More than a quarter of children are living in poverty in around nine in 10 constituencies in the North West, West Midlands and the North East.
Constituencies with the highest child poverty rates include Oldham West, Chadderton and Royton, Middlesbrough and Thornaby East and Birmingham Ladywood.
Glasgow South West has the highest rate in Scotland, while Merthyr Tydfil and Aberdare has the highest in Wales.
The findings are based on the new constituencies following boundary changes ahead of July’s election.
The research found that UK-wide three in 10 children are in poverty, which equates to nine pupils in every classroom.
The two-child limit for families reliant on benefits is a factor in high poverty rates in many constituencies, according to the study, which has been carried out by academics at Loughborough University for the End Child Poverty Coalition.
"The findings highlight how child poverty needs to be a critical election issue for candidates," said the coalition.
Tackling the issue will also benefit the economy, it added, as it cites a “shocking annual cost” of more than £39bn to the UK of high child poverty rates. This is based on increased benefits, lost economic output and lower earning potential of those who grow up in poverty.
"Child poverty is an urgent issue that demands decisive action,” said the coalition’s chair Joseph Howes, who is also chief executive of children’s charity and coalition member Buttle UK.
“The data is undeniable, too many children are in a cycle of deprivation that affects their health, education, and future prospects.
“It is time to dismantle these barriers and the election will provide a critical platform for committing to systemic changes to uplift families and give every child the opportunity to thrive."
Mark Russell, chief executive of another coalition member, The Children’s Society, said: “Too many families can’t even afford the essentials, too many parents need food banks to put food on the table, and too many children are having their futures blighted by poverty.
“We passionately believe every child deserves the best start in life, and we need decisive action from political leaders to address rising child poverty.
“The first steps the next government should take is scrapping the two-child limit and the benefits cap – these together have had a catastrophic effect, pushing many more families into deep poverty.”
Coalition youth ambassador and young mother Grace, who is 20 years old, said that “poverty has been a huge burden on my life” and hopes that “all political parties realise that poverty is real and its hard”.
“My family experienced poverty and now I live in a low-income situation,” she said.
“I couldn’t afford flooring when I moved into my property, I couldn’t afford curtains, my privacy was taken away from me. I struggle to pay my bills due to the increase in inflation.
“My daughter is now having to watch me struggle. I cannot afford to put her in childcare full-time and give her the best quality of life and education.”
