Koilwan
Koilwan is a revenue village in Kalyanpur block, Samastipur district, Bihar. It had a population of 3,694 in 735 households (Census 2011).
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3,694 souls. 735 homes.
Kalyanpur block, Samastipur district, Bihar.
Koilwan today
- Maize₹2,400Saidpurhat APMC · 10 Nov 2026
- Mustard₹6,150Saidpurhat APMC · 10 Nov 2026
- Onion₹4,550Saidpurhat APMC · 10 Nov 2026
Happy Diwali 2026 to every family of Koilwan, Kalyanpur block, Samastipur!
Diwali 2026 in Koilwan
Bihar's official 2026 holiday list: Deepawali (Diwali) on Sunday 8 November 2026; Chitragupta Puja / Bhai Dooj on Tuesday 10 November 2026.
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Koilwan at a glance
Koilwan is one of the larger villages of Kalyanpur block — 28th of 130 by population, with 3,694 people in 735 households (Census 2011). Literacy stood at 55.1%, below Samastipur district's 61.1% (Kalyanpur block: 59.2%), while the sex ratio was 1,085 women per 1,000 men, above the district's 911. It falls under Rambhadrapur gram panchayat (LGD) and uses PIN code 848160. The village covers 341 hectares — about 3.4 km², or roughly 1,083 people per km² (Census 2011).
Official dataCensus 2011 · LGD, updated 21 Oct 2026
Gram panchayat: Rambhadrapur →
Quick panchayat-at-a-glance
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Official dataCensus 2011 · LGD, updated 21 Oct 2026
- Development block
- Kalyanpur (कल्याणपुर) Source: Local Government Directory (LGD), Ministry of Panchayati Raj, as of 2026-10-29
- Self-help groups
- 0 self-help groups with 0 members (2025-26) Source: Ministry of Rural Development (DAY-NRLM), Village-wise Self Help Group and Members Count, data.gov.in (GODL-India), retrieved 2026-10-30
Gram panchayat
Koilwan is in the Rambhadrapur (रामभद्रपुर) gram panchayat.
Other villages in Rambhadrapur
Source: Local Government Directory (LGD), 2026-10-21.
How Koilwan compares
By population, Koilwan ranks #28 of 130 inhabited villages in Kalyanpur block.
Source: Census of India 2011 (village PCA; mandal and district totals of inhabited villages). Literacy = literates ÷ people aged 7+.
Official dataCensus 2011
What Koilwan had in Census 2011
- Primary school Available · 3 in the village
- Primary health centre (PHC) Not available · nearest more than 10 km away
- Treated tap water Not available
- All-weather road Available
- Public bus service Not available · nearest more than 10 km away
- Power for homes Not available
- Commercial bank Not available · nearest more than 10 km away
- Mobile phone coverage Available
Census 2011 Village Directory — conditions may have changed since.
Page completeness · 1/5
- Photo
- History & about
- Sarpanch verified
- Festival or jatara
- School information
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Add what you know →Notice board · Koilwan
No notices this weekWater supply timings, gram sabha dates, camps and drives — residents post them here as announcements.
Villages sharing pincode 848160
Other villages in Kalyanpur block
View all 179 →Koilwan — Census 2011 to estimated 2026
Estimate for 2026 (scaled from Census 2011 by the state's official RGI projection; not a census count)
Method: the Census 2011 count × Bihar's projected population growth from 2011 to 2026 (+27.1%), from the official projections of the Technical Group on Population Projections (National Commission on Population, MoHFW, with the Registrar General of India), Table 21. The report projects no households, so households use the same ratio. Rounded; a single village can differ widely from its state's average. The next Census will replace these figures.
Population Projections for India and States 2011–2036 (nhm.gov.in, PDF) · Table 21 · checked on 2026-10-26
Population, education & work
- Population
- 3,694Census 2011
- Male / female
- 1,772 / 1,922
- Households
- 735
- People per home
- 5.0
- Literacy rate
- 55.1%literates ÷ people aged 7+
- Workers
- 923
- Work participation
- 25.0%workers ÷ population
Source: Office of the Registrar General & Census Commissioner, India — Census 2011 Primary Census Abstract.
Official dataCensus 2011
Koilwan on the map
The pin is an approximate location, within about 8 km, from India Post PIN code data — not the exact site of Koilwan. Exact coordinates come from OpenStreetMap once the village is mapped there.
Koilwan · 25.8630° N, 85.7810° E
Electoral profile
We can't yet place Koilwan in a Lok Sabha or assembly constituency reliably — we need its map location, or more mapped villages around it. How constituencies are placed
Latest posts from the village
No posts from this village yet. Be the first villager to add one.
Write a postEssential services & places near Koilwan
Koilwan isn't on our map yet, so we can't measure distances. These places are in Kalyanpur block, placed there by the nearest mapped village.
Banks, ATMs & post offices578 in Samastipur district
Bank · No map location — listed by district
DISTEAST CHAMPARAN,BIHAR 848302
Post office
Post office
Hospitals & clinics119 in Samastipur district
Schools & anganwadis6 in Samastipur district
Colleges & universities10 in Samastipur district
Police & fire stations2 in Samastipur district
Revenue & panchayat offices1 in Samastipur district
Government offices6 in Samastipur district
Temples8 in Samastipur district
Other places of worship1 in Samastipur district
Transport31 in Samastipur district
Agriculture services3 in Samastipur district
Community places3 in Samastipur district
All places in Kalyanpur block (8) →Places of worship in Koilwan →Suggest a missing place
Data © OpenStreetMap contributors (ODbL). Not checked by VoiceOfVillage unless marked verified. Phone numbers and hours appear only when the source lists them; call before you travel. openstreetmap.org/copyright Bank branches: RBI IFSC lists (via github.com/razorpay/ifsc, public domain). Post offices: India Post, All India Pincode Directory (data.gov.in, GODL-India).
