| 1 | IA Department of Human Services · Des Moines | State and local governments | 252 | $31 billion |
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| 2 | Iowa Department of Transportation · Ames | State and local governments | 2,469 | $4.3 billion |
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| 3 | Department of Education Iowa · Des Moines | State and local governments | 159 | $4.2 billion |
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| 4 | The University of Iowa · Iowa City | Colleges and universities | 1,324 | $1.3 billion |
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| 5 | Iowa Department of Public Health · Des Moines | State and local governments | 198 | $1.1 billion |
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| 6 | Iowa Department of Natural Resources · Des Moines | State and local governments | 334 | $843 million |
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| 7 | Iowa Homeland Security and Emergency Management Department · Windsor Heights | State and local governments | 71 | $833 million |
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| 8 | Iowa State University of Science and Technology · Ames | Colleges and universities | 1,118 | $825 million |
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| 9 | Iowa Department Management · Des Moines | State and local governments | 6 | $627 million |
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| 10 | Economic Development Authority Iowa · Des Moines | State and local governments | 32 | $592 million |
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| 11 | Department of Human Rights Iowa · Des Moines | State and local governments | 24 | $509 million |
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| 12 | Workforce Development Center · Des Moines | State and local governments | 115 | $439 million |
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| 13 | Iowa Department of Public Defense · Johnston | State and local governments | 81 | $289 million |
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| 14 | Des Moines Airport Authority · Des Moines | State and local governments | 31 | $180 million |
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| 15 | Iowa State of Iowa Veterans Home · Marshalltown | State and local governments | 7 | $124 million |
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| 16 | Iowa Finance Authority · Des Moines | State and local governments | 25 | $121 million |
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| 17 | Dept of Pub Safety · Des Moines | State and local governments | 118 | $103 million |
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| 18 | Iowa Soybean Association · Ankeny | Nonprofits | 6 | $99.6 million |
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| 19 | The Krell Institute Inc · Ames | Nonprofits | 9 | $94.3 million |
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| 20 | Iowa Department on Aging · Des Moines | State and local governments | 57 | $92.9 million |
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| 21 | Primary Health Care, Inc · Des Moines | Nonprofits | 29 | $88.4 million |
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| 22 | Des Moines Regional Transit Authority · Des Moines | Other | 18 | $86.5 million |
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| 23 | Wisconsin Power and Light Company · Cedar Rapids | Businesses | 2 | $80.7 million |
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| 24 | Drake University · Des Moines | Colleges and universities | 21 | $74.4 million |
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| 25 | Department of Education Iowa · Des Moines | State and local governments | 15 | $73.5 million |
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| 26 | City of Des Moines · Des Moines | State and local governments | 144 | $70.2 million |
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| 27 | Cedar Rapids Airport Commission · Cedar Rapids | State and local governments | 24 | $69.3 million |
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| 28 | Iowa Department of Agriculture and Land Stewardship · Des Moines | State and local governments | 105 | $66.6 million |
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| 29 | Iowa State Department of Justice · Des Moines | State and local governments | 31 | $63.7 million |
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| 30 | University of Northern Iowa · Cedar Falls | Colleges and universities | 50 | $62.9 million |
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| 31 | Hawkeye Area Community Action Program, Inc. · Hiawatha | Nonprofits | 26 | $62.8 million |
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| 32 | Des Moines Area Community College · Ankeny | State and local governments | 23 | $61.2 million |
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| 33 | City of Cedar Rapids · Cedar Rapids | State and local governments | 39 | $52.1 million |
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| 34 | City of Dubuque · Dubuque | State and local governments | 43 | $49.5 million |
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| 35 | City of Davenport · Davenport | State and local governments | 50 | $48.4 million |
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| 36 | Kirkwood Community College Foundation · Cedar Rapids | State and local governments | 11 | $45.8 million |
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| 37 | Tri-County Child and Family Development Council, I · Waterloo | Nonprofits | 4 | $42.0 million |
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| 38 | Volunteer Service, Iowa Commission on · Des Moines | State and local governments | 20 | $42.0 million |
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| 39 | Greenfield Nitrogen, LLC. · Garner | Other | 1 | $40.0 million |
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| 40 | Mid American Energy Company · Davenport | Businesses | 1 | $37.8 million |
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| 41 | State of Iowa Department for Blind · Des Moines | State and local governments | 15 | $36.2 million |
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| 42 | Upper Des Moines Opportunity Inc · Graettinger | Nonprofits | 5 | $36.2 million |
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| 43 | Community Health Care, Inc. · Davenport | Other | 8 | $34.5 million |
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| 44 | Institute for Community Alliances · Des Moines | State and local governments | 210 | $31.0 million |
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| 45 | Proteus Inc. · Des Moines | Nonprofits | 23 | $31.0 million |
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| 46 | Iowa Department of Health and Human Services · Des Moines | State and local governments | 25 | $29.8 million |
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| 47 | Siouxland Community Health Center · Sioux City | Other | 7 | $29.6 million |
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| 48 | Community Action of Eastern Iowa · Davenport | Nonprofits | 2 | $29.5 million |
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| 49 | City of Ames · Ames | State and local governments | 14 | $28.9 million |
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| 50 | Hawkeye Community College · Waterloo | Nonprofits | 16 | $28.8 million |
