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NAICS 813930 · Labor Unions and Similar Labor Organizations

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Labor union in Sioux City, IA

22 labor union in Sioux City, IA; 29 within 30 miles. Every listing checked against the issuer's record, in the published order.

  1. American Federation of Labor & Congress of Industrial Orgs

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for American Federation of Labor & Congress of Industrial Orgs
    IRS exempt-organization registration
    IRS 426077758
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 426077758 → IRS search

  2. American Federation of State County & Municipal Employees

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for American Federation of State County & Municipal Employees
    IRS exempt-organization registration
    IRS 426084873
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 426084873 → IRS search

  3. American Federation of State County & Municipal Employees

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for American Federation of State County & Municipal Employees
    IRS exempt-organization registration
    IRS 521650770
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 521650770 → IRS search

  4. American Federation of State County & Municiple Employees

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for American Federation of State County & Municiple Employees
    IRS exempt-organization registration
    IRS 352596009
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 352596009 → IRS search

  5. American Postal Workers Union

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for American Postal Workers Union
    IRS exempt-organization registration
    IRS 420865108
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 420865108 → IRS search

  6. Association of Civilian Technicians Inc

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for Association of Civilian Technicians Inc
    IRS exempt-organization registration
    IRS 383745039
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 383745039 → IRS search

  7. Brotherhood of Locomotive Engineers and Trainmen

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for Brotherhood of Locomotive Engineers and Trainmen
    IRS exempt-organization registration
    IRS 426076968
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 426076968 → IRS search

  8. Communication Workers of America

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for Communication Workers of America
    IRS exempt-organization registration
    IRS 420715990
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 420715990 → IRS search

  9. International Association of Fire Fighters

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for International Association of Fire Fighters
    IRS exempt-organization registration
    IRS 426066323
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 426066323 → IRS search

  10. International Association of Machinists & Aerospace Workers

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for International Association of Machinists & Aerospace Workers
    IRS exempt-organization registration
    IRS 420793326
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 420793326 → IRS search

  11. International Association of Sheet Metal Air Rail & Transportation

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for International Association of Sheet Metal Air Rail & Transportation
    IRS exempt-organization registration
    IRS 426000487
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 426000487 → IRS search

  12. International Brotherhood of Electrical Workers

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for International Brotherhood of Electrical Workers
    IRS exempt-organization registration
    IRS 420571251
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 420571251 → IRS search

  13. National Air Traffic Controllers Association

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for National Air Traffic Controllers Association
    IRS exempt-organization registration
    IRS 421320459
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 421320459 → IRS search

  14. National Association of Letter Carriers

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for National Association of Letter Carriers
    IRS exempt-organization registration
    IRS 237372180
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 237372180 → IRS search

  15. Professional Staff Assn of Area Education Agency 12

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for Professional Staff Assn of Area Education Agency 12
    IRS exempt-organization registration
    IRS 421103481
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 421103481 → IRS search

  16. Sioux City Education Association

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for Sioux City Education Association
    IRS exempt-organization registration
    IRS 420940947
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 420940947 → IRS search

  17. Sioux City Local Labor Management Cooperation Committee

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for Sioux City Local Labor Management Cooperation Committee
    IRS exempt-organization registration
    IRS 392785637
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 392785637 → IRS search

  18. Sioux City Police Officers Association

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for Sioux City Police Officers Association
    IRS exempt-organization registration
    IRS 426057343
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 426057343 → IRS search

  19. United Brotherhood of Carpenters & Joiners of America

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for United Brotherhood of Carpenters & Joiners of America
    IRS exempt-organization registration
    IRS 420169670
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 420169670 → IRS search

  20. United Food and Commercial Workers International Union

    Active501(c)(5) labor, agricultural or horticultural organization

    Sioux City, IA

    Ask it
    Proof for United Food and Commercial Workers International Union
    IRS exempt-organization registration
    IRS 934217971
    Issuer
    IRS
    Status
    Active
    Class
    501(c)(5) labor, agricultural or horticultural organization
    Checked
    Oct 23, 2026
    Where
    Sioux City, IA · serves Iowa
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up 934217971 → IRS search

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