Nashua: Demographics & People
279 people call Nashua home, in 125 households. Population shrank 9.7% from 309 (2022) to 279 (2024). Median age 54.1 years. (9.8y older than Valley County; 15.3y older than Montana). Children under 18 are 18% of the population. Population is 81% White (non-Hispanic) and 5% Hispanic or Latino. The community is relatively homogeneous (Simpson index 0.16). 49% of households are family-led. County is losing 118 residents per year (2022-2023). County health: 34% adult obesity, 20% smoke.
- 2.2 people per household (vs Montana avg 2.4).
- 51% non-family households (singles, roommates) (vs Montana 45%).
- 101 dependents per 100 working-age (youth + seniors / 18-64) (vs Montana 70).
Population & Trend
Population shrank 9.7% from 309 (2022) to 279 (2024). Estimated 2026 population: ~252 (extrapolated at -4.9%/yr trend). Census Bureau Vintage estimate: 219.
| Census data vintage | 2024 |
|---|---|
| Population | 823 people |
| Annual growth rate · Population change | -9.7% |
| Annual growth rate · Population (2022) | 309 |
| Annual growth rate · Population (2024) | 279 |
| Annual growth rate · Trend category | shrinking |
| Population | 279 people (vs Montana 28,504) |
| Population Estimate | 219 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 54.1y is 15.2 years older than the U.S. median (38.9y). Children under 18 make up 18% — below the U.S. share of ~22%.
| Age Summary · Median age | 54.1 years (vs Montana 38.8y) |
|---|---|
| Age Summary · Children Pct | 17.6% |
| Age Summary · Character | retirement community |
| Age Summary · Total Pop | 279 |
| Age Summary · Under 18 | 49 |
| Age Summary · 18 To 34 | 29.0× |
| Age Summary · 35 To 64 | 110.0× |
| Age Summary · 65 Plus | 91 |
| Population under 18 | 49 |
| Median age | 54.1 years (vs Montana 38.8y) |
Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023 · Refreshed 2026-04-29
Race, Ethnicity & Diversity
Of 279 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.16 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 248 |
|---|---|
| Asian residents | 1 |
| Hispanic or Latino residents | 22 |
| Diversity Index · Diversity index (Simpson) | 15.6% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 3 |
| Diversity Index · Largest group share | 91.5% |
| Asian population | 0.4% (vs Montana 80.0%) |
| Hispanic or Latino population | 4.7% (vs Montana 5.1%) |
| White (non-Hispanic) population | 81.4% (vs Montana 84.8%) |
Sources: 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 (8)
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS). 0.7% are foreign-born — below the U.S. average of 13.9%. 0% have naturalized to U.S. citizenship.
| Residents born in this state | 177 |
|---|---|
| Residents born in another state | 99 |
| Share born in this state | 63.4% |
| Share born in another state | 36.6% |
| Native-born U.S. citizens | 35.5% |
| Foreign-born residents | 0.7% |
| Naturalized citizens | 0.4% |
| Total foreign-born residents | 8 |
| From Africa | 1 |
Households & Family Composition
125 households. Averaging 2.4 people each — smaller than the U.S. average of 2.5. 49% are family households — below the U.S. share of ~65%. Of 63 families, 37% are married couples with children.
| Children under 18 | 74 |
|---|---|
| Total families | 63 |
| Married couples with children | 23 |
| Single-parent households | 6 |
| Average household size | 2.37 |
| Women who gave birth (past year) | 10.3% |
| Family households | 61 households (vs Montana 6,314) |
| Households that are families | 48.8% (vs Montana 55.2%) |
| Total households | 125 households (vs Montana 11,795) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 5.4% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 118 residents per year on net (IRS migration data).
| Moved within the county (past year) | 5.4% |
|---|---|
| Migration · People moving in (annual) | 698 |
| Migration · People moving out (annual) | 816 |
| Migration · Net migration (in − out) | -118 |
| Migration · Year | 2022-2023 |
Sources: IRS SOI Migration 2021-2022 · Refreshed 2026-04-12
Disability
Census ACS measures self-reported functional limitations — vision, hearing, mobility, cognitive, self-care, or independent-living. The U.S. baseline disability rate is about 12–13%; rates trend higher with median age.
| Residents with a disability | 33 |
|---|---|
| Disability rate | 10.5% |
Group Quarters
Group quarters are non-household living arrangements counted by the Census — college dormitories, nursing homes, military barracks, group homes, correctional facilities, and similar institutional or shared housing. 8 residents live in group quarters (2.9% of population).
| Living in group quarters | 8 |
|---|
Other
| Congressional District · Congress | 118th |
|---|---|
| Cdc Birth Rate · Fips | 30037 |
| Cdc Birth Rate · State Fips | 30 |
| Cdc Birth Rate · County Fips | 037 |
| Cdc Birth Rate · County | Golden Valley |
| Cdc Birth Rate · Birth Rate | 7.4% |
| Cdc Birth Rate · Lower Ci | 1.00 |
| Cdc Birth Rate · Upper Ci | 26.30 |
| Cdc Mortality · Fips | 30037 |
| Cdc Mortality · County | Golden Valley County |
| Cdc Mortality · Urban Rural | Small metro |
| Cdc Mortality · Total Deaths 2020 2023 | 34 |
| Cdc Vaccination · Fips | 30037 |
| Cdc Vaccination · County | Golden Valley County |
| Cdc Vaccination · Dose1 Pop Pct | 54.7% |
| Cdc Vaccination · Series Complete Pct | 48.0% |
| Cdc Vaccination · Booster Pct | 44.9% |
| Cdc Vaccination · Population 2019 | 821 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 2.50 |
| Family Score · Schools | 3 |
| Family Score · Children Pct | 17.6% |
| Family Score · Rating | limited |
| Town Summary · Key Facts | population 279, shrinking, retirement community, upper-middle, mixed |
| Town Summary · Population | 279 people (vs Montana 28,504) |
| Town Summary · County | Golden Valley County |
Sources: NCES school congressional district assignment · federal dataset cascade