Quick facts
Kawaguchi overview
Kawaguchi (orange) and the other large cities of Japan
Kawaguchi lies in Saitama in Japan at 35.81°N, 139.71°E, about 6 m above sea level. The local time zone is Asia/Tokyo (UTC+9); GeoNames classifies it as a district seat.
It is smaller than Shizuoka (693,389) and larger than Kagoshima (595,049). The largest city in Japan is Tokyo with 9,733,276 people and is also the capital.
The national capital, Tokyo, is about 13 km away; the nearest large city is Shimotoda, 3 km from Kawaguchi.
Japan as a whole has a live population of 122,212,067 (-0.6% a year) and ranks #12 of 238 countries — see the Japan population page for the full statistics and the Japan atlas for provinces, terrain and society maps.
Cities near Kawaguchi
Largest cities in Japan
Frequently asked questions
What is the population of Kawaguchi?
Kawaguchi has about 607,373 inhabitants according to the latest official census or estimate compiled by GeoNames. This is the city proper; the metropolitan area is larger.
Is Kawaguchi the capital of Japan?
No. The capital of Japan is Tokyo (9,733,276 people), about 13 km away. Kawaguchi is the 22nd largest city of the country and a district seat.
How big is Kawaguchi compared with the rest of Japan?
Its 607,373 residents are 0.5% of the 122,212,067 people living in Japan today. Tokyo is larger with 9,733,276 people.
Where is Kawaguchi?
In Saitama, Japan, at latitude 35.81 and longitude 139.71, 6 m above sea level. Nearby large cities include Shimotoda (3 km), Sōka (9 km), Asaka (10 km).
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Cite or link to this page
Glostats. (2026). Kawaguchi Population 2026 — Japan. Retrieved October 25, 2026, from https://glostats.com/cities/japan/kawaguchi/<a href="https://glostats.com/cities/japan/kawaguchi/">Kawaguchi Population 2026 — Japan</a> — GlostatsFigures on this page may be quoted, charted or republished as long as the page is credited with a link. Terms · Download the data as CSV · Embed a live counter.
City populations are GeoNames figures (CC BY 4.0): the latest official census or estimate for the city proper — the municipality, not the wider metropolitan area — so they can differ from "metro area" numbers you see elsewhere. Country populations are live Glostats estimates from the UN World Population Prospects. Distances are great-circle distances between city centres. Page generated 2026-10-25. More about our data.