Of the 2,078 people interviewed, 63 percent said they would observe Easter in church, the poll conducted March 24-31 for the Knights of Columbus by the Marist College Institute for Public Opinion found.
Of the 521 Roman Catholics interviewed, 74 percent said they will be in church Easter Sunday, said the Knights of Columbus, a Roman Catholic fraternal service group.
Of those interviewed, 86 percent overall and 89 percent of Roman Catholic Americans correctly identified Easter as the celebration of the resurrection of Jesus, the group said.
"This data shows very clearly that Americans and American Catholics have a very deep-rooted faith," said Supreme Knight Carl Anderson.
The poll had an overall margin of error of 2.5 percent, the institute said.
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