Congressional district · Boundaries of the 118th Congress

Washington's 4th district

Washington's 4th district has 777,582 residents on 17,885 mi² of land. Dan Newhouse (R-WA-4) held the seat last under these boundaries. Federal contract obligations attributed to it reached $3.9B in FY2026.

These are the boundaries of the 118th Congress. The newest boundaries of this district are on its main page. See the newest boundaries

Residents
777,582
Land area
17,885 mi²
Counties
8
Representative
Dan Newhouse
Open in the Congress explorer
Map of Washington's 4th district within Washington

Members for this district

Members who held this seat while these boundaries were in force, newest first.

Senators

The state's senators today, or on the last day of these boundaries for an older plan.

Counties

Share of the district's residents living in each county, and share of the county's residents living in the district (2020 census tracts weighted by their overlap).

  1. Yakima County33% of the district · 100% of the county
  2. Benton County27% of the district · 100% of the county
  3. Grant County13% of the district · 100% of the county
  4. Franklin County10% of the district · 82% of the county
  5. Okanogan County5.6% of the district · 100% of the county
  6. Douglas County5.5% of the district · 97% of the county
  7. Klickitat County3.0% of the district · 100% of the county
  8. Adams County1.8% of the district · 69% of the county

Federal contracts

Contract obligations attributed to the district by each action's county and its award's ZIP code (land shares through census tracts); an estimate where ZIP codes cross district lines.

Obligations · FY2026
$3.9B
Per resident
$4,970
Rank in Washington
3 of 10
Contract actions
1,914
New awards: 623

By fiscal year

  1. 3.8BFY2017
  2. 3.8BFY2018
  3. 3.9BFY2019
  4. 4.1BFY2020
  5. 3.8BFY2021
  6. 3.6BFY2022
  7. 4BFY2023
  8. 4.3BFY2024
  9. 4.6BFY2025
  10. 3.9BFY2026

Top buyers

  1. Department of Energy$3.7B96%
  2. Department of the Army$46.6M1.2%
    Department of Defense
  3. Federal Emergency Management Agency$20.5M0.5%
    Department of Homeland Security
  4. Forest Service$16.1M0.4%
    Department of Agriculture
  5. Bureau of Reclamation$14.7M0.4%
    Department of the Interior
  6. Agricultural Marketing Service$7.6M0.2%
    Department of Agriculture
  7. Bureau of Land Management$6.9M0.2%
    Department of the Interior
  8. Public Buildings Service$4M0.1%
    General Services Administration

Top recipients

  1. BATTELLE MEMORIAL INSTITUTE$1.4B36%
    1 award
  2. HANFORD TANK WASTE OPERATIONS & CLOSURE, LLC$979.8M25%
    1 award
  3. BECHTEL NATIONAL, INC.$627M16%
    1 award
  4. CENTRAL PLATEAU CLEANUP COMPANY, LLC$551.2M14%
    8 awards
  5. HANFORD LABORATORY MANAGEMENT AND INTEGRATION LLC$120M3.1%
    1 award
  6. RANGER LAND SYSTEMS, INC.$20.4M0.5%
    1 award
  7. STREET LEGAL INDUSTRIES LLC$12.8M0.3%
    29 awards
  8. SEATECH GLOBAL SECURITY SOLUTIONS$12.6M0.3%
    3 awards
  9. OLSSON INDUSTRIAL ELECTRIC, INC$8M0.2%
    1 award
  10. PALOUSE POWER LLC$7.4M0.2%
    1 award

Other boundaries

District lines change between plans; each plan keeps its own page.

Sources and method

Every figure on this page traces to these records.

  • Congressional district boundaries and relationship files (U.S. Census Bureau)U.S. Census Bureau, Cartographic Boundary Files (congressional districts) and 2020 relationship files · release cd116+cd118+cd119 · loaded Oct 3, 2026 · license: Public domain (U.S. Government work, 17 U.S.C. § 105)
  • Members of Congress, their terms, committees and identifiers (The @unitedstates project (from the Biographical Directory of the U.S. Congress, the House and the Senate))unitedstates/congress-legislators: legislators, committees and current committee membership · data current to Oct 3, 2026 · loaded Oct 3, 2026 · license: CC0 1.0 (public domain dedication)
  • ZIP code (ZCTA) to congressional district crosswalk (U.S. Census Bureau)U.S. Census Bureau, 2020 relationship files (ZCTAs, tracts and congressional districts); shares computed by Analisa · release 2020 · loaded Oct 3, 2026 · license: Public domain (U.S. Government work, 17 U.S.C. § 105)
  • Federal contract transactions (Federal Procurement Data System) (U.S. Department of the Treasury, USAspending.gov)USAspending.gov, prime award contract transactions (FPDS) · data current to Oct 9, 2026 · loaded Oct 9, 2026 · license: Public domain (U.S. Government work, 17 U.S.C. § 105)
  • Money and votes are shown side by side; neither explains the other.