State retirement profile · Form 5500

Retirement Plans in Washington

According to DOL Form 5500 filings (plan year 2024), employer-sponsored 401(k), pension, and other retirement plans headquartered in Washington report the totals below.

Data updated 2026-08-06

2,450
Plans
$489.0B
Total assets
#7
By assets

$489.0B across 2,450 plans

According to DOL Form 5500 filings (plan year 2024), Washington has 2,450 employer-sponsored retirement plans holding $489.0B in total assets for 3,591,766 participants, ranking 7th nationally by plan assets, with 80% structured as 401(k)s and an average of $200M per plan.

  • 7th nationally by plan assets
  • 80% 401(k) plans

The state in one line

Washington hosts 2,450 employer-sponsored retirement plans holding $489.0B for 3,591,766 participants, the 7th-largest state by plan assets.

$489.0B
total plan assets
2,450
employer plans
$136,136
avg assets per participant
80%
of plans are 401(k)s
401(k) Plans
1,955
Participants
3,591,766

What the Form 5500 Data Shows for Washington

Washington: 2,450 employer-sponsored plans (1,955 401(k)), $489.0B aggregate assets, 3,591,766 participants. Average plan: $200M; largest is The Boeing Company 401(k) Retirement Plan at $73.9B. Leading sector by assets: Manufacturing (30%). These figures aggregate the 2,450 Form 5500 filings Washington sponsors submitted for plan year 2024, counted by sponsor headquarters rather than participant residence; a plan administered in Washington can cover workers across several states, and the methodology page details that HQ-vs-residence distinction. DOL Form 5500 methodology + HQ-vs-residence caveats →

The Boeing Company 401(k) Retirement Plan accounts for 15.1% of all Washington retirement plan assets

That concentration means Washington-wide averages can mask substantial variation outside the dominant entity. The Boeing Co. and Consolidated Subsidiaries sponsors the filing; drill into the plan page for schedules and audit detail. When one entity dominates a region's footprint, its programmatic and budget decisions effectively set policy for a majority of participants counted in this state total.

DOL Form 5500 plan year 2024

Manufacturing leads Washington plan assets (30%)

Among plans headquartered here, Manufacturing accounts for $147.5B across 345 filings, ahead of Information & Media at $76.8B. Sector mix is a Form 5500-derived signal: it reflects where sponsors file from, not where every participant lives.

DOL Form 5500 plan year 2024

Washington hosts 92 ESOP filings

Employee Stock Ownership Plans here hold $4.9B. ESOP density is uneven across states; when the count clears a meaningful floor, the ESOP ranking and industry pages are the better drill-downs than a 401(k)-only read.

DOL Form 5500 plan year 2024

Where Washington sits in the Form 5500 corpus

Washington sits in the top decile of U.S. states by Form 5500 plan assets (#7 of 56), so national rankings and peer comparisons are the useful next read.

DOL Form 5500 plan year 2024

Industry mix in Washington

Top sectors by Form 5500 plan assets for sponsors headquartered here (plan year 2024).

Industry Plans Assets
Manufacturing 345 $147.5B
Information & Media 62 $76.8B
Transportation & Warehousing 74 $67.8B
Professional & Technical Services 440 $54.4B
Retail Trade 188 $53.8B

Largest Plans in Washington

# Plan Name Type Participants Total Assets
1 The Boeing Company 401(k) Retirement Plan 401(k) 139,394 $73.9B
2 Microsoft Corporation Savings Plus 401(k) Plan 401(k) 118,818 $65.6B
3 Western Conference of Teamsters Pension Plan Defined Benefit (Pension) 231,156 $56.4B
4 Costco 401(k) Retirement Plan 401(k) 202,468 $41.0B
5 Amazon 401(k) Plan 401(k) 1,209,303 $34.6B
6 The Pension Value Plan for Employees of the Boeing Company Defined Benefit (Pension) 29,538 $23.3B
7 The Boeing Company Employee Retirement Plan Defined Benefit (Pension) 31,398 $15.4B
8 401(k) Savings Plan 401(k) 86,668 $10.1B
9 T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust 401(k) 66,624 $9.1B
10 Providence Health & Services 403(b) Value Plan 401(k) 52,776 $6.5B
11 Starbucks Corporation 401(k) Plan 401(k) 231,064 $4.9B
12 St. Joseph and Covenant Health Systems 401(k) Plan 401(k) 29,922 $4.5B
13 Nordstrom 401(k) Plan 401(k) 58,225 $4.3B
14 Locals 302 & 612 of the Iuoe - Employers Construction Industry Retirement Plan Defined Benefit (Pension) 8,695 $3.3B
15 Schweitzer Engineering Laboratories, Inc. Employee Stock Ownership Plan ESOP 4,281 $3.2B
16 Paccar Inc Savings Investment Plan 401(k) 11,793 $2.9B
17 Paccar Inc Retirement Plan Defined Benefit (Pension) 10,345 $2.7B
18 Alaska Airlines, Inc. Pilots Investment and Savings Plan 401(k) 3,490 $2.6B
19 Weyerhaeuser 401(k) Plan 401(k) 7,871 $2.4B
20 Boeing North American Retirement Plan Defined Benefit (Pension) 137 $2.3B
21 Fortive Retirement Savings Plan 401(k) 9,742 $2.1B
22 Milliman Profit Sharing and Retirement Plan 401(k) 3,594 $2.1B
23 Gciu - Employer Retirement Benefit Plan Defined Benefit (Pension) 1,253 $1.8B
24 Expedia Retirement Savings Plan 401(k) 8,260 $1.8B
25 Employee Retirement Income Plan - Hourly West Defined Benefit (Pension) 938 $1.7B

Nearby States by Retirement Plan Footprint

States ranked adjacent to Washington by total retirement plan assets.

Compare Washington side-by-side with 3 peer states →

Frequently Asked Questions

What is the largest retirement plan headquartered in Washington? ▼
The largest Form 5500 filing by assets with a headquarters address in Washington is The Boeing Company 401(k) Retirement Plan ($73.9B, 139,394 participants).
How concentrated are Washington retirement plan assets? ▼
The Boeing Company 401(k) Retirement Plan alone accounts for about 15% of the state's Form 5500 plan assets in plan year 2024. State averages can mask that concentration.
Which industry leads Washington retirement plan assets? ▼
Manufacturing leads with $147.5B across 345 plans headquartered here (30% of state plan assets).
How does Washington compare to other states for retirement plans? ▼
Washington sits in the top decile of U.S. states by Form 5500 plan assets (#7 of 56), so national rankings and peer comparisons are the useful next read.

Next read for Washington

Concentration reading

Ways to act on Washington's numbers.

Source: U.S. Department of Labor, EBSA Form 5500 public disclosure dataset. Shows the top 25 plans by total assets headquartered in Washington, out of 122,942 ERISA-covered plans nationally. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - state is the plan sponsor's headquarters state as recorded on the Form 5500 filing.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.