US Retirement Plan Intelligence
Form 5500 plan-level data for ~700,000 ERISA-covered retirement plans, IRS contribution-limit lookups (Pub 560/590-A/590-B with SECURE 2.0 RMD ages), and SSA full-retirement-age tables, refreshed when DOL EBSA, IRS, and SSA publish new annual data.
PlainRetire tracks 122,942 U.S. retirement plans holding $11.6 trillion in assets for 90 million participants, sourced from U.S. Department of Labor Form 5500 annual filings (2024 plan year). Look up any employer's retirement plan by name, compare plans by state or industry, or use the IRS/SSA contribution-limit and retirement-age calculators.
The national picture
401(k) plans dominate America's private retirement system by count - 90,872 of 122,942 reported plans, while only 6,012 traditional defined-benefit pensions remain in the data.
- $11.6T
- total plan assets (2024)
- 90M
- covered participants
- 74%
- of plans are 401(k)s
- $73.9B
- largest single plan (Boeing)
Source: U.S. Department of Labor Form 5500 Annual Reports (2024 plan year, the most recent complete filing cycle).
PlainRetire makes DOL Form 5500 retirement plan data accessible and searchable. Every employer-sponsored retirement plan in the US files an annual report with the Department of Labor disclosing assets, participants, and financial condition. We transform those filings into a modern interface that lets you look up any plan, compare it to industry peers, and understand what the data means for retirement security.
Whether you are evaluating your own employer's 401(k), researching retirement plan trends for a specific industry, or comparing plan generosity across states, PlainRetire provides the data you need, sourced directly from official federal filings.
Largest Retirement Plans
View all →Source: DOL Form 5500, 2024 plan year, ranked by end-of-year total assets.
| # | Plan Name | Sponsor | State | Type | Participants | Total Assets |
|---|---|---|---|---|---|---|
| 1 | The Boeing Company 401(k) Retirement Plan | The Boeing Co. and Consolidated Subsidiaries | WA | 401(k) | 139,394 | $73.9B |
| 2 | Microsoft Corporation Savings Plus 401(k) Plan | Microsoft Corporation | WA | 401(k) | 118,818 | $65.6B |
| 3 | The Bank of America 401(k) Plan | Bank of America Corporation | NC | 401(k) | 168,963 | $62.9B |
| 4 | IBM 401(k) Plan | International Business Machines Corporation | NY | 401(k) | 52,674 | $60.4B |
| 5 | Rtx Savings Plan | Rtx Corporation | CT | 401(k) | 124,876 | $58.6B |
| 6 | Wells Fargo & Company 401(k) Plan | Wells Fargo & Company | MN | 401(k) | 179,076 | $57.9B |
| 7 | Western Conference of Teamsters Pension Plan | Western Conference of Teamsters Pension Trust Fund Board of Trustees | WA | Defined Benefit (Pension) | 231,156 | $56.4B |
| 8 | JPMorgan Chase 401(k) Savings Plan | JPMorgan Chase Bank, National Association | NJ | 401(k) | 185,532 | $52.9B |
| 9 | Lockheed Martin Corporation Salaried Savings Plan | Lockheed Martin Corporation | MD | 401(k) | 96,812 | $51.4B |
| 10 | Walmart 401(k) Plan | Walmart Inc. | AR | 401(k) | 1,635,899 | $50.8B |
| 11 | Google LLC 401(k) Savings Plan | Google LLC | CA | 401(k) | 116,712 | $48.7B |
| 12 | Central States, Southeast & Southwest Areas Pension Plan | Trustees of Central States, Se and Sw Areas Pension Fund | IL | Defined Benefit (Pension) | 36,799 | $48.2B |
| 13 | AT&T Retirement Savings Plan | AT&T Inc. | TX | 401(k) | 109,889 | $43.1B |
| 14 | Rtx Consolidated Pension Plan | Rtx Corporation | CT | Defined Benefit (Pension) | 36,180 | $41.6B |
| 15 | Costco 401(k) Retirement Plan | Costco Wholesale Corporation | WA | 401(k) | 202,468 | $41.0B |
| 16 | Northrop Grumman Savings Plan | Northrop Grumman Corporation | VA | 401(k) | 104,719 | $39.5B |
| 17 | State Farm Insurance Companies Retirement Plan for United States Employees | State Farm Mutual Automobile Insurance Company | IL | Defined Benefit (Pension) | 41,619 | $37.7B |
| 18 | Amazon 401(k) Plan | Amazon.Com Services, LLC | WA | 401(k) | 1,209,303 | $34.6B |
| 19 | Kaiser Permanente Retirement Plan | Kaiser Foundation Health Plan, Inc. | CA | Defined Benefit (Pension) | 135,057 | $34.5B |
| 20 | Fidelity Retirement Savings Plan | Fmr LLC | MA | 401(k) | 66,907 | $34.2B |
Plan Size Distribution (2024)
Plans by Size Bucket
| Size Category | Plan Count | Total Assets |
|---|---|---|
| Micro (1-10 participants) | 32,081 | $38.0B |
| Small (11-100 participants) | 24,625 | $235.2B |
| Medium (101-1,000 participants) | 51,113 | $1.8T |
| Large (1,001-10,000 participants) | 9,862 | $3.8T |
| Mega (10,000+ participants) | 1,337 | $5.7T |
Retirement Plans by Industry
View all →Source: DOL Form 5500, 2024 plan year, aggregated by self-reported industry classification.
