Coulee Dam: Demographics & People
Coulee Dam's population stands at 1,595 people, in 659 households. Population grew 9.5% from 1,457 (2022) to 1,595 (2024). Median age 38.0 years. (5.2y younger than Okanogan County; 0.8y older than Washington). Children under 18 are 16% of the population. Population is 47% White (non-Hispanic) and 4% Hispanic or Latino. The community is somewhat diverse (Simpson index 0.21). 51% of households are family-led. County is losing 75 residents per year (2022-2023). County health: 38% adult obesity, 13% smoke.
- 2.4 people per household (vs Washington avg 2.5).
- 49% non-family households (singles, roommates) (vs Washington 37%).
- 54 dependents per 100 working-age (youth + seniors / 18-64) (vs Washington 61).
Population & Trend
Population grew 9.5% from 1,457 (2022) to 1,595 (2024) — about 15.8× the recent U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~1,749 (extrapolated at 4.7%/yr trend). Census Bureau Vintage estimate: 1,969.
| Census data vintage | 2024 |
|---|---|
| Population | 42,938 people |
| Annual growth rate · Population change | 9.5% |
| Annual growth rate · Population (2022) | 1,457 |
| Annual growth rate · Population (2024) | 1,595 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | booming |
| Population | 1,595 people (vs Washington 51,513) |
| Population Estimate | 1,969 |
Sources: 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 16% — below the U.S. share of ~22%.
| Age Summary · Median age | 38.0 years (vs Washington 37.2y) |
|---|---|
| Age Summary · Children Pct | 16.0% |
| Age Summary · Character | family-oriented |
| Age Summary · Total Pop | 1,595 |
| Age Summary · Under 18 | 255 |
| Age Summary · 18 To 34 | 509.0× |
| Age Summary · 35 To 64 | 525.0× |
| Age Summary · 65 Plus | 306 |
| Population under 18 | 255 |
| Median age | 38.0 years (vs Washington 37.2y) |
Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023 · Refreshed 2026-04-29
Race, Ethnicity & Diversity
Of 1,595 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.21 (0 = single group, 1 = perfectly even distribution); this is read as somewhat diverse.
| White residents | 739 |
|---|---|
| Black residents | 8 |
| Asian residents | 16 |
| Hispanic or Latino residents | 70 |
| Diversity Index · Diversity index (Simpson) | 20.5% |
| Diversity Index · Diversity label | somewhat diverse |
| Diversity Index · Groups counted | 4 |
| Diversity Index · Largest group share | 88.7% |
| Asian population | 1.4% (vs Washington 8.6%) |
| Black population | 0.6% (vs Washington 2.8%) |
| Hispanic or Latino population | 4.3% (vs Washington 10.9%) |
| White (non-Hispanic) population | 47.2% (vs Washington 59.9%) |
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). 1.9% are foreign-born — below the U.S. average of 13.9%. 3% have naturalized to U.S. citizenship.
| Residents born in this state | 952 |
|---|---|
| Residents born in another state | 561 |
| Share born in this state | 59.7% |
| Share born in another state | 40.3% |
| Native-born U.S. citizens | 35.2% |
| Foreign-born residents | 1.9% |
| Naturalized citizens | 3.3% |
| Total foreign-born residents | 36 |
| From Europe | 2 |
| From Africa | 10 |
Households & Family Composition
659 households. Averaging 2.2 people each — smaller than the U.S. average of 2.5. 51% are family households — below the U.S. share of ~65%. Of 339 families, 18% are married couples with children.
| Children under 18 | 252 |
|---|---|
| Total families | 339 |
| Married couples with children | 60 |
| Single-parent households | 54 |
| Average household size | 2.22 |
| Women who gave birth (past year) | 11.6% |
| Grandparents living with grandchildren | 18 |
| Grandparents responsible for grandchildren | 9 |
| Family households | 339 households (vs Washington 12,874) |
| Households that are families | 51.4% (vs Washington 63.2%) |
| Total households | 659 households (vs Washington 19,672) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 22.5% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 75 residents per year on net (IRS migration data).
| Moved within the county (past year) | 22.5% |
|---|---|
| Migration · People moving in (annual) | 43,235 |
| Migration · People moving out (annual) | 43,310 |
| Migration · Net migration (in − out) | -75 |
| 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 | 143 |
|---|---|
| Disability rate | 10.7% |
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. 74 residents live in group quarters (4.6% of population).
| Living in group quarters | 74 |
|---|
Other
| Congressional District · District | 4 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 53017 |
| Cdc Birth Rate · State Fips | 53 |
| Cdc Birth Rate · County Fips | 017 |
| Cdc Birth Rate · County | Douglas |
| Cdc Birth Rate · Birth Rate | 16.8% |
| Cdc Birth Rate · Lower Ci | 13.90 |
| Cdc Birth Rate · Upper Ci | 20.20 |
| Cdc Mortality · Fips | 53017 |
| Cdc Mortality · County | Douglas County |
| Cdc Mortality · Urban Rural | Small metro |
| Cdc Mortality · Total Deaths 2020 2023 | 766 |
| Cdc Vaccination · Fips | 53017 |
| Cdc Vaccination · County | Douglas County |
| Cdc Vaccination · Dose1 Pop Pct | 68.8% |
| Cdc Vaccination · Series Complete Pct | 63.5% |
| Cdc Vaccination · Booster Pct | 49.5% |
| Cdc Vaccination · Population 2019 | 43,429 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 2.30 |
| Family Score · Schools | 2 |
| Family Score · Childcare Centers | 1 |
| Family Score · Children Pct | 16.0% |
| Family Score · Rating | limited |
| Town Summary · Key Facts | population 1,595, booming, family-oriented, middle-class, white collar |
| Town Summary · Population | 1,595 people (vs Washington 51,513) |
| Town Summary · County | Douglas County |
Sources: NCES school congressional district assignment · federal dataset cascade