Demographics & People
115,643 people call Manchester home, in 49,162 households. Population grew 0.2% from 115,415 (2022) to 115,643 (2024). Median age 38.0 years. (3.0y younger than Hillsborough County; 5.2y younger than New Hampshire). Children under 18 are 18% of the population. Population is 72% White (non-Hispanic) and 14% Hispanic or Latino. 54% of households are family-led. County is losing 1,276 residents per year (2022-2023). County health: 30% adult obesity, 10% smoke.
- 2.4 people per household (vs New Hampshire avg 2.4).
- 46% non-family households (singles, roommates) (vs New Hampshire 43%).
- 50 dependents per 100 working-age (youth + seniors / 18-64) (vs New Hampshire 62).
Population & Trend
Population grew 0.2% from 115,415 (2022) to 115,643 (2024) — close to the U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~115,874 (extrapolated at 0.1%/yr trend).
| Census data vintage | 2024 |
|---|---|
| County Population | 422,937 people |
| Annual growth rate · Population change | 20.0% |
| Annual growth rate · Population (2022) | 115,415 |
| Annual growth rate · Population (2024) | 115,643 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | stable |
| Population | 115,643 people (vs New Hampshire 22,939) |
| Population Estimate | 116,186 |
Sources: U.S. Census Bureau, ACS 5-Year · U.S. Census Bureau, ACS 5-Year DP05 · U.S. Census Bureau, Vintage Population Estimates · Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 38.0y is 0.9 years younger than the U.S. median (38.9y). Children under 18 make up 18% — below the U.S. share of ~22%.
| Age Summary · Median age | 38.0 years (vs New Hampshire 40.0y) |
|---|---|
| Age Summary · Children Pct | 18.0% |
| Age Summary · Character | family-oriented |
| Age Summary · Total Pop | 115,643 |
| Age Summary · Under 18 | 20,821 |
| Age Summary · 18 To 34 | 31,995 |
| Age Summary · 35 To 64 | 44,918 |
| Age Summary · 65 Plus | 17,909 |
| Median age | 38.0 years (vs New Hampshire 40.0y) |
Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023 · Refreshed 2026-04-29
Race, Ethnicity & Diversity
Of 115,643 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups).
| Diversity Index · Simpson Index | 39.2% |
|---|---|
| Diversity Index · Interpretation | less diverse |
| Asian population | 4.1% (vs New Hampshire 2.9%) |
| Black population | 4.2% (vs New Hampshire 1.7%) |
| Hispanic or Latino population | 13.8% (vs New Hampshire 3.8%) |
| White (non-Hispanic) population | 72.3% (vs New Hampshire 85.5%) |
Sources: U.S. Census Bureau, ACS 5-Year DP05 · Census ACS 5-Year 2023 · Refreshed 2026-04-12
Ancestry
Self-reported ancestry from Census ACS — what residents report as their ethnic origin, separate from race. Counts can exceed population because people can list multiple ancestries.
Top (1)
Sources: Census ACS 2022 B04006+B03001+B02001
Households & Family Composition
49,162 households. Averaging 2.3 people each — smaller than the U.S. average of 2.5. 54% are family households — below the U.S. share of ~65%. Of 26,730 families, 22% are married couples with children.
| Family households | 26,587 households (vs New Hampshire 5,565) |
|---|---|
| Households that are families | 54.1% (vs New Hampshire 56.9%) |
| Total households | 49,162 households (vs New Hampshire 10,902) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 15.5% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 1,276 residents per year on net (IRS migration data).
| Migration · People moving in (annual) | 403,477 |
|---|---|
| Migration · People moving out (annual) | 404,753 |
| Migration · Net migration (in − out) | -1,276 |
Sources: IRS SOI Migration 2021-2022 · Refreshed 2026-04-12