Market insights · New Jersey
Middlesex County, NJ: growth, migration and housing
Middlesex County has 883,335 residents, up 2.6% since 2020 (+0.2% in the last year). In 2022–2023, 21,538 households moved in and 25,006 moved out (-3,468 net), while a net $521.0M of income left. Median household income is $111,549, the median home $462,900 and median rent $1,871 a month.
In New Jersey: 11th of 21 counties for 5-year population growth · 18th of 21 counties for net in-migration (per resident) · 7th of 21 counties for median household income · 9th of 21 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Middlesex County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Union County, NJ | 2,491 | $170.7M |
| Somerset County, NJ | 1,868 | $143.9M |
| Hudson County, NJ | 1,620 | $194.5M |
| Monmouth County, NJ | 1,504 | $130.4M |
| Essex County, NJ | 1,194 | $88.1M |
| Kings County, NY | 1,017 | $83.8M |
| Mercer County, NJ | 957 | $98.1M |
| Richmond County, NY | 843 | $78.8M |
Where leavers went
Top counties by households leaving Middlesex County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Somerset County, NJ | 2,662 | $253.8M |
| Monmouth County, NJ | 1,907 | $220.4M |
| Union County, NJ | 1,682 | $116.6M |
| Mercer County, NJ | 1,342 | $136.6M |
| Hudson County, NJ | 1,042 | $102.4M |
| Ocean County, NJ | 931 | $82.8M |
| Essex County, NJ | 717 | $56.2M |
| Burlington County, NJ | 594 | $51.3M |
BizyFi in Middlesex County
3 companies in the BizyFi directory are based here. Search them on the company map (company names with a free account), or browse New Jersey 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.