Illinois 401(k) plans

Name: Illinois 401(k) plans: assets, participants and plan-paid fees
Creator: 401(k) Monitor
License: https://401kmonitor.com/licence/

2,805

Large 401(k) plans headquartered in Illinois are in 401(k) Monitor’s published set, holding $450.4B in total, led on headcount by Walgreens Retirement Savings Plan with 215,583 active participants. Computed from DOL Form 5500 filings, plan years 2019–2025.

State means the sponsor’s address on the filing, not where employees work. Our published set covers 57,824 of the 57,824 large plans in the form-year-2024 DOL EFAST2 bulk data, so this is the largest-plan end of Illinois, not a census of it.

120 of the biggest 401(k) plans headquartered in Illinois

The plans this site submits to search engines come first, then the rest; each group is ranked by active participants, the people still building up a balance. plan years 2019–2025, DOL EFAST2 bulk data. Assets in USD. Every plan links to its full fact page.
#	Plan	City	Active participants	Assets
1	Walgreens Retirement Savings Plan	Deerfield	215,583	$14.5B
2	United Airlines 401(k) Savings Plan	Chicago	68,568	$10.3B
3	State Farm 401(k) Savings Plan	Bloomington	67,476	$19.0B
4	Ulta Salon Cosmetics & Fragrance 401(k) Retirement Plan	Bolingbrook	67,118	$542.0M
5	Aldi Inc. Retirement Savings Plan	Batavia	52,764	$2.1B
6	HAH Holdings, LLC 401(k) Plan	Chicago	45,383	$32.9M
7	Northwestern Memorial Employee 401(k) Pre-Tax Savings Plan	Chicago	38,348	$5.4B
8	Jones Lang LaSalle Savings And Retirement Plan	Chicago	38,221	$3.9B
9	Abbott Laboratories Stock Retirement Plan	Abbott Park	38,001	$15.8B
10	Hyatt Corporation Retirement Savings Plan	Chicago	36,196	$2.5B
11	Publicis Benefits Connection 401(k) Plan	Chicago	29,615	$5.2B
12	AbbVie Savings Plan	North Chicago	28,506	$13.4B
13	Endeavor Health 401(k) Plan	Evanston	28,506	$2.3B
14	United Airlines Flight Attendant 401(k) Plan	Chicago	27,891	$5.3B
15	US Foods 401(k) Plan	Rosemont	27,150	$2.5B
16	Addus Healthcare, Inc. 401(k) Plan	Downers Grove	25,864	$48.2M
17	Mcdonald's Corporation 401(k) Plan	Chicago	24,044	$3.7B
18	Arthur J. Gallagher & Co. Employees Savings And Thrift Plan	Rolling Meadows	23,895	$3.9B
19	Reyes Holdings Retirement Plan	Rosemont	23,445	$2.1B
20	Conagra Brands Retirement Income Savings Plan	Chicago	23,273	$1.7B
21	Medline Industries, Lp Retirement Plan	Northfield	23,198	$1.6B
22	Schneider Electric 401(k) Plan	Westmont	20,597	$5.1B
23	Exelon Corporation Employee Savings Plan	Chicago	20,243	$6.3B
24	Discover Financial Services 401(k) Plan	Riverwoods	20,237	$3.2B
25	BMO 401(k) Savings Plan	Chicago	19,696	$5.0B
26	Amalgamated Transit Union National 401(k) Pension Plan	Springfield	19,251	$267.1M
27	United Airlines Pilot Retirement Account Plan	Chicago	17,444	$16.8B
28	National Express Safe Harbor 401(k) Plan	Lisle	17,262	$129.9M
29	GE Healthcare Retirement Savings Plan	Chicago	16,733	$10.5B
30	Itw Savings And Investment Plan	Glenview	15,573	$4.2B
31	Lkq Corporation Employees' Retirement Plan	Chicago	15,267	$727.8M
32	Select Rehabilitation, LLC 401(k) Plan And Trust	Glenview	15,130	$279.0M
33	Marmon Employees' Retirement Plan	Chicago	14,175	$1.7B
34	Rr Donnelley Savings Plan	Chicago	13,854	$1.4B
35	Hub International Limited 401(k) Savings Plan	Chicago	13,429	$1.6B
36	Sp+ 401(k) Savings Plan	Chicago	13,164	$202.6M
37	Great Wolf Resorts 401(k) Plan	Chicago	12,864	$62.2M
38	Freedomrewards 401(k) Plan	Lincolnshire	12,773	$341.7M
39	Constellation Software (U.S.A.) Inc. Retirement Savings Plan	Chicago	12,475	$1.6B
40	Transdev North America, Inc. 401(k) Plan For Collectively Bargained Employees	Lombard	11,846	$160.2M
41	Packaging Corporation Of America Thrift Plan For Hourly Employees	Lake Forest	11,794	$1.3B
42	Central Laborers Annuity Plan	Jacksonville	11,412	$355.5M
43	Cdw Coworkers' Profit Sharing Plan	Vernon Hills	11,353	$2.3B
44	Gerber Collision & Glass 401(k) Plan	Elmhurst	11,273	$197.8M
45	Dover Corporation Retirement Savings Plan	Downers Grove	11,251	$1.9B
46	Encore Group (USA) LLC Retirement Savings Plan	Schiller Park	10,531	$453.2M
47	Adm 401(k) And Employee Stock Ownership Plan For Hourly Employees	Decatur	10,315	$701.5M
48	Ace Retail Savings Plan 401(k)	Oak Brook	10,227	$188.2M
49	Motorola Solutions 401(k) Plan	Chicago	10,200	$6.5B
50	Ori 401(k) Savings And Profit Sharing Plan	Chicago	9,784	$2.1B
51	Claire's Stores Inc. 401(k) Savings And Retirement Plan	Hoffman Estates	9,741	$52.6M
52	Zurich Savings Plan	Schaumburg	9,738	$3.7B
53	The Northern Trust Company Thrift-Incentive Plan	Chicago	9,702	$3.3B
54	Portillo's Hot Dogs, LLC 401(k) Plan	Oak Brook	9,636	$27.5M
