| Jainagar | |
| Other Name: | Jaynagar |
| Settlement Type: | Town |
| Pushpin Map: | India Bihar |
| Pushpin Map Caption: | Location in Bihar |
| Coordinates: | 26.5925°N 86.1372°W |
| Subdivision Type: | Country |
| Subdivision Name: | India |
| Subdivision Type1: | State |
| Subdivision Name1: | Bihar |
| Subdivision Type2: | District |
| Subdivision Name2: | Madhubani |
| Unit Pref: | Metric |
| Population Total: | 21,7820 |
| Population As Of: | 2017 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Maithili, Hindi |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 847226 |
| Area Code: | 06246 |
| Area Code Type: | Telephone code |
| Blank1 Name Sec1: | Lok Sabha constituency |
| Blank1 Info Sec1: | Jhanjharpur |
| Blank2 Name Sec1: | Vidhan Sabha constituency |
| Blank2 Info Sec1: | Khajauli |
Jainagar (also spelled as Jaynagar) is a town and a notified area of Madhubani district in the Indian state of Bihar.
As of the 2011 India census, Jainagar had a total population of 21,782. Males constituted 51% of the population and females 49%. Jainagar had an average literacy rate of 79%, higher than the national average of 74.04%. Male literacy was 86%, and female literacy was 71%. 16% of the population were under 60 years of age.[1]
Jaynagar is a border town in the Madhubani district of the Mithila region in Bihar, India. The Jaynagar Railway Station of the town is one of the major terminals in the Samastipur division of the East Central Indian Railway Zone.[2] Shilanath Mahadev Mandir at the outskirts of the town is an important place for the Hindu pilgrimage in the region.[3]