Some groups of Long Islanders may have been undercounted in the 2020 census.

The Census Bureau announced Thursday that it drastically undercounted the amount of Black, Latino and Native American residents. The agency says it overcounted white and Asian residents by including some twice and counting others that it should not have.

Minerva Perez runs a Latino advocacy group called OLA, which works to increase participation in the census. She says the COVID pandemic made the job more difficult, along with President Trump administration's proposed question on citizenship, which was not on the census form.

"We're look at a wholesale undercutting of American communities because of this faulty census data," Perez says.

Perez says communities of color will underfunded because of the undercount.

"We had a lot of folks that felt that they were fully targeted, and that they wanted to participate but were very fearful of participating," Perez says.

New York lost a congressional seat after falling 89 residents short.

Residents are hoping for more accurate results in the next census.

Some advocacy groups are threatening to go to court over the issue.

The Census Bureau doesn't appear to have made any changes, but instead will use the information to plan the next census