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Market insights · New York

Nassau County, NY: growth, migration and housing

Nassau County has 1,398,939 residents, up 0.6% since 2020 (+0.1% in the last year). In 2022–2023, 26,522 households moved in and 32,906 moved out (-6,384 net), while a net $682.5M of income left. Median household income is $146,202, the median home $684,700 and median rent $2,252 a month.

Population (2025)1,398,939
5-year growth+0.6%
1-year growth+0.1%
Net households moving in-6,384
Per 1,000 residents-4.6
Net income moving in-$682.5M
Median household income$146,202
Median home value$684,700
Median rent$2,252/mo
Rent as share of income19%

In New York: 19th of 62 counties for 5-year population growth · 58th of 62 counties for net in-migration (per resident) · 1st of 62 counties for median household income · 4th of 62 counties for median home value.

Where new residents came from

Top counties by households (tax returns) moving to Nassau County, 2022–2023 (IRS).

FromHouseholds (tax returns)Their income (AGI)
Queens County, NY10,413$985.2M
Suffolk County, NY4,060$436.4M
Kings County, NY2,571$278.7M
New York County, NY1,623$443.6M
Bronx County, NY415$31.3M
Westchester County, NY338$43.9M
Palm Beach County, FL332$60.1M
Hudson County, NJ269$45.6M

Where leavers went

Top counties by households leaving Nassau County, 2022–2023 (IRS).

ToHouseholds (tax returns)Their income (AGI)
Suffolk County, NY6,970$784.1M
Queens County, NY4,717$331.6M
New York County, NY2,126$372.3M
Kings County, NY1,488$124.1M
Palm Beach County, FL959$225.0M
Westchester County, NY495$83.7M
Broward County, FL434$56.4M
Los Angeles County, CA387$108.0M

BizyFi in Nassau County

10 companies in the BizyFi directory are based here. Search them on the company map (company names with a free account), or browse New York companies.

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Sources: U.S. Census Bureau population estimates (vintage 2025), American Community Survey 5-year (2024), and IRS Statistics of Income county-to-county migration data (2022–2023). Migration counts are tax returns (roughly households) moving between U.S. counties; the IRS suppresses very small flows. Growth rates, per-1,000 figures, rent share and state ranks are BizyFi calculations. Data updated 2026-10-17. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.