently falling population, an aging rate of 30.6%, a household-with-children share of 24.2%, fiscal capacity of 0.64. Because as a certified public accountant I (Atlas) am of the disposition to first check where the statistics come from, what I want to read here is this city’s very making — that “five municipalities became one and were newly born in 2005.” That this city’s statistics begin from 2010 is because the city did not exist before that; it mirrors not a step or a gap in population but the very inception of the city. A shoreline port town and several neighboring municipalities were bound together into a single city. The structure of several regions of differing origins becoming one municipal area can be read as one example of the mergers of municipalities that advanced across the country in the Heisei era.
One more thing to weigh is that at one of this city’s centers stands a kitamaebune canal port town. The scene of old houses and fishing boats lining both banks of the narrow waterway threading through the town is what remains of the cargo ships that once plied the northern sea calling here, and of the sea and the waterway having been a place of livelihood. The memory of a port town that flourished by sea trade still lies in the townscape along the waterway. That a city bound together with a kitamaebune port town as one of its cores is now holding its population gently on the shore while deepening in age is something proper to this town. Old houses and fishing boats line both banks of the narrow waterway threading through the town — what remains of the age when the kitamaebune called still mirrors on the water’s face of the port town. That this city’s statistics begin from 2010 is not because there is a gap in the population. It is because, until five municipalities newly became one in 2005, this city did not yet exist. Regions of differing origins were bound into a single municipal area, and on the shore the population is gently held. Which of the two draws you — the face of the old waterway port town, or the face of the new city facing Toyama Bay — changes the weight of what it means to live here.
Source: Population Census (Statistics Bureau, MIC) / Imizu City / Uchikawa (a port town that flourished as a port of call for the kitamaebune; a canal linking to Toyama Shinko with fishing boats lining both banks — overview) / Shinminato City (the 2005 merger with four municipalities of Imizu County forming Imizu City; the Shinminato district of Imizu — overview) / Imizu City (the 2005 new merger of Shinminato City with Kosugi, Daimon, Oshima towns and Shimo village of Imizu County — 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: wave20_b