Market insights · Massachusetts
Middlesex County, MA: growth, migration and housing
Middlesex County has 1,669,979 residents, up 2.8% since 2020 (+0.4% in the last year). In 2022–2023, 46,508 households moved in and 51,057 moved out (-4,549 net), while a net $1.48B of income left. Median household income is $130,847, the median home $727,800 and median rent $2,201 a month.
In Massachusetts: 7th of 14 counties for 5-year population growth · 12th of 14 counties for net in-migration (per resident) · 2nd of 14 counties for median household income · 3rd of 14 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) |
|---|---|---|
| Suffolk County, MA | 9,674 | $1134.2M |
| Essex County, MA | 4,184 | $333.6M |
| Norfolk County, MA | 3,372 | $665.2M |
| Worcester County, MA | 2,927 | $246.6M |
| Hillsborough County, NH | 1,149 | $89.9M |
| Plymouth County, MA | 669 | $53.7M |
| New York County, NY | 641 | $117.3M |
| Rockingham County, NH | 610 | $53.6M |
Where leavers went
Top counties by households leaving Middlesex County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Suffolk County, MA | 7,512 | $859.5M |
| Essex County, MA | 4,847 | $628.9M |
| Worcester County, MA | 4,592 | $417.5M |
| Norfolk County, MA | 3,619 | $533.7M |
| Hillsborough County, NH | 2,099 | $212.5M |
| New York County, NY | 1,212 | $121.7M |
| Rockingham County, NH | 1,098 | $188.6M |
| Plymouth County, MA | 873 | $113.4M |
BizyFi in Middlesex County
44 companies in the BizyFi directory are based here. Search them on the company map (company names with a free account), or browse Massachusetts 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.