Unknown & Unclassified nonprofits
Unknown & Unclassified nonprofits. Browse 557,756 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.
Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.
Nonprofit profiles
- Sigma Chi Fraternity Delta Mu Chapter
EIN 756061665 · Headquarters: Dallas, TX, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990
- Sigma Chi Fraternity Delta Omega Chapter
EIN 730605005 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Delta Rho Chapter
EIN 371220563 · Headquarters: Peoria, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi Fraternity Delta Upsilon Chapter Inc
EIN 480906286 · Headquarters: LEWISVILLE, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi Fraternity Epsilon Nu Chapter Texas Tech University
EIN 756036564 · Headquarters: LUBBOCK, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi Fraternity Epsilon Psi
EIN 746085531 · Headquarters: Huntsville, TX, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Epsilon Theta Chapter
EIN 941242287 · Headquarters: San Jose, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Eta Alpha Chapter
EIN 237068692 · Headquarters: Richmond, KY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Eta Delta Chapter
EIN 237109439 · Headquarters: Cookeville, TN, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Sigma Chi Fraternity Eta Omega Chapter
EIN 742020367 · Headquarters: Waco, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Sigma Chi Fraternity Eta Sigma Chapter
EIN 050537527 · Headquarters: IRVINE, CA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- Sigma Chi Fraternity Eta Upsilon Chapter
EIN 510207538 · Headquarters: College Station, TX, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990
- Sigma Chi Fraternity Eta Xi Chapter
EIN 237325341 · Headquarters: Clarksville, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Foundation Inc C/o Lm Henderson & Company Llp
EIN 356044345 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Sigma Chi Fraternity Gamma Epsilon Chap Whitman College
EIN 910564940 · Headquarters: WALLA WALLA, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi Fraternity Gamma Nu Chapter
EIN 844652763 · Headquarters: Columbia, SC, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990
- Sigma Chi Fraternity Gamma Theta Chapter Inc
EIN 590626226 · Headquarters: TUSCALOOSA, AL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi Fraternity Gamma Upsilon Chapter
EIN 640368061 · Headquarters: MISSISSIPPI STATE, MS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi Fraternity Housing Corp-f
EIN 770005955 · Headquarters: FRESNO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- SIGMA CHI FRATERNITY Iota Iota Chapter UNIV OF Alabama
EIN 630289650 · Headquarters: Tuscaloosa, AL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi Fraternity Iota Sigma Chapter
EIN 351881856 · Headquarters: VALPARAISO, IN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Iota Xi Chapter
EIN 541717340 · Headquarters: Oakton, VA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Kappa Kappa Chapter
EIN 370516290 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi Fraternity Kappa Theta Chapter
EIN 680385733 · Headquarters: Chico, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Lambda Alpha Chapter
EIN 300383851 · Headquarters: GALESBURG, IL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Lambda Chapter University of Kentucky
EIN 610447633 · Headquarters: LEXINGTON, KY, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- Sigma Chi Fraternity Lambda Omega Chapter
EIN 464171039 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Lambda Pi Chapter
EIN 274852169 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Mu Alpha
EIN 475636183 · Headquarters: CHARLOTTE, NC, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- Sigma Chi Fraternity Mu Beta Chapter Cal State U San Marcos
EIN 474947496 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Sigma Chi Fraternity Mu Mu Chapter
EIN 550276990 · Headquarters: MORGANTOWN, WV, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi Fraternity of Missouri House C
EIN 430519020 · Headquarters: ST LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi Fraternity Pi Chapter
EIN 363385964 · Headquarters: BIRMINGHAM, AL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Sigma Chi Fraternity Tabard Corporation
EIN 020190225 · Headquarters: Plainview, NY, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990
- Sigma Chi Fraternity Tau Tau Chapter
EIN 430670138 · Headquarters: Saint Louis, MO, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Theta Chapter
EIN 231151025 · Headquarters: GETTYSBURG, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Theta Mu Chapter
EIN 363385967 · Headquarters: MOBILE, AL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity Theta Rho Chapter
EIN 844269089 · Headquarters: Normal, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Sigma Chi Fraternity University of Missouri-columbia
EIN 882015360 · Headquarters: Columbia, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Chi Fraternity University of South Alabama
EIN 237112808 · Headquarters: MOBILE, AL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Sigma Chi Fraternity Upsilon Upsilon Chapter
EIN 910410730 · Headquarters: SEATTLE, WA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990
- Sigma Chi Fraternity Xi Chapter
EIN 356070821 · Headquarters: GREENCASTLE, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi Fraternity Zeta Phi Chapter New Mexico State
EIN 432061238 · Headquarters: LAS CRUCES, NM, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Sigma Chi Fraternity Zeta Tau Chapter
EIN 480734548 · Headquarters: ELLINWOOD, KS, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990
- Sigma Chi Fraternity Zeta Theta Chapter
EIN 381472628 · Headquarters: FLUSHING, MI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi Gamma Chi Inc
EIN 271499492 · Headquarters: Olney, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Sigma Chi Gamma Psi
