Demographics & People — Mill Creek, Washington
Population Overview
| Population (Census) | 20,846 |
|---|
| Estimated 2026 | ~21,200 |
|---|
| Median Age | 39.3 |
|---|
| Total Households | 8,473 |
|---|
| Family Households | 5,438 |
|---|
| Average Household Size | 2.45 |
|---|
| Diversity Index | 0.513 (moderately diverse) |
|---|
Race & Ethnicity
| White | 13,340 |
|---|
| Black or African American | 969 |
|---|
| Asian | 4,289 |
|---|
| Hispanic or Latino | 1,672 |
|---|
Heritage & Ancestry
| Group | Count |
|---|
| Other groups | 8,233 |
| Unclassified or not reported | 3,459 |
| English | 2,823 |
| German | 2,264 |
| Irish | 1,559 |
| Hispanic: Hispanic or Latino | 1,451 |
| Norwegian | 1,060 |
| Italian | 906 |
| Hispanic: Mexican | 734 |
| French (except Basque) | 595 |
Language
| English Only | 14,394 |
|---|
| Spanish | 1,147 |
|---|
| Population 5+ | 19,535 |
|---|
Veterans
| Veterans | 909 |
|---|
| Population 18+ | 16,099 |
|---|
Commuting
| Mean Commute Time | 33.0 minutes |
|---|
| Work from Home | 29.9% |
|---|
| Commuter Profile | N/A |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Mill Creek, Washington.
