Ujiarpur

The geographic coordinates of Ujiarpur Assembly constituency are: 25°44'34.8"N 85°49'35.0"E. This constituency falls in Samastipur district of Bihar and in the Mithila region. Ujiarpur shares its borders with four other Assembly constituencies. Other Bihar Assembly constituencies adjacent to Ujiarpur are: Samastipur, Warisnagar, Bibhutipur, Sarairanjan. This constituency shares an inter-state border with .

There were a total of 307873 registered voters on the electoral rolls for the 2025 Assembly election in Ujiarpur Assembly constituency, of which 164729 were male, 143144 female and 0 of the third gender. In the 2020 Assembly elections, there were a total of 299159 registered voters, of which 159709 were male, 139444 female and 6 from the third gender. In the 2015 Assembly elections, there were a total of 265561 registered voters, of which 142248 were male, 123308 female and 314 from the third gender. In 2010 elections, there were a total of 226966 registered voters in this constituency, of which 120397 were male and 106569 female and 256 from the third gender.

The number of service voters in this Assembly constituency was 368 in 2020, 5 in 2015, and 0 in 2010.

The electorate gender ratio (number of female voters per 1000 male voters) in this constituency in 2025 was 869, in 2020 it was 873, 867 in 2015, and 885 in 2010.

Ujiarpur Assembly constituency will go to the polls in Phase 1 of the 2025 Bihar Assembly elections on Thursday, November 6, 2025. The counting of votes is on Friday, November 14, 2025.

In the 2020 state Assembly elections, this seat voted in Phase 2 on Tuesday, November 3, 2020 and the results were declared on Tuesday, November 10, 2020.

In the 2015 state Assembly elections, this seat voted in Phase 1 on Monday, October 12, 2015 and the results were declared on Sunday, November 8, 2015.

In the 2010 polls, this constituency voted in Phase 2 on Sunday, October 24, 2010 and the results were declared on Wednesday, November 24, 2010.

Assembly constituency no.134. Ujiarpur comprises of the following areas of Samastipur district in the Mithila region of Bihar: CD Block Ujiarpur; Gram Panchayats Sultanpur Ghataho, Chakbahauddin, Mokhtiyarpur Salkhani, Panr, Harishankarpur, Kewanta, Nagargama, Pagra, Nawada, Basariya & Dalsinghsarai (NA) of Dalsinghsarai CD Block.

This constituency covers an approximate area of 218.33 square kilometers and the geographic coordinates of Ujiarpur is: 25°44'34.8"N 85°49'35.0"E.

A total of four Assembly constituencies in the state of Bihar share borders with Ujiarpur constituency, which are: Samastipur, Warisnagar, Bibhutipur, Sarairanjan. This constituency shares an inter-state border with .

According to data released by the Election Commission of India, in the 2025 Bihar Assembly elections, the estimated voter turnout in this Ujiarpur constituency was 73.99%. In 2020, this seat registered a turnout of 62.09%, while it was 61.61% in 2015, and 57.63% in 2010.

In the 2020 Bihar Assembly elections, Alok Kumar Mehta of RJD won in this constituency beating Sheel Kumar Roy of BJP by a margin of 23268 votes which was 12.53% of the total votes cast. In 2015, Alok Kumar Mehta of RJD was the winner in this seat beating Kumar Anant of BLSP by a margin of 47460 votes which was 29.01% of the total votes polled in the constituency. In the 2010 Assembly elections, Durga Prasad Singh of RJD won this seat defeating Ram Lakhan Mahto of JDU by a margin of 13031 votes which was 9.96% of the total votes polled for the seat.

In the 2020 Bihar Assembly elections, Alok Kumar Mehta of RJD had a vote share of 48.81% in this seat. In the 2015 Assembly elections, Alok Kumar Mehta of RJD got a vote share of 52.24% , In the 2010 Assembly elections, Durga Prasad Singh of RJD got a vote share of 32.71% in Ujiarpur.