Ishioka, Ibaraki
Ishioka 
    石岡市  | |
|---|---|
Upper: Lake Kasumigaura, Mt Tsukuba Middle: Ishioka festival, Mt Kabasan, lower: Ishioka street scene  | |
Location of Ishioka in Ibaraki Prefecture  | |
| Coordinates: 36°11′27″N 140°17′14″E / 36.19083°N 140.28722°E | |
| Country | Japan | 
| Region | Kantō | 
| Prefecture | Ibaraki | 
| Government | |
| • Mayor | Yōji Yajima (from April 2020) | 
| Area | |
 • Total  | 215.53 km2 (83.22 sq mi) | 
| Population  (January 2024)  | |
 • Total  | 70,124 | 
| • Density | 330/km2 (840/sq mi) | 
| Time zone | UTC+9 (Japan Standard Time) | 
| - Tree | Castanopsis | 
| - Flower | Lilium | 
| - Bird | Eurasian skylark | 
| Phone number | 0299-23-1111 | 
| Address | 1-1-1 Ishioka, Ishioka-shi, Ibaraki-ken 315-8640 | 
| Website | Official website | 
Ishioka (石岡市, Ishioka-shi) is a city located in Ibaraki Prefecture, Japan. As of 1 January 2024, the city had an estimated population of 70,124 in 28,892 households and a population density of 325 persons per km2. The percentage of the population aged over 65 was 33.5%. The total area of the city is 215.53 square kilometres (83.22 sq mi).