| Ojiya | |
| Native Name Lang: | ja |
| Settlement Type: | City |
| Pushpin Map: | Japan |
| Pushpin Map Caption: | |
| Coordinates: | 37.3144°N 138.7951°W |
| Subdivision Type: | Country |
| Subdivision Name: | Japan |
| Subdivision Type1: | Region |
| Subdivision Name1: | Chūbu (Kōshin'etsu) (Hokuriku) |
| Subdivision Type2: | Prefecture |
| Subdivision Name2: | Niigata |
| Leader Title: | Mayor |
| Area Total Km2: | 155.19 |
| Population Total: | 34704 |
| Population As Of: | July 1, 2019 |
| Population Density Km2: | auto |
| Timezone1: | Japan Standard Time |
| Utc Offset1: | +9 |
| Blank Name Sec1: | Symbols |
| Blank Info Sec1: | |
| Blank1 Name Sec1: | • Tree |
| Blank2 Name Sec1: | • Flower |
| Blank2 Info Sec1: | Narcissus |
| Blank3 Name Sec1: | • Fish |
| Blank3 Info Sec1: | Japanese carp |
| Blank Name Sec2: | Phone number |
| Blank Info Sec2: | 0250-62-2510 |
| Blank1 Name Sec2: | Address |
| Blank1 Info Sec2: | 2-7-5 Jonai, Ojiya-shi, Niigata-ken 947-8501 |
is a city located in Niigata Prefecture, Japan., the city had an estimated population of 34,704 in 12,758 households,[1] and a population density of 224 persons per km². The total area of the city was 155.19sqkm.
Ojiya is located in an inland region of central Niigata Prefecture at the southern end of the Echigo Plain. The Shinano River flows through the city. The area has very heavy snow in winter.
Ojiya has a Humid climate (Köppen Cfa) characterized by warm, wet summers and cold winters with heavy snowfall. The average annual temperature in Ojiya is 12.6 °C. The average annual rainfall is 2263 mm with September as the wettest month. The temperatures are highest on average in August, at around 25.8 °C, and lowest in January, at around 0.5 °C.[2]
Per Japanese census data,[3] the population of Ojiya has declined over the past 40 years.
Ojiya has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 16 members.
Ojiya is known as the birthplace of Nishikigoi carps, along with Yamakoshi.