55	Paramount Staffing Perm, LLC 401(k) Plan	Northbrook	9,449	$3.2M
56	Pipe Fitters Association L.U. 597, U.A. 401(k) Pla	Chicago	9,410	$2.5B
57	Brunswick Rewards Plan	Mettawa	9,351	$1.8B
58	Bdo USA Retirement Plan	Chicago	9,138	$1.9B
59	Athletico, Ltd. Employees Profit Sharing Plan	Oak Brook	9,048	$410.3M
60	Hearthside Food Solutions 401(k) Plan	Downers Grove	8,997	$280.1M
61	Employee Savings Plan	Lake Forest	8,977	$1.0B
62	Conagra Brands Retirement Income Savings Plan For Union Employees	Chicago	8,921	$224.2M
63	Adm 401(k) And Employee Stock Ownership Plan For Salaried Employees	Decatur	8,748	$2.3B
64	Stericycle, Inc. 401(k) Retirement Plan	Bannockburn	8,738	$417.5M
65	Wolters Kluwer 401(k) Plan	Riverwoods	8,693	$2.4B
66	Oak Street Health, 401(k) Plan	Chicago	8,665	$199.0M
67	United Service Companies 401(k) Plan	Chicago	8,185	$9.5M
68	Option Care Health 401(k) Plan	Bannockburn	7,984	$412.6M
69	Memorial Health System Defined Contribution Retirement Savings Plan	Springfield	7,980	$719.0M
70	Alight Solutions LLC 401(k) Plan (Fka Hewitt Associates LLC 401(k) Plan)	Chicago	7,865	$2.5B
71	Kehe Distributors, Inc. 401(k) Retirement Savings Plan	Naperville	7,832	$326.1M
72	Cooper's Hawk Intermediate Holding, LLC 401(k) Plan	Downers Grove	7,794	$27.0M
73	Transdev North America, Inc. 401(k) Plan For Non-Collectively Bargained Employees	Lombard	7,404	$152.5M
74	Crate & Barrel Holdings, Inc. Retirement Savings Plan	Northbrook	7,357	$343.4M
75	Canadian National Railway Company Savings Plan For U.S. Operations	Homewood	7,289	$767.4M
76	Mondelez Global LLC Thrift Plan	Chicago	7,270	$1.8B
77	Kemper Corporation 401(k) Retirement Plan	Chicago	7,115	$887.5M
78	Iuoe Local 399 Participating Employers Deferred Compensation Employee Savings Plan	Chicago	7,078	$345.8M
79	Koch Meat Co., Inc. 401(k) Plan	Park Ridge	7,046	$101.5M
80	Flex-N-Gate Corporation 401(k) Plan	Urbana	7,018	$405.0M
81	Ace Hardware Corporation 401(k) Savings And Retirement Plan	Oak Brook	6,953	$1.2B
82	Kellanova Savings And Investment Plan	Chicago	6,944	$1.8B
83	Legacy Healthcare 401(k) Retirement Plan	Skokie	6,840	$104.8M
84	Ati Holdings, LLC 401(k) Profit Sharing Plan	Downers Grove	6,837	$274.4M
85	Grant Thornton Advisors LLC 401(k) Savings Plan	Chicago	6,827	$1.7B
86	Hsbc - North America (U. S.) Tax Reduction Investment Plan	Chicago	6,598	$4.9B
87	Duly Health And Care 401(k) Plan	Downers Grove	6,585	$1.1B
88	Baker Tilly Advisory Group Parent, Lp Savings Plan	Chicago	6,535	$1.3B
89	Usg Corporation Investment Plan	Chicago	6,416	$1.0B
90	Hgs 401(k) Retirement Plan	Peoria	6,393	$13.8M
91	Prairie Farms Dairy Thrift Incentive Plan	Edwardsville	6,358	$637.6M
92	Paylocity 401(k) Profit Sharing Plan And Trust	Schaumburg	6,287	$438.1M
93	Molex Retirement And Savings Plan	Lisle	6,224	$1.3B
94	Hub Group Employee Profit Sharing And Trust Plan	Oak Brook	6,161	$267.5M
95	The Middleby Corporation Profit Sharing Plan	Elgin	6,144	$378.0M
96	Infinity Healthcare Mgmt. 401(k) Plan	Harwood	6,007	$11.6M
97	Rate Holdings Corp. Multiple Employer 401(k) Plan	Chicago	5,942	$525.8M
98	Plumbers' Retirement Savings Fund, Local 130, U.A.	Chicago	5,911	$448.5M
99	Kirkland & Ellis LLP Defined Contribution 401(k) Savings Plan	Chicago	5,880	$2.7B
100	Wintrust Financial Corporation Retirement Savings Plan	Rosemont	5,806	$797.6M
101	International Motors, LLC 401(k) Retirement Plan	Lisle	5,771	$1.5B
102	Convergint Technologies LLC 401(k) Profit-Sharing Plan	Hoffman Estates	5,765	$376.3M
103	Capgemini Financial Services USA, Inc. 401(k) Retirement Plan	Rosemont	5,757	$519.6M
104	Lettuce Entertain You Employee Savings Plan	Chicago	5,751	$66.7M
105	Heico Holding, Inc. 401(k) Plan	Warrenville	5,714	$437.5M
106	Cna 401(k) Plan	Chicago	5,585	$2.5B
107	Ul Financial Security Plan	Northbrook	5,568	$2.0B
108	Rb Global Retirement Plan	Westchester	5,465	$324.5M
109	Hydro Extrusion USA, LLC Savings Plan	Rosemont	5,364	$535.0M
110	Univar Solutions 401(k) Plan	Downers Grove	5,285	$1.1B
111	Fortune Brands Innovations Retirement Savings Plan	Deerfield	5,181	$824.6M
112	North American Lighting, Inc. Command Plus Plan	Paris	5,170	$522.4M
113	Capital Accumulation Plan	Rochelle	5,132	$187.0M
114	Senior Lifestyle Corporation 401(k) Retirement Plan	Chicago	5,024	$33.2M
115	Potbelly Sandwich Works 401(k) Plan	Chicago	5,024	$22.4M
116	Hospitality Staffing 401(k) Plan	Chicago	4,893	$25.1M
117	Ryan Specialty 401(k) Savings Plan	Chicago	4,873	$635.5M
118	The Tsi 401(k) Retirement Savings Plan	Lake Forest	4,872	$101.4M
119	Amsted Industries Employees Capital Accumulation Plan	Chicago	4,862	$834.8M
120	401(k) Retirement Plan For Reynolds Consumer Products	Lake Forest	4,796	$632.6M