EIN 883708100 · Headquarters: East Lansing, MI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Sigma Chi Home Association of Northwestern
EIN 366110483 · Headquarters: EVANSTON, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi House Corp of Dallas
EIN 751889058 · Headquarters: McKinney, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi House Corp of Troy State University
EIN 630847855 · Headquarters: PIKE ROAD, AL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Chi House Corporation Bonnstetter
EIN 311016806 · Headquarters: MORGANTOWN, WV, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi House Corporation C/o James Felts
EIN 431307232 · Headquarters: ROLLA, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi House Corporation Inc Zeta Lambda
EIN 340970155 · Headquarters: WESTERVILLE, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Sigma Chi Housing Corporation
EIN 351045962 · Headquarters: MUNCIE, IN, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990
- Sigma Chi International Fraternity House Association of Zeta Iota Chapter
EIN 237132214 · Headquarters: Louisburg, KS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi International Fraternity Inc
EIN 361773960 · Headquarters: Evanston, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi Lambda
EIN 863345765 · Headquarters: Newark, DE, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Chi Memorial Founditon - Delta Epsilon
EIN 237413002 · Headquarters: RALEIGH, NC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Sigma Chi New Haven Alumni Chapter
EIN 871767285 · Headquarters: Burlington, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Sigma Chi of Colgate Inc
EIN 205792030 · Headquarters: HAMILTON, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Sigma Chi of Cornell Alumni Association
EIN 166070759 · Headquarters: ITHACA, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Chi of Wabash College Inc
EIN 356042904 · Headquarters: FRANKFORT, IN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Chi Omega Chapter
EIN 361773970 · Headquarters: EVANSTON, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Sigma Chi Omicron Omicron Foundation Inc
EIN 831892770 · Headquarters: Springfield, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Chi Parents Club
EIN 922038627 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Chi Tau
EIN 844918308 · Headquarters: Fulton, MO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Sigma Chi-mu Delta Chapter
EIN 834642342 · Headquarters: Richmond, VA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Sigma Chi-zeta Mu
EIN 464230662 · Headquarters: Bowling Green, KY, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Sigma Delta Chi Foundation of Washington Dc
EIN 526055635 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Sigma Delta Epsilon Graduate Women in Science Inc
EIN 240825560 · Headquarters: NEW YORK, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Sigma Delta Epsilon Graduate Women in Science Inc
EIN 256064406 · Headquarters: University Park, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Women in Science Inc
EIN 330250384 · Headquarters: Long Beach, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Women in Science Inc
EIN 363621115 · Headquarters: Everett, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Women in Science Inc
EIN 396077394 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Women in Science Inc
EIN 416039171 · Headquarters: Saint Anthony, MN, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Women in Science Inc
EIN 526055597 · Headquarters: Woodstock, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens in Science Inc
EIN 991507745 · Headquarters: Richardson, TX, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 352651454 · Headquarters: St Louis, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 453034813 · Headquarters: Lexington, KY, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 454418096 · Headquarters: Auburn University, AL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 455041202 · Headquarters: Hershey, PA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 463187339 · Headquarters: Alexandria, VA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 463606854 · Headquarters: East Lansing, MI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 464183279 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 471660658 · Headquarters: Iowa City, IA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 800666145 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 813808249 · Headquarters: Greenville, NC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 813819501 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 814636513 · Headquarters: Frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 825256628 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 825305152 · Headquarters: Celebration, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 830792767 · Headquarters: Charleston, SC, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 842450016 · Headquarters: Newark, DE, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 843213051 · Headquarters: Rolla, MO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon Graduate Womens Scientific Frat
EIN 900510700 · Headquarters: Durham, NC, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Sigma Delta Epsilon-graduate Women in Science Inc
EIN 831901616 · Headquarters: Phoenix, AZ, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Sigma Delta Espilon Graduate Womens Scientific Frat
EIN 472136805 · Headquarters: Fort Collins, CO, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Sigma Delta Holding Corporation
EIN 161662507 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Sigma Delta Kappa Intercollegiate Law Fraternity
EIN 521467465 · Headquarters: PASADENA, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Sigma Delta Kappa Law Foundation Inc
EIN 521584527 · Headquarters: Pasadena, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N