Nonprofit · EIN 46-6015015
SIOUX FALLS ZOO & AQUARIUM
Tax-exempt · SIOUX FALLS, SD 57104
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $16,102,971 | $12,689,578 | $3,413,393 | $37,268,172 | $2,084,358 | $35,183,814 |
| December 31, 2024 | 990 | $12,777,302 | $11,466,292 | $1,311,010 | $33,301,539 | $1,531,118 | $31,770,421 |
| December 31, 2023 | 990 | $7,505,438 | $15,675,298 | -$8,169,860 | $32,183,723 | $1,724,311 | $30,459,412 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $11,071,707
- of which government grants
- $2,000,000
- Program service revenue
- $4,026,691
- Investment income
- $964,844
- Net income from fundraising events
- $39,729
- Other revenue
- $39,729
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $182,252
- Other salaries and wages
- $3,409,943
- Salaries, compensation and benefits (total)
- $4,398,867
- Professional fundraising fees
- $0
- Accounting fees
- $68,683
- Occupancy
- $545,588
- Depreciation
- $122,723
- Program services (functional)
- $10,584,631
- Management and general (functional)
- $1,110,153
- Fundraising (functional)
- $994,794
Balance sheet and other
- Total assets, start of year
- $33,301,539
- Total assets, end of year
- $37,268,172
- Total liabilities, end of year
- $2,084,358
- Net assets, end of year
- $35,183,814
- Land, buildings and equipment
- $2,060,114
- Net assets without donor restrictions
- $3,018,780
- Net assets with donor restrictions
- $32,165,034
- Gross receipts
- $16,102,971
- Employees
- 119
- Volunteers
- 622
- Year formed
- 1958
- State of legal domicile
- SD
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| BECKY DEWITZ | CEO Officer | 40 | $182,252 |
| ALISSA BRETSCH | DIRECTOR Trustee or director | 1 | $0 |
| MARGARET CARMODY | VICE-CHAIR Trustee or director | 1 | $0 |
| TRACY DAHL-WEBB | CHAIR Trustee or director | 1 | $0 |
| MOLLY DANIEL | DIRECTOR Trustee or director | 1 | $0 |
| MELISSA FOSSELL | DIRECTOR Trustee or director | 1 | $0 |
| ERIK GAIKOSKI | DIRECTOR Trustee or director | 1 | $0 |
| LISA GERNER | DIRECTOR Trustee or director | 1 | $0 |
| DARIN HAGE | DIRECTOR Trustee or director | 1 | $0 |
| RYAN HOWLETT | DIRECTOR Trustee or director | 1 | $0 |
| JEFF HUGUNIN | DIRECTOR Trustee or director | 1 | $0 |
| DON KEARNEY | DIRECTOR Trustee or director | 1 | $0 |
| ADAM KNIFFEN | DIRECTOR Trustee or director | 1 | $0 |
| JENN LACEY | DIRECTOR Trustee or director | 1 | $0 |
| JEANELLE LUST | DIRECTOR Trustee or director, Officer | 1 | $0 |
7 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| LAURA MITCHELL | DIRECTOR Trustee or director | 1 | $0 |
| GEORGE MOLLNER | TREASURER Trustee or director, Officer | 1 | $0 |
| DAVID O'HARA | DIRECTOR Trustee or director | 1 | $0 |
| MCKENZY RATERMAN | DIRECTOR Trustee or director | 1 | $0 |
| KATIE SCHMID | DIRECTOR Trustee or director | 1 | $0 |
| ANDREA SMITH | DIRECTOR Trustee or director, Officer | 1 | $0 |
| RYAN TYSDAL | DIRECTOR Trustee or director | 1 | $0 |
990 for the year ended December 31, 2024: 20 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| ALISSA BRETSCH | DIRECTOR Trustee or director | 1 | $0 |
