Billings: Demographics & People
About 119,434 people live in Billings, in 50,994 households. Population grew 0.9% from 118,321 (2022) to 119,434 (2024). Median age 38.8 years. (1.4y younger than Montana). Children under 18 are 22% of the population. Population is 82% White (non-Hispanic) and 7% Hispanic or Latino. The community is relatively homogeneous (Simpson index 0.18). 57% of households are family-led. County is gaining 1,384 residents per year (2022-2023). County health: 35% adult obesity, 17% smoke.
- 2.3 people per household (vs Montana avg 2.4).
- 43% non-family households (singles, roommates) (vs Montana 45%).
- 69 dependents per 100 working-age (youth + seniors / 18-64) (vs Montana 70).
Population & Trend
Population grew 0.9% from 118,321 (2022) to 119,434 (2024) — about 1.6× the recent U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~120,559 (extrapolated at 0.5%/yr trend). Census Bureau Vintage estimate: 122,069.
| Census data vintage | 2024 |
|---|---|
| Population | 164,731 people |
| Annual growth rate · Population change | 0.9% |
| Annual growth rate · Population (2022) | 118,321 |
| Annual growth rate · Population (2024) | 119,434 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | stable |
| Population | 119,434 people (vs Montana 28,504) |
| Population Estimate | 122,069 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 38.8y is 0.1 years younger than the U.S. median (38.9y). Children under 18 make up 22% — near the U.S. share of ~22%.
| Age Summary · Median age | 38.8 years (at Montana median) |
|---|---|
| Age Summary · Children Pct | 22.0% |
| Age Summary · Character | family-oriented |
| Age Summary · Total Pop | 119,434 |
| Age Summary · Under 18 | 26,244 |
| Age Summary · 18 To 34 | 27,710.0× |
| Age Summary · 35 To 64 | 42,970.0× |
| Age Summary · 65 Plus | 22,510 |
| Population under 18 | 26,244 |
| Median age | 38.8 years (at Montana median) |
Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023 · Refreshed 2026-04-29
Race, Ethnicity & Diversity
Of 119,434 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.18 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 102,061 |
|---|---|
| Black residents | 1,205 |
| Asian residents | 1,013 |
| Hispanic or Latino residents | 8,520 |
| Diversity Index · Diversity index (Simpson) | 17.5% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 4 |
| Diversity Index · Largest group share | 90.5% |
| Asian population | 0.8% (at Montana median) |
| Black population | 0.4% (at Montana median) |
| Hispanic or Latino population | 7.4% (vs Montana 5.1%) |
| White (non-Hispanic) population | 82.5% (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). 0.6% are foreign-born — below the U.S. average of 13.9%. 2% have naturalized to U.S. citizenship.
| Residents born in this state | 69,153 |
|---|---|
| Residents born in another state | 47,077 |
| Share born in this state | 57.9% |
| Share born in another state | 42.1% |
| Native-born U.S. citizens | 39.4% |
| Foreign-born residents | 0.6% |
| Naturalized citizens | 2.1% |
| Total foreign-born residents | 2,374 |
| From Europe | 734 |
| From Africa | 811 |
Households & Family Composition
50,994 households. Averaging 2.3 people each — smaller than the U.S. average of 2.5. 57% are family households — below the U.S. share of ~65%. Of 29,170 families, 30% are married couples with children.
| Children under 18 | 26,661 |
|---|---|
| Total families | 29,170 |
| Married couples with children | 8,827 |
| Single-parent households | 1,868 |
| Average household size | 2.29 |
| Women who gave birth (past year) | 14.8% |
| Grandparents living with grandchildren | 1,737 |
| Grandparents responsible for grandchildren | 443 |
| Family households | 29,148 households (vs Montana 6,314) |
| Households that are families | 57.2% (vs Montana 55.2%) |
| Total households | 50,994 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. 15.5% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is gaining 1,384 residents per year on net (IRS migration data).
| Moved within the county (past year) | 15.5% |
|---|---|
| Migration · People moving in (annual) | 158,499 |
| Migration · People moving out (annual) | 157,115 |
| Migration · Net migration (in − out) | 1,384 |
| Migration · Population growing | Yes |
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 | 7,759 |
|---|---|
| Disability rate | 6.7% |
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. 3,165 residents live in group quarters (2.6% of population).
| Living in group quarters | 3,165 |
|---|
Other
| Congressional District · Congress | 118th |
|---|---|
| Cdc Birth Rate · Fips | 30111 |
| Cdc Birth Rate · State Fips | 30 |
| Cdc Birth Rate · County Fips | 111 |
| Cdc Birth Rate · County | Yellowstone |
| Cdc Birth Rate · Birth Rate | 17.8% |
| Cdc Birth Rate · Lower Ci | 16.00 |
| Cdc Birth Rate · Upper Ci | 19.80 |
| Cdc Mortality · Fips | 30111 |
| Cdc Mortality · County | Yellowstone County |
| Cdc Mortality · Urban Rural | Small metro |
| Cdc Mortality · Total Deaths 2020 2023 | 8,436 |
| Cdc Vaccination · Fips | 30111 |
| Cdc Vaccination · County | Yellowstone County |
| Cdc Vaccination · Dose1 Pop Pct | 60.5% |
| Cdc Vaccination · Series Complete Pct | 53.6% |
| Cdc Vaccination · Booster Pct | 51.0% |
| Cdc Vaccination · Population 2019 | 161,300 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 10 |
| Family Score · Schools | 43 |
| Family Score · Childcare Centers | 19 |
| Family Score · Youth Sports Orgs | 8 |
| Family Score · Children Pct | 22.0% |
| Family Score · Rating | excellent |
| Town Summary · Key Facts | population 119,434, stable, family-oriented, middle-class, mixed |
| Town Summary · Population | 119,434 people (vs Montana 28,504) |
| Town Summary · County | Yellowstone County |
Sources: NCES school congressional district assignment · federal dataset cascade