Market insights · New Hampshire
Carroll County, NH: growth, migration and housing
Carroll County has 52,784 residents, up 5.0% since 2020 (+0.4% in the last year). In 2022–2023, 1,814 households moved in and 1,539 moved out (+275 net), bringing in a net $109.2M of income. Median household income is $86,463, the median home $388,900 and median rent $1,195 a month.
In New Hampshire: 1st of 10 counties for 5-year population growth · 1st of 10 counties for net in-migration (per resident) · 7th of 10 counties for median household income · 3rd of 10 counties for median home value.
Where new residents came from
Top counties by households (tax returns) moving to Carroll County, 2022–2023 (IRS).
| From | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Strafford County, NH | 194 | $16.5M |
| Belknap County, NH | 137 | $13.9M |
| Middlesex County, MA | 116 | $28.9M |
| Rockingham County, NH | 114 | $15.5M |
| Essex County, MA | 101 | $19.2M |
| York County, ME | 65 | $5.5M |
| Merrimack County, NH | 55 | $3.5M |
| Oxford County, ME | 42 | $2.0M |
Where leavers went
Top counties by households leaving Carroll County, 2022–2023 (IRS).
| To | Households (tax returns) | Their income (AGI) |
|---|---|---|
| Strafford County, NH | 148 | $7.7M |
| Rockingham County, NH | 106 | $15.2M |
| Belknap County, NH | 80 | $4.6M |
| Oxford County, ME | 76 | $3.2M |
| Cumberland County, ME | 61 | $4.2M |
| York County, ME | 51 | $2.8M |
| Middlesex County, MA | 50 | $10.5M |
| Grafton County, NH | 46 | $2.8M |
BizyFi in Carroll County
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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.