Southampton saw the highest jump among Long Island towns between July 1, 2023, and the following July, with a 0.93% growth in population estimates from 69,995 in 2023 to 70,646 the following year ...

"Some of them moved to Long Island," he said. Nassau had a natural population increase from 2023 to 2024 of 3,092, while Suffolk’s was 3,394, according to Newsday’s analysis of the estimates.