People often ask about Koilwan
Where is Koilwan located?
Koilwan is a village in Kalyanpur block of Samastipur district, Bihar, India.
Which district is Koilwan in?
Koilwan is in Samastipur district of Bihar.
Which gram panchayat does Koilwan belong to?
Koilwan comes under the Rambhadrapur gram panchayat.
What is the pincode of Koilwan?
The pincode of Koilwan, Kalyanpur, Samastipur is 848160.
What is the population of Koilwan?
As per the 2011 Census, Koilwan had a population of 3,694 (1,772 males and 1,922 females).
How many households are there in Koilwan?
Koilwan had 735 households at the 2011 Census.
What is the area of Koilwan?
Koilwan covers about 341 hectares.
What is the literacy rate of Koilwan?
The literacy rate of Koilwan was 55.1% at the 2011 Census (share of people aged 7 and above who are literate).
What is the sex ratio of Koilwan?
Koilwan had 1,085 females per 1,000 males at the 2011 Census.
Which development block is Koilwan in?
Koilwan is in the Kalyanpur (कल्याणपुर) development block (Local Government Directory).
What is the LGD code of Koilwan?
The Local Government Directory (LGD) code of Koilwan is 236294 and its Census 2011 village code is 236294.
Which villages are near Koilwan?
Villages near Koilwan include Samastipur (within ~8 km), Jitwarpur Chauth (within ~8 km), Ujiarpur (about 9.5 km), Morwa (about 12 km), Kerai (about 16 km).
What is the population of Koilwan in 2026?
No census has been taken since 2011. Scaling Koilwan's Census 2011 population of 3,694 by Bihar's official RGI projection (+27.1% from 2011 to 2026) gives an estimate of about 4,690 people in 2026. This is an estimate, not a census count; the next Census will replace it.
Who is the sarpanch of Koilwan?
The sarpanch of Koilwan has not yet been verified on VoiceOfVillage. We publish a sarpanch's name only after they verify with an election certificate; until then the elected sarpanch is listed on the eGramSwaraj portal, by the State Election Commission and at the panchayat or block office.
Answers are built from the village's official records (LGD, Census 2011, Election Commission data). If something is wrong, verified residents can correct it after claiming.
- Population, literacy, households: Census 2011 (PCA)
- Village directory: Local Government Directory, record as of 2026-10-21
- Pincode: LGD village–pincode mapping and India Post
- Weather: Open-Meteo, live model estimate
- 2026 estimates: Census 2011 × the state's growth in the RGI / National Commission on Population projections 2011–2036 (Table 21)
- Places nearby: OpenStreetMap contributors (ODbL), RBI IFSC lists, India Post
- Sarpanch: shown only when a sarpanch has verified with an election certificate (none for this village yet)
- Report a correction
What do you need to find near Koilwan?
- Hospital
- PHC / clinic
- Pharmacy
- School
- Bank
- ATM
- Post office
- Market
- Police
- Petrol bunk
- Bus stop
- Railway station
Opens an OpenStreetMap search. Results come from OpenStreetMap contributors and may be incomplete.
Pacific Ocean status (NOAA, 8 Oct 2026): El Niño Advisory
There is no El Niño forecast for individual villages. El Niño is a pattern in the Pacific Ocean; how much it changes rainfall here also depends on other conditions, and it does not mean drought everywhere.
Local rainfall estimates are not available yet.
Long-term district average for November: 6.9 mm (IMD normal, 1951–2000)
Not a weather forecast. For forecasts and warnings, follow IMD and official alerts.
District climate page →Latest reports from markets in Samastipur district, within the last 14 days.
Latest reports up to 10 Nov 2026. Prices in ₹ per quintal.
| Commodity | Market | Min | Max | Modal | Date |
|---|---|---|---|---|---|
| Maize · Deshi Red | Saidpurhat APMC | 2,350 | 2,450 | 2,400 | 10 Nov 2026 |
| Mustard · Big 100 Kg | Saidpurhat APMC | 6,100 | 6,200 | 6,150 | 10 Nov 2026 |
| Onion · 1st Sort | Saidpurhat APMC | 4,500 | 4,600 | 4,550 | 10 Nov 2026 |
| Paddy(Common) · Bangarakaddi | Saidpurhat APMC | 2,350 | 2,450 | 2,400 | 10 Nov 2026 |
| Potato · Red Nanital | Saidpurhat APMC | 1,200 | 1,300 | 1,250 | 10 Nov 2026 |
| Wheat · 147 Average | Saidpurhat APMC | 2,500 | 2,600 | 2,550 | 10 Nov 2026 |
| Bottle gourd · Bottle Gourd | Tajpur APMC | 2,800 | 3,000 | 2,900 | 9 Nov 2026 |
| Cauliflower · African Sarson | Tajpur APMC | 600 | 800 | 700 | 9 Nov 2026 |
Source: AGMARKNET, Directorate of Marketing & Inspection, via data.gov.in (Government Open Data Licence – India). All markets →
These are wholesale mandi (APMC) prices in ₹ per quintal as reported to AGMARKNET — not the retail price in Koilwan's shops. Best mandi price near Koilwan →
Official dataAgmarknet, 10 Nov 2026
Distances are approximate (India Post PIN code data).
All villages near Koilwan →Compare Koilwan with… →All villages in Kalyanpur →