| Seirō | |
| Native Name Lang: | ja |
| Settlement Type: | Town |
| Pushpin Map: | Japan |
| Pushpin Map Caption: | |
| Coordinates: | 37.9745°N 139.2743°W |
| Subdivision Type: | Country |
| Subdivision Name: | Japan |
| Subdivision Type1: | Region |
| Subdivision Name1: | Chūbu (Kōshin'etsu) (Hokuriku) |
| Subdivision Type2: | Prefecture |
| Subdivision Name2: | Niigata |
| Subdivision Type3: | District |
| Subdivision Name3: | Kitakanbara |
| Leader Title: | - Mayor |
| Area Total Km2: | 37.58 |
| Population Total: | 14025 |
| 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 |
| Blank1 Info Sec1: | Japanese black pine |
| Blank2 Name Sec1: | • Flower |
| Blank2 Info Sec1: | Rosa rugosa |
| Blank3 Name Sec1: | • Bird |
| Blank Name Sec2: | Phone number |
| Blank Info Sec2: | 0254-27-2111 |
| Blank1 Name Sec2: | Address |
| Blank1 Info Sec2: | 1635-4 Suwayama, Seirō-machi, Kitakanbara-gun, Niigata-ken 957-0192 |
thumb|right|270px|Port of Niigata is a town located in Niigata Prefecture, Japan., the town had an estimated population of 14,025 in 4715 households,[1] and a population density of 373 persons per km2. The total area of the town was 37.58sqkm.
Seirō is located in central Niigata Prefecture, sandwiched between the cities of Niigata and Shibata, with a small coastline on the Sea of Japan.
Seirō has a Humid climate (Köppen Cfa) characterized by warm, wet summers and cold winters with heavy snowfall. The average annual temperature in Seirō is 13.1 °C. The average annual rainfall is 1940 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.3 °C, and lowest in January, at around 1.5 °C.[2]
Per Japanese census data,[3] the population of Seirō has grown slightly over the past 50 years.
The area of present-day Seirō was part of ancient Echigo Province. After the Meiji restoration, the area was organized as part of Kitakanbara District, Niigata. The village of Seirō was established on April 1, 1889 with the creation of the modern municipalities system. It was raised to town status in August 1977.
The local economy was formerly dependent on commercial fishing, but is now dominated by industry, notably the production of precision components and food processing. The Higashi-Niigata Thermal Power Station, a large fossil-fuel thermal power station operated by Tohoku Electric, is located in Seirō. The Port of Niigata is a major employer.
Seirō has three public elementary schools and one public middle school operated by the town government. The town does not have a high school.