WA District 4
Washington · 3 Counties · Yakima, Richland
civdotiq.org
Federal Representatives
Maria Cantwell
Democratic · U.S. Senator
Phone: 202-224-3441
Web: https://www.cantwell.senate.gov
Office: 511 Hart Senate Office Building Washington DC 20510
Patty Murray
Democratic · U.S. Senator
Phone: 202-224-2621
Web: https://www.murray.senate.gov
Office: 154 Russell Senate Office Building Washington DC 20510
Dan Newhouse
Republican · U.S. Representative
Phone: 202-225-5816
Web: https://newhouse.house.gov
Office: 460 Cannon House Office Building Washington DC 20515-4704
Key Demographics
781,735
Population
$77K
Median Income
35
Median Age
| Metric | Value |
|---|---|
| Bachelor's Degree or Higher | 15.2% |
| Poverty Rate | 14.0% |
| Urban Population | 57% |
| Diversity Index | 51.2 |
| Land Area | 17,885 sq mi |
Federal Spending
$109.1M
Total Annual
32
Contracts & Grants
$1.2B
Infrastructure
| Project | Agency | Amount |
|---|---|---|
| HANFORD TANK WASTE OPERATIONS & CLOSURE, LLC | Department of Energy | $1.9B |
| CENTRAL PLATEAU CLEANUP COMPANY, LLC | Department of Energy | $1.1B |
| HANFORD LABORATORY MANAGEMENT AND INTEGRATION LLC | Department of Energy | $559.2M |
| CENTRAL PLATEAU CLEANUP COMPANY, LLC | Department of Energy | $53.1M |
| HARTMAN-WALSH PAINTING COMPANY | Department of the Interior | $37.7M |
Statewide Context
1,781,187
Washington Medicaid & CHIP (Jun 2026)
486,753
Washington Veteran Population (FY2026)
Statewide totals, not specific to this district — these federal programs report only at the state level. Sources: CMS (data.medicaid.gov), VA NCVAS (datahub.va.gov).
Geography
| Counties (3) | Major Cities |
|---|---|
| Yakima, Benton, Franklin | Yakima, Richland |