Demographics & People — Tampico, Washington
Population Overview
| Population (Census) | 514 |
| Estimated 2026 | ~900 |
| Median Age | 33.3 |
| Total Households | 133 |
| Family Households | 115 |
| Average Household Size | 3.86 |
| Diversity Index | 0.3974 (somewhat diverse) |
Race & Ethnicity
| White | 478 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 180 |
Heritage & Ancestry
| Group | Count |
| Norwegian | 161 |
| Other groups | 129 |
| British | 127 |
| Hispanic: Mexican | 111 |
| Hispanic: Hispanic or Latino | 111 |
| Unclassified or not reported | 65 |
| English | 41 |
| German | 26 |
| Irish | 20 |
| German Russian | 20 |
Language
| English Only | 401 |
| Spanish | 83 |
| Population 5+ | 484 |
Veterans
| Veterans | 5 |
| Population 18+ | 250 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Tampico, Washington.