Most densely populated municipalities

The 20 municipalities in Fukuoka Ken with the highest people per km², and the 20 with the lowest, out of 40 with a published figure.

	Municipality	Prefecture	Postal code	People per km²
1	Kasuga	Fukuoka Ken	816-0845	7,938.9 /km²
2	Ōnojō-shi	Fukuoka Ken	816-0951	3,778.5 /km²
3	Kasuya	Fukuoka Ken	811-2208	3,395.7 /km²
4	Nakama	Fukuoka Ken	809-0024	2,483.3 /km²
5	Dazaifu	Fukuoka Ken	818-0124	2,447.0 /km²
6	Kitakyūshū	Fukuoka Ken	804-0003	1,917.3 /km²
7	Koga	Fukuoka Ken	811-3122	1,410.7 /km²
8	Ōmuta-shi	Fukuoka Ken	836-0825	1,351.2 /km²
9	Kurume	Fukuoka Ken	830-1126	1,317.0 /km²
10	Ogori	Fukuoka Ken	838-0124	1,281.5 /km²
11	Fukutsu	Fukuoka Ken	811-3224	1,246.6 /km²
12	Chikushino	Fukuoka Ken	818-0058	1,176.2 /km²
13	Chikugo	Fukuoka Ken	833-0027	1,165.9 /km²
14	Fukuoka Prefecture	Fukuoka Ken	812-8551	1,027.6 /km²
15	Yukuhashi	Fukuoka Ken	824-0044	1,015.6 /km²
16	Ōkawa-shi	Fukuoka Ken	831-0023	969.6 /km²
17	Nōgata-shi	Fukuoka Ken	822-0017	901.7 /km²
18	Tagawa	Fukuoka Ken	824-0602	842.7 /km²
19	Onga	Fukuoka Ken	811-4211	840.5 /km²
20	Yanagawa	Fukuoka Ken	832-0067	831.1 /km²

Most sparsely populated municipalities

	Municipality	Prefecture	Postal code	People per km²
1	Seto	Fukuoka Ken	820-0604	0.0 /km²
2	Miyako	Fukuoka Ken	824-0113	40.4 /km²
3	Takahashi	Fukuoka Ken	830-0422	52.7 /km²
4	Yame	Fukuoka Ken	834-0083	124.8 /km²
5	Chikujō-machi	Fukuoka Ken	829-0341	142.7 /km²
6	Miyawaka	Fukuoka Ken	822-0146	190.7 /km²
7	Asakura	Fukuoka Ken	838-0214	199.6 /km²
8	Buzen	Fukuoka Ken	828-0047	219.2 /km²
9	Mikawa	Fukuoka Ken	830-1203	226.8 /km²
10	Ukiha	Fukuoka Ken	839-1394	233.7 /km²
11	Kama	Fukuoka Ken	820-0331	260.5 /km²
12	Miyama	Fukuoka Ken	835-0113	339.3 /km²
13	Kurate	Fukuoka Ken	807-1313	418.6 /km²
14	Itoshima	Fukuoka Ken	819-1193	456.8 /km²
15	Iizuka	Fukuoka Ken	820-0085	589.5 /km²
16	Keisen	Fukuoka Ken	820-0600	639.3 /km²
17	Nakagawa	Fukuoka Ken	811-1233	669.2 /km²
18	Tachiarai	Fukuoka Ken	830-1200	673.7 /km²
19	Ōki-machi	Fukuoka Ken	830-0400	750.9 /km²
20	Munakata	Fukuoka Ken	811-3514	809.1 /km²

Most densely populated municipalities — All of Japan

One row per municipalities. The figures are published by municipality, so every postal code inside one shares them; the postal code shown is one of that municipality's.