Koilwan village, Kalyanpur block | Pincode 848160

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Mapped via ECI-published constituency boundary (mandal centroid containment, Datameet)

Village snapshot

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Sarpanch · Gram Panchayat

Anita Devi

Contact: 99****5918

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LGD code: 236294
Pincode: 848160
Post office: Kalyanpur (Samastipur)
Population: 3,694
Households: 735
Literacy rate: 42%
Sex ratio: 1085 ♀/1000♂
Workers: 923

Census 2011 · in context

How Koilwan compares

By population, Koilwan ranks #29 of 153 villages in Kalyanpur mandal.

Literacy rate

42.0%

−5.3% vs mandal average

Koilwan: 42.0%
Kalyanpur mandal: 47.3%
Samastipur district: 50.3%

Sex ratio

♀ per 1000 ♂

1,085

+149 vs mandal average

Koilwan: 1,085
Kalyanpur mandal: 936

Household size

people per home

5.0

Same as the mandal average

Koilwan: 5.0
Kalyanpur mandal: 5.0

Source: Census of India 2011 (village PCA; mandal and district aggregates).

Koilwan at a glance

Koilwan is a village of 3,694 people in 735 households (Census 2011) in Kalyanpur block, Samastipur district, Bihar, the 29th-largest of 153 villages in Kalyanpur block. Literacy is 42%, 5 points below the block average of 47% and the sex ratio is 1,085 women per 1,000 men. The pincode is 848160, served by Kalyanpur (Samastipur) post office; the LGD village code is 236294. The sarpanch is Anita Devi, and the village votes in Bakhri assembly constituency, represented by MLA Sanjay Kumar. The population is estimated at 4,355 in 2026, up 18% since the 2011 Census.

Gram panchayat: Rambhadrapur →

Nearby villages compared

Compare side by side →

village	Population	Literacy	Distance
Koilwan · this village	3,694	42%	—
Ram Bhadarpur · Kalyanpur	6,443	47%	—
Gumla · Kalyanpur	905	56%	—

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About the villageA few sentences on history and livelihood
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Amenities · Census 2011 village directory · Koilwan

Treated tap water: No
Untreated tap water: No
Well water: No
Hand pump: Yes
Tube well / borewell: No
Electricity for homes: No
Electricity for farms: No
Power hours (summer): 0
Power hours (winter): 0
Primary school: 3
Middle school: 1
Secondary school: 0
Senior secondary: 0
Degree college: 0
Primary health centre: 0
Health sub-centre: 0
Community health centre: 0
Dispensary: 0
Veterinary hospital: 0
Post office: Yes
Sub post office: No
Commercial bank: No
Cooperative bank: No
ATM: No
Public bus service: No
Private bus service: No
Railway station: No
Pucca (paved) road: Yes
Anganwadi centre: Yes
ASHA worker: Yes
Fair-price shop: Yes
Mandi / regular market: No
Weekly haat: No
Nearest statutory town: SAMASTIPUR
Distance to nearest town (km): 33
Distance to district HQ (km): 33
Distance to sub-district HQ (km): 18
All-weather road: Yes
Gram panchayat (2011): RAMBHADRAPUR
Total area (ha): 341
Irrigated area (ha): 255.1
Forest area (ha): 0

Source: Census of India 2011, Village Directory. Facilities may have changed since.

Notice board · Koilwan

No notices this week

Water supply timings, gram sabha dates, camps and drives — residents post them here and they expire on their own.

