Where Japan’s wineries are found

The distribution of verified producers The table below shows the prefectural distribution. “Listed producers” means producers confirmed to be in that prefecture and recorded within this site’s scope. It is not a count of every winery in the prefecture or a measure of industry size. Read the figures as the distribution that could be verified.

“Information complete” means that a street-level address, visit information, and varieties could all be confirmed. A missing field does not deny a producer’s existence or the value of its wine. Read each column as a separate statement about what has been checked.

A large prefectural count does not necessarily mean that every entry is complete. Conversely, a smaller prefectural group may contain pages with the relevant details. The separate columns keep distribution and depth of verification from being treated as the same thing.

How to read the columns “Region label present” does not mean that the editorial team drew boundaries from a map. It is used only where a classification actually used by a public institution or other authority could be confirmed. This is why the column can be smaller than the producer column: it avoids adding an unsupported region label.

Address, visits, varieties, and region classification are different facts. Keeping them in separate columns preserves what is known and what is not yet known instead of compressing everything into one label.

After viewing a prefectural distribution, open a producer page to break a row back into its individual sources. This lets you distinguish an address-only confirmation from one that also covers visits and varieties, using the table as a practical starting point for deeper checking.

Separate the count from reality Our reading: A prefecture with more listed producers may also have more producers who publish information. Those are related but different facts. Visible entries, actual activity, and ease of public disclosure should be read separately.

To explore by prefecture, use the table to find candidates, then check the address and visit details on each producer page. Do not infer a region label from a place name; follow the source attached to it. For varieties or awards, use the prefectural view as a starting point and continue to the individual wine and its source.