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| 51 | Community Action Agency of Siouxland · Sioux City | Nonprofits | 3 | $28.1 million |
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| 52 | Community Opportunities, Inc · Carroll | Nonprofits | 5 | $27.6 million |
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| 53 | Cedar Rapids and Iowa City Railway Company · Cedar Rapids | Businesses | 3 | $27.5 million |
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| 54 | River Hills Community Health Center, Inc · Ottumwa | Other | 8 | $26.2 million |
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| 55 | East Central Intergovernmental Association · Dubuque | State and local governments | 15 | $25.8 million |
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| 56 | Indian Hills Community College · Ottumwa | Colleges and universities | 18 | $25.1 million |
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| 57 | Western Iowa Tech Community College Foundation · Sioux City | Colleges and universities | 17 | $23.9 million |
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| 58 | West Central Community Action · Harlan | Nonprofits | 3 | $23.6 million |
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| 59 | Eastern Iowa Community College District · Davenport | State and local governments | 14 | $23.4 million |
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| 60 | Iowa Western Community College · Council Bluffs | Colleges and universities | 8 | $22.9 million |
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| 61 | Sac & Fox Tribe of the Mississippi in Iowa · Tama | Tribal governments and organizations | 73 | $22.6 million |
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| 62 | Peoples Community Health Clinic, Inc. · Waterloo | Other | 7 | $22.6 million |
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| 63 | Mason City Airport Commission · Mason City | State and local governments | 10 | $22.0 million |
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| 64 | City of Iowa City · Iowa City | State and local governments | 9 | $21.6 million |
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| 65 | Iowa Central Community College · Fort Dodge | State and local governments | 7 | $21.2 million |
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| 66 | Community Action of Southeast Iowa · Burlington | Nonprofits | 3 | $21.1 million |
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| 67 | Mid-Iowa Community Action Mica, Inc · Marshalltown | Nonprofits | 4 | $20.6 million |
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| 68 | Big River Resources, LLC. · West Burlington | Other | 2 | $20.5 million |
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| 69 | City of Perry · Perry | State and local governments | 13 | $19.1 million |
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| 70 | North Iowa Community Action · Mason City | Nonprofits | 3 | $18.7 million |
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| 71 | Community Health Centers of Southeastern Iowa Inc · West Burlington | Other | 7 | $18.1 million |
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| 72 | Northeast Iowa Community Action Corp · Decorah | Nonprofits | 3 | $17.7 million |
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| 73 | City of Sioux City · Sioux City | State and local governments | 17 | $17.6 million |
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| 74 | Mid-Sioux Opportunity, Inc. · Remsen | Nonprofits | 2 | $17.5 million |
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| 75 | City of Dubuque Housing Division · Dubuque | State and local governments | 14 | $17.1 million |
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| 76 | Fayette County IA · West Union | State and local governments | 2 | $17.1 million |
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| 77 | Cedar Rapids Community School District Foundation · Cedar Rapids | Other | 2 | $17.0 million |
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| 78 | Infinity Health · Leon | Nonprofits | 8 | $17.0 million |
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| 79 | All Care Health Center · Council Bluffs | Other | 8 | $16.9 million |
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| 80 | Northeast Iowa Community College · Calmar | Colleges and universities | 10 | $16.8 million |
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| 81 | Sioux City City of Community Development · Sioux City | State and local governments | 30 | $16.4 million |
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| 82 | Iowa Northern Railway Company · Waterloo | Businesses | 3 | $15.9 million |
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| 83 | Region XII Council of Governments, Inc. · Carroll | State and local governments | 8 | $15.7 million |
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| 84 | Southeastern Community College · West Burlington | State and local governments | 12 | $15.6 million |
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| 85 | North Iowa Area Community College · Mason City | Colleges and universities | 11 | $15.2 million |
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| 86 | Organic Farmers Association · Okoboji | Nonprofits | 2 | $15.1 million |
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| 87 | Polk County · Des Moines | State and local governments | 13 | $15.1 million |
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| 88 | State of Iowa Department of Inspections Appeals and Licensing · Des Moines | State and local governments | 17 | $15.1 million |
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| 89 | Morningside University · Sioux City | Colleges and universities | 12 | $14.5 million |
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| 90 | Southern Iowa Economic Development Association · Ottumwa | Nonprofits | 2 | $14.4 million |
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| 91 | Your Own United Resources, Inc. · Fort Dodge | Nonprofits | 2 | $14.0 million |
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| 92 | City of Sioux City · Sioux City | State and local governments | 9 | $13.8 million |
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| 93 | University of Dubuque · Dubuque | Colleges and universities | 6 | $13.7 million |
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| 94 | Community Health Center of Fort Dodge, Inc. · Fort Dodge | Other | 6 | $13.5 million |
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| 95 | Central College · Pella | Colleges and universities | 10 | $13.5 million |
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| 96 | Northeast Iowa Area Agency on Aging Inc · Waterloo | Nonprofits | 4 | $13.4 million |
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| 97 | Upper Iowa University · Fayette | Colleges and universities | 6 | $13.2 million |
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| 98 | Greater Sioux Community Health Center, Inc. · Sioux Center | Other | 10 | $13.0 million |
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| 99 | Waterloo, City of · Waterloo | State and local governments | 15 | $12.9 million |
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| 100 | Iowa Association of Soil Conservation District Commissioners · Des Moines | Nonprofits | 4 | $12.7 million |
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