Key facts — Koilwan

LGD code: 236294
Pincode: 848160
Post office: Kalyanpur (Samastipur)
Population (Census 2011): 3,694
Population (projected 2026): 4,355
Households: 735
Sex ratio (per 1,000 males): 1085
Literacy rate: 42.0%
Lok Sabha constituency: Begusarai
Vidhan Sabha constituency: Bakhri
Member of Parliament: Giriraj Singh
Member of Legislative Assembly: Sanjay Kumar
Sarpanch / Gram Pradhan: Anita Devi
Block / Mandal: Kalyanpur

Demographics — Census 2011 + 2026 estimate + NFHS-5

Population, education, health & sanitation

India's last full census was 2011 · 2026 figures are RGI projections · NFHS-5 (2019-21) covers the Samastipur district level

Then & Now

Koilwan — Census 2011 to projected 2026

Population · 2011

3,694

Census 2011 baseline

+17.9%

Population · 2026

4,355

RGI / state CAGR projection

Households · 2011

735

Census 2011 baseline

+18.0%

Households · 2026

867

RGI / state CAGR projection

2011 = decadal Census of India. 2026 = forward-projection from state-level CAGR — working estimate, refines when the next Census publishes.

Census 2011

Canonical baseline · last full census · village-level

Population: 3,694Census 2011
Households: 735Census 2011
Literacy rate: 42.0%Census 2011
Sex ratio: 1085 ♀/1000♂Census 2011

2026 estimate

Projected from 2011 + state CAGR · live ECI electorate

Est. population: 4,3552026 proj. · +17.9% vs 2011
Est. households: 8672026 projection
Active job cards: 4,20,203MGNREGA · district · Feb 2024-2025
HHs worked (FY): 2,00,630MGNREGA · district · Feb 2024-2025
State electorate: 7,71,43,046ECI Lok Sabha 2024 final roll

NFHS-5 (2019-21)

National Family Health Survey · district overlay

Sex ratio @ birth: 890NFHS-5 district
Female literacy: 54.3%NFHS-5 district
Electricity: 95.7%NFHS-5 district
Improved sanitation: 48.8%NFHS-5 district
Children vaccinated: 85.5%NFHS-5 district
Anaemia (women): 60.5%NFHS-5 district

Post-2011 updates

Central-government dashboards · sourced from data.gov.in · refreshed when the ministry publishes

Tap water at homedistrict level: 96.4%Jal Jeevan Mission · Dec 2023 · Samastipur district
Rural houses builtdistrict level: 37,22,797PMAY-G · 37,22,797 of 44,92,010 sanctioned · Mar 2025 · Samastipur district
Toilets builtdistrict level: 3,93,613Swachh Bharat Mission - Gramin · Dec 2023 · Samastipur district

Sources: Office of the Registrar General & Census Commissioner of India (Census 2011 + Population Projections 2011-2036) · International Institute for Population Sciences (NFHS-5) · Election Commission of India · data.gov.in (Jal Jeevan Mission, PMAY-G, SBM-G dashboards). Projections may differ from on-the-ground reality by ±20% for individual villages. An asterisk next to a sex-ratio value (—*) flags a Census 2011 figure outside the plausible range of 300–2000 ♀/1000♂; the underlying source row is suppressed pending review.

Boundary & surroundings

Koilwan on the mapकोइलवान

Centred on Kalyanpur mandal

~mandal

📍 Map · scroll to load

📍 25.6454° N, 86.2259° EOpen in OSM →

Same pincode

Villages sharing pincode 848160

All villages in 848160 →

From the village

Latest posts

All 6 posts →

Lead story

September 2026

newsSTATE

Monsoon retreat begins: Flood concerns persist in Bihar amid fresh rain

Reported by WION.

By Resident0 likes0 comments

Sep

newsSTATE

Bihar Cabinet approves new sugar mill at Warisaliganj

Reported by ChiniMandi.

Resident

Sep

newsSTATE

Bihar Assembly’s 5-day monsoon session begins today; supplementary budget, key bills on agenda

Reported by DD News.

Resident

Notable persons of Koilwan

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Hyperlocal & verified

Open jobs in Koilwan

Sisters apply tilak and pray for brothers' long life.

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Nov

Sama Chakeva

state

Mithila folk festival celebrating sibling bonds.

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News from Samastipur & Bihar

Recent reporting about this district and state, from the press. Headlines link to the publisher.