Retirement Plans by State
All states →Explore plan counts, participant totals, and total plan assets for all 50 states. View state rankings →
Source: DOL Form 5500, 2024 plan year, by sponsor headquarters state.
The 20 states with the most plan assets, plotted by total assets against total participants. Bubble size tracks plan count; the crosshair marks the median state on each axis.
What the data shows
Three patterns worth knowing before you drill into a plan, state, or industry.
- Mega (10,000+ participants) plans are just 1.1% of all filings by count, but hold 49% of total plan assets, most retirement money sits in a small number of very large plans. See the largest plans
- Professional & Technical Services alone accounts for 12% of all plan assets in the dataset, the single largest industry concentration. View Professional & Technical Services
- 90,872 plans are 401(k)s, but plan type alone doesn't tell you about fees, match, or investment menu, compare two plan types side-by-side to see how they differ structurally. Compare plan types
Figures reflect employer-reported Form 5500 filings for the most recent complete plan year; government, church, and single-participant (Form 5500-EZ) plans are outside DOL's public dataset and not included.
Understanding Retirement Plan Data
DOL Form 5500 filings contain valuable information about retirement plans, but interpreting them requires context. These guides explain how to read the data, what the key metrics mean, and how to evaluate your own plan against industry benchmarks.
How to Read a Form 5500
What each section of the filing means and where to find the key numbers.
Understanding Plan Fees
How fees compound over decades and how to benchmark your plan's costs.
401(k) vs. Defined Benefit Pension
The fundamental differences between defined contribution and defined benefit plans.
What Is an ESOP?
How Employee Stock Ownership Plans work and what Form 5500 reveals about them.
Retirement Plans by State
Which states lead in plan coverage and what drives the geographic variation.
PlainRetire presents DOL Form 5500 retirement plan filings for informational purposes only. This site does not provide investment, retirement planning, or fiduciary advice. Consult a qualified financial advisor or plan administrator for decisions about your retirement savings.
About this data
How PlainRetire works, and why you can trust these numbers
What this site is
PlainRetire makes U.S. employer-sponsored retirement plan data freely searchable, covering 122,942 ERISA-covered plans across 401(k), defined benefit, profit-sharing, ESOP and money purchase types.
Editorial process
- Source. Download the Department of Labor's Employee Benefits Security Administration (DOL EBSA) Form 5500 public disclosure dataset, the federal annual report every ERISA-covered retirement plan must file.
- Verify. Parse plan sponsor, participant counts, asset values and Schedule H financial detail exactly as filed, with nothing inferred or added.
- Publish. Aggregate plan-level filings into industry, state and plan-size breakdowns so every figure traces back to the underlying Form 5500 filing.
Editorial independence & corrections
The PlainRetire editorial team is independent and accepts no payment, sponsorship, or promoted placement from any plan sponsor or provider. Found an error or an outdated filing? File a correction via the contact page, and we respond within 72 hours and publish corrections with a visible revision note. See our methodology for full source attribution and refresh cadence.
Frequently asked
What is Form 5500?
Form 5500 is an annual report that retirement plan sponsors must file with the U.S. Department of Labor (DOL). It discloses plan assets, participants, investments, and financial condition. Plans with 100+ participants file Form 5500; smaller plans file Form 5500-SF.
What types of retirement plans are included?
PlainRetire covers all employer-sponsored retirement plans: 401(k) plans, defined benefit (traditional pension) plans, profit-sharing plans, ESOPs, money purchase plans, and IRA-based plans.
How current is the data?
PlainRetire uses the 2024 plan year data (the most recent year with complete asset-reporting coverage), with earlier plan years also available for trend comparison. Plan filings are typically due 7 months after the plan year ends, with many sponsors filing extensions that push final data availability out further.
Why are some large plans not listed?
PlainRetire covers all 122,942 ERISA-covered plans that filed a Form 5500 for the 2024 plan year. Government plans (such as federal, state, and local pension plans) are generally not required to file Form 5500 and are not included.
Where does this data come from?
All data comes directly from the U.S. Department of Labor Employee Benefits Security Administration (DOL EBSA) Form 5500 public disclosure database.