By population, Udaini ranks #23 of 40 villages in Sampatchak mandal.
Source: Census of India 2011 (village PCA; mandal and district aggregates).
Udaini is a village of 1,763 people in 300 households (Census 2011) in Sampatchak block, Patna district, Bihar, the 23rd-largest of 40 villages in Sampatchak block. Literacy is 59%, 4 points above the block average of 55% and the sex ratio is 890 women per 1,000 men. The pincode is 800007, served by Gulzarbagh post office; the LGD village code is 245305. The village votes in Hayaghat assembly constituency, represented by MLA Ram Chandra Prasad. The population is estimated at 2,079 in 2026, up 18% since the 2011 Census.
Source: Census of India 2011, Village Directory. Facilities may have changed since.
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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.
Centred on Sampatchak mandal
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