Every Illinois plan, by size

The table above is the top of the list. These 13 pages hold all 2,805 plans on file from Illinois, split by how many people are in them, each ranked by active participants.

100 to 499 participants · 1,763 plans
Pages1 2 3 4 5 6 7 8
500 to 999 participants · 441 plans
Pages1 2
1,000 to 4,999 participants · 448 plans
Pages1 2
5,000 or more participants · 153 plans

401(k) fees in Illinois vs the national median

Plan-paid administrative cost per participant, plan years 2019–2025 Form 5500 filings. Medians over our published set, not the full universe.
Illinois medianAcross the 2,679 Illinois plans in our set with usable fee data.	$124.07 per participant
National medianAcross 54,783 published plans with usable fee data.	$122.17 per participant
Difference	$1.90 above the national median

Plan-paid means fees the plan itself reports on Schedule H; many employers pay providers directly, which a filing reports as $0. How to judge your own plan: are your 401(k) fees high?

Illinois employers with a match dossier

These Illinois-headquartered plans also file an SEC Form 11-K, so the employer’s match formula, vesting and eligibility are extracted on a company page.

Abbott Laboratories 401(k) match
Abbott Laboratories Stock Retirement Plan
AbbVie Inc. 401(k) match
AbbVie Savings Plan
Archer-Daniels-Midland Company 401(k) match
Adm 401(k) And Employee Stock Ownership Plan For Salaried Employees
Dover Corporation 401(k) match
Dover Corporation Retirement Savings Plan
GATX CORP 401(k) match
Gatx Corporation Salaried Employees Retirement Savings Plan
Illinois Tool Works Inc. 401(k) match
Itw Savings And Investment Plan
KELLANOVA 401(k) match
Kellanova Savings And Investment Plan
McDonald's Corporation 401(k) match
Mcdonald's Corporation 401(k) Plan

Useful links

All states
Plan counts, fees and largest plans, state by state.
The largest 401(k) plans in the US
The national ranking these state tables are drawn from.
Average 401(k) fees by plan size
Fees depend on plan size more than on state.

Cite: 401(k) Monitor, “Illinois 401(k) plans: largest plans and fees”, computed from DOL EFAST2 Form 5500 bulk data, plan years 2019–2025, published set of 57,824 plans, data as of July 28, 2026.