Washington: Demographics & People
About 928 people live in Washington, in 373 households. Population grew 31.4% from 706 (2022) to 928 (2024). Median age 37.3 years. (1.3y younger than McClain County; 2.1y older than Oklahoma). Children under 18 are 27% of the population. Population is 82% White (non-Hispanic) and 1% Hispanic or Latino. The community is relatively homogeneous (Simpson index 0.04). 82% of households are family-led. County is gaining 3,029 residents per year (2022-2023). County health: 38% adult obesity, 16% smoke.
- 2.5 people per household (vs Oklahoma avg 2.6).
- 18% non-family households (singles, roommates) (vs Oklahoma 39%).
- 80 dependents per 100 working-age (youth + seniors / 18-64) (vs Oklahoma 67).
Population & Trend
Population grew 31.4% from 706 (2022) to 928 (2024) — about 52.4× the recent U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~1,242 (extrapolated at 15.7%/yr trend). Census Bureau Vintage estimate: 1,756.
| Census data vintage | 2024 |
|---|---|
| Population | 41,662 people |
| Annual growth rate · Population change | 31.4% |
| Annual growth rate · Population (2022) | 706 |
| Annual growth rate · Population (2024) | 928 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | booming |
| Population | 928 people (vs Oklahoma 63,420) |
| Population Estimate | 1,756 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 37.3y is 1.6 years younger than the U.S. median (38.9y). Children under 18 make up 27% — above the U.S. share of ~22%.
| Age Summary · Median age | 37.3 years (vs Oklahoma 35.2y) |
|---|---|
| Age Summary · Children Pct | 26.8% |
| Age Summary · Character | family-oriented |
| Age Summary · Total Pop | 928 |
| Age Summary · Under 18 | 249 |
| Age Summary · 18 To 34 | 154.0× |
| Age Summary · 35 To 64 | 362.0× |
| Age Summary · 65 Plus | 163 |
| Population under 18 | 249 |
| Median age | 37.3 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 928 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.04 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 541 |
|---|---|
| Asian residents | 7 |
| Hispanic or Latino residents | 5 |
| Diversity Index · Diversity index (Simpson) | 4.3% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 3 |
| Diversity Index · Largest group share | 97.8% |
| Asian population | 0.3% (vs Oklahoma 3.2%) |
| Hispanic or Latino population | 0.8% (vs Oklahoma 12.3%) |
| White (non-Hispanic) population | 81.6% (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 (6)
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS). 0.9% are foreign-born — below the U.S. average of 13.9%. 1% have naturalized to U.S. citizenship.
| Residents born in this state | 702 |
|---|---|
| Residents born in another state | 209 |
| Share born in this state | 75.6% |
| Share born in another state | 24.4% |
| Native-born U.S. citizens | 22.5% |
| Foreign-born residents | 0.9% |
| Naturalized citizens | 1.0% |
| Total foreign-born residents | 13 |
Households & Family Composition
373 households. Averaging 2.8 people each — larger than the U.S. average of 2.5. 82% are family households — above the U.S. share of ~65%. Of 207 families, 43% are married couples with children.
| Children under 18 | 236 |
|---|---|
| Total families | 207 |
| Married couples with children | 88 |
| Single-parent households | 14 |
| Average household size | 2.82 |
| Women who gave birth (past year) | 6.5% |
| Grandparents living with grandchildren | 5 |
| Family households | 306 households (vs Oklahoma 16,590) |
| Households that are families | 82.0% (vs Oklahoma 61.1%) |
| Total households | 373 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. 27.9% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is gaining 3,029 residents per year on net (IRS migration data).
| Moved within the county (past year) | 27.9% |
|---|---|
| Migration · People moving in (annual) | 47,565 |
| Migration · People moving out (annual) | 44,536 |
| Migration · Net migration (in − out) | 3,029 |
| Migration · Population growing | Yes |
| 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 | 40 |
|---|---|
| Disability rate | 6.1% |
Other
| Congressional District · District | 4 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 40087 |
| Cdc Birth Rate · State Fips | 40 |
| Cdc Birth Rate · County Fips | 087 |
| Cdc Birth Rate · County | Mcclain |
| Cdc Birth Rate · Birth Rate | 20.5% |
| Cdc Birth Rate · Lower Ci | 17.10 |
| Cdc Birth Rate · Upper Ci | 24.30 |
| Cdc Mortality · Fips | 40087 |
| Cdc Mortality · County | McClain County |
| Cdc Mortality · Urban Rural | Large fringe metro |
| Cdc Mortality · Total Deaths 2020 2023 | 1,007 |
| Cdc Vaccination · Fips | 40087 |
| Cdc Vaccination · County | McClain County |
| Cdc Vaccination · Dose1 Pop Pct | 60.7% |
| Cdc Vaccination · Series Complete Pct | 50.5% |
| Cdc Vaccination · Booster Pct | 42.2% |
| Cdc Vaccination · Population 2019 | 40,474 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 2.80 |
| Family Score · Schools | 3 |
| Family Score · Childcare Centers | 1 |
| Family Score · Children Pct | 26.8% |
| Family Score · Rating | limited |
| Town Summary · Key Facts | population 928, booming, family-oriented, upper-middle, mixed |
| Town Summary · Population | 928 people (vs Oklahoma 63,420) |
| Town Summary · County | McClain County |
Sources: NCES school congressional district assignment · federal dataset cascade