Monsoon retreat begins: Flood concerns persist in Bihar amid fresh rain
wionews.com19h ago
Bihar Cabinet approves new sugar mill at Warisaliganj
ChiniMandi21h ago
Bihar Assembly’s 5-day monsoon session begins today; supplementary budget, key bills on agenda
DD Newsyesterday
If the Son canal system has more water, why are Bihar’s fields still thirsty?
Counterview2 days ago
Meet the solar didis turning sunlight into a source of livelihood in rural Bihar
YourStory.com2 days ago
Rain deficit notwithstanding, Bihar achieves 99% paddy coverage
The Times of India3 days ago

Through villagers' lenses

Photo gallery

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Quick answers

People often ask about Koilwan

What is the pincode of Koilwan?

The pincode of Koilwan, Kalyanpur block, Samastipur district, Bihar is 848160. The post office is Kalyanpur (Samastipur).

Which post office delivers to Koilwan?

Mail for Koilwan is delivered through Kalyanpur (Samastipur) post office, pincode 848160, in Kalyanpur block, Samastipur district. Use the full village name and the pincode on envelopes and courier forms.

In which district is Koilwan located?

Koilwan is a village in Kalyanpur block of Samastipur district, Bihar, India.

What is the population of Koilwan as per Census 2011?

As per the 2011 Census, Koilwan village has a population of 3,694 across 735 households.

Who is the sarpanch of Koilwan?

The current sarpanch of Koilwan gram panchayat is Anita Devi.

Which Lok Sabha constituency is Koilwan in?

Koilwan falls under the Begusarai Lok Sabha constituency (PC #24) of Bihar.

Which Vidhan Sabha (assembly) constituency is Koilwan in?

Koilwan falls under the Bakhri assembly constituency (AC #147) of Bihar.

What is the literacy rate in Koilwan?

The Census 2011 literacy rate for Koilwan village is 42.0%.

What is the sex ratio in Koilwan?

The Census 2011 sex ratio for Koilwan village is 1085 females per 1,000 males.

What government schemes are applicable for residents of Koilwan?

12 schemes currently match residents of Koilwan, including Mukhyamantri Kanya Utthan Yojana, Mukhya Mantri Vridhjan Pension Yojana, Atal Pension Yojana (APY). Eligibility, benefits, and apply links are listed on the village page.

What is the LGD code of Koilwan?

The Local Government Directory (LGD) code of Koilwan village is 236294.

How big is Koilwan compared to other villages in Kalyanpur block?

Koilwan ranks 29 of 153 villages in Kalyanpur block by Census 2011 population (3,694 residents).

Who is the MLA of Koilwan?

Koilwan falls under Bakhri assembly constituency (AC 147). The sitting MLA is Sanjay Kumar (Lok Janshakti Party (Ram Vilas)).

Who is the MP for Koilwan?

Koilwan is in Begusarai Lok Sabha constituency. The sitting Member of Parliament is Giriraj Singh (BJP).

What is the population of Koilwan in 2026?

Koilwan is estimated at 4,355 people in 2026, up about 18% from 3,694 in the 2011 Census (projection from the state growth rate; the next Census will replace it).

Which agro-climatic zone is Koilwan in?

Bihar falls in the Middle Gangetic Plains zone (rice, wheat, maize, sugarcane) of the ICAR classification; Koilwan in Samastipur district shares that zone's cropping pattern and rainfall regime.

Who is the sarpanch of Koilwan?

Anita Devi is the sarpanch of Koilwan gram panchayat, Kalyanpur block. See the sarpanch list of Kalyanpur block for every gram panchayat.

Answers are auto-built from the village's verified record. If something is wrong, residents can correct it after claiming the village.

Sources & freshness

Population, literacy, households: Census 2011 (PCA)
Village directory: Local Government Directory, record updated 2026-05-09
Sarpanch: state panchayat-raj records, 2026-05-14
Mandi prices: Agmarknet via data.gov.in, 2026-09-16
Weather: OpenWeatherMap / Open-Meteo, live
Places nearby: OpenStreetMap contributors (ODbL)