Stillwater: Demographics & People
49,269 people call Stillwater home, in 19,654 households. Population grew 0.9% from 48,818 (2022) to 49,269 (2024). Median age 23.9 years. (3.8y younger than Payne County; 11.3y younger than Oklahoma). Children under 18 are 14% of the population. Population is 71% White (non-Hispanic) and 6% Asian. 41% of households are family-led. County is losing 393 residents per year (2022-2023). County health: 38% adult obesity, 16% smoke.
- 2.5 people per household (vs Oklahoma avg 2.6).
- 59% non-family households (singles, roommates) (vs Oklahoma 39%).
- 33 dependents per 100 working-age (youth + seniors / 18-64) (vs Oklahoma 67).
Population & Trend
Population grew 0.9% from 48,818 (2022) to 49,269 (2024) — about 1.5× the recent U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~49,723 (extrapolated at 0.5%/yr trend). Census Bureau Vintage estimate: 50,331.
| Census data vintage | 2024 |
|---|---|
| Population | 81,646 people |
| Annual growth rate · Population change | 0.9% |
| Annual growth rate · Population (2022) | 48,818 |
| Annual growth rate · Population (2024) | 49,269 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | stable |
| Population | 49,269 people (vs Oklahoma 63,420) |
| Population Estimate | 50,331 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 23.9y is 15.0 years younger than the U.S. median (38.9y). Children under 18 make up 14% — below the U.S. share of ~22%.
| Age Summary · Median age | 23.9 years (vs Oklahoma 35.2y) |
|---|---|
| Age Summary · Children Pct | 14.2% |
| Age Summary · Character | young community |
| Age Summary · Total Pop | 49,269 |
| Age Summary · Under 18 | 7,016 |
| Age Summary · 18 To 34 | 25,739.0× |
| Age Summary · 35 To 64 | 11,387.0× |
| Age Summary · 65 Plus | 5,127 |
| Population under 18 | 7,016 |
| Median age | 23.9 years (vs Oklahoma 35.2y) |
Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023 · Refreshed 2026-04-29
Race, Ethnicity & Diversity
Of 49,269 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups).
| White residents | 35,970 |
|---|---|
| Black residents | 2,355 |
| Asian residents | 3,017 |
| Hispanic or Latino residents | 3,011 |
| Diversity Index · Simpson Index | 44.7% |
| Diversity Index · Interpretation | moderately diverse |
| Asian population | 6.4% (vs Oklahoma 3.2%) |
| Black population | 4.5% (vs Oklahoma 5.5%) |
| Hispanic or Latino population | 5.9% (vs Oklahoma 12.3%) |
| White (non-Hispanic) population | 71.4% (vs Oklahoma 57.8%) |
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%. 9% have naturalized to U.S. citizenship.
| Residents born in this state | 26,281 |
|---|---|
| Residents born in another state | 18,406 |
| Share born in this state | 53.3% |
| Share born in another state | 46.7% |
| Native-born U.S. citizens | 37.4% |
| Foreign-born residents | 0.6% |
| Naturalized citizens | 8.7% |
| Total foreign-born residents | 4,740 |
| From Europe | 301 |
| From Africa | 3,355 |
| From Latin America | 21 |
Households & Family Composition
19,654 households. Averaging 2.1 people each — smaller than the U.S. average of 2.5. 41% are family households — below the U.S. share of ~65%. Of 8,271 families, 28% are married couples with children.
| Children under 18 | 6,887 |
|---|---|
| Total families | 8,271 |
| Married couples with children | 2,310 |
| Single-parent households | 504 |
| Average household size | 2.06 |
| Women who gave birth (past year) | 8.3% |
| Grandparents living with grandchildren | 102 |
| Grandparents responsible for grandchildren | 27 |
| Family households | 8,017 households (vs Oklahoma 16,590) |
| Households that are families | 40.8% (vs Oklahoma 61.1%) |
| Total households | 19,654 households (vs Oklahoma 23,671) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 34.3% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 393 residents per year on net (IRS migration data).
| Moved within the county (past year) | 34.3% |
|---|---|
| Migration · People moving in (annual) | 63,274 |
| Migration · People moving out (annual) | 63,667 |
| Migration · Net migration (in − out) | -393 |
| 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 | 2,486 |
|---|---|
| Disability rate | 5.2% |
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. 8,883 residents live in group quarters (18.0% of population).
| Living in group quarters | 8,883 |
|---|
Other
| Congressional District · District | 3 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 40119 |
| Cdc Birth Rate · State Fips | 40 |
| Cdc Birth Rate · County Fips | 119 |
| Cdc Birth Rate · County | Payne |
| Cdc Birth Rate · Birth Rate | 11.3% |
| Cdc Birth Rate · Lower Ci | 9.80 |
| Cdc Birth Rate · Upper Ci | 13.00 |
| Cdc Mortality · Fips | 40119 |
| Cdc Mortality · County | Payne County |
| Cdc Mortality · Urban Rural | Micropolitan |
| Cdc Mortality · Total Deaths 2020 2023 | 2,218 |
| Cdc Vaccination · Fips | 40119 |
| Cdc Vaccination · County | Payne County |
| Cdc Vaccination · Dose1 Pop Pct | 63.3% |
| Cdc Vaccination · Series Complete Pct | 51.9% |
| Cdc Vaccination · Booster Pct | 48.5% |
| Cdc Vaccination · Population 2019 | 81,784 |
| Cdc Vaccination · Metro Status | Non-metro |
| Family Score · Score | 8.70 |
| Family Score · Schools | 9 |
| Family Score · Childcare Centers | 9 |
| Family Score · Youth Sports Orgs | 1 |
| Family Score · Children Pct | 14.2% |
| Family Score · Rating | excellent |
| Town Summary · Key Facts | population 49,269, stable, young community, working-class, mixed |
| Town Summary · Population | 49,269 people (vs Oklahoma 63,420) |
| Town Summary · County | Payne County |
Sources: NCES school congressional district assignment · federal dataset cascade