Fukuoka Prefecture Iizuka has a humid subtropical climate (Köppen Cfa) characterized by warm summers and cool winters with light to no snowfall.

Rice has been cultivated in the fertile alluvial plains of the Onga River system since the Yayoi Period, and ancient kofun are scattered throughout the area.

After the Meiji restoration, the town of Iizuka was established with the creation of the modern municipalities system on April 1, 1889.

[citation needed] Iizuka has a mayor-council form of government with a directly elected mayor and a unicameral city council of 28 members.

In terms of national politics, the city is part of the Fukuoka 8th district of the lower house of the Diet of Japan, the country's legislature.

Since the coal mines closed, Iizuka City has suffered from a consistently declining population base.

Now Iizuka has a strong light industrial base and is a center for education and a rapidly expanding IT economy.