| MARGARET CARMODY | DIRECTOR Trustee or director | 1 | $0 |
| TRACY DAHL-WEBB | DIRECTOR Trustee or director | 1 | $0 |
| MOLLY DANIEL | DIRECTOR Trustee or director | 1 | $0 |
| MELISSA FOSSELL | DIRECTOR Trustee or director | 1 | $0 |
| ERIK GAIKOSKI | DIRECTOR Trustee or director | 1 | $0 |
| LISA GERNER | DIRECTOR Trustee or director | 1 | $0 |
| DARIN HAGE | DIRECTOR Trustee or director | 1 | $0 |
| RYAN HOWLETT | DIRECTOR Trustee or director | 1 | $0 |
| JEFF HUGUNIN | DIRECTOR Trustee or director | 1 | $0 |
| JEANNIE IANNELLO | DIRECTOR Trustee or director | 1 | $0 |
| DON KEARNEY | DIRECTOR Trustee or director | 1 | $0 |
| DE KNUDSON | DIRECTOR Trustee or director | 1 | $0 |
| JEANELLE LUST | CHAIR Trustee or director, Officer | 1 | $0 |
| LAURA MITCHELL | DIRECTOR Trustee or director | 1 | $0 |
| GEORGE MOLLNER | TREASURER Trustee or director, Officer | 1 | $0 |
| DAVID O'HARA | DIRECTOR Trustee or director | 1 | $0 |
| MCKENZY RATERMAN | DIRECTOR Trustee or director | 1 | $0 |
| ANDREA SMITH | VICE CHAIR Trustee or director, Officer | 1 | $0 |
| RYAN TYSDAL | DIRECTOR Trustee or director | 1 | $0 |
990 for the year ended December 31, 2023: 21 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| ALISSA BRETSCH | DIRECTOR Trustee or director | 1 | $0 |
| MARGARET CARMODY | DIRECTOR Trustee or director | 1 | $0 |
| TRACY DAHL-WEBB | DIRECTOR Trustee or director | 1 | $0 |
| MOLLY DANIEL | DIRECTOR Trustee or director | 1 | $0 |
| TINA DAVIS | SECRETARY Trustee or director, Officer | 1 | $0 |
| MATT DITMANSON | DIRECTOR Trustee or director | 1 | $0 |
| MELISSA FOSSELL | DIRECTOR Trustee or director | 1 | $0 |
| DARIN HAGE | DIRECTOR Trustee or director | 1 | $0 |
| RYAN HOWLETT | DIRECTOR Trustee or director | 1 | $0 |
| JEFF HUGUNIN | DIRECTOR Trustee or director | 1 | $0 |
| JEANNIE IANNELLO | DIRECTOR Trustee or director | 1 | $0 |
| DON KEARNEY | DIRECTOR Trustee or director | 1 | $0 |
| JENNIFER KIRBY | DIRECTOR Trustee or director | 1 | $0 |
| DE KNUDSON | DIRECTOR Trustee or director | 1 | $0 |
| JEANELLE LUST | CHAIR Trustee or director, Officer | 1 | $0 |
| LAURA MITCHELL | DIRECTOR Trustee or director | 1 | $0 |
| GEORGE MOLLNER | TREASURER Trustee or director, Officer | 1 | $0 |
| DAVID O'HARA | DIRECTOR Trustee or director | 1 | $0 |
| MCKENZY RATERMAN | DIRECTOR Trustee or director | 1 | $0 |
| ANDREA SMITH | VICE CHAIR Trustee or director, Officer | 1 | $0 |
| RYAN TYSDAL | DIRECTOR Trustee or director | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 805 S KIWANIS AVE, SIOUX FALLS, SD 57104-3716
- Principal officer (990 for 2025)
- GEORGE MOLLNER, 805 S KIWANIS AVE, SIOUX FALLS, SD 57104
- Signed the 990
- GEORGE MOLLNER, TREASURER
- Phone
- (605) 367-7003
- Website
- WWW.GREATZOO.ORG
- Return prepared by
- ELO PROF LLC
Mission
CREATING CONNECTION AND INSPIRING CONSERVATION OF WILD SPECIES AND SPACES
Program accomplishments
- THE SIOUX FALLS ZOO & AQUARIUM (SFZA) IS THE GOVERNING AUTHORITY FOR 2 DESTINATIONS: GREAT PLAINS ZOO AND THE BUTTERFLY HOUSE & AQUARIUM. WELCOMING OVER 350,000 VISITORS ANNUALLY, WE STRIVE TO CONNECT PEOPLE TO OUR NATURAL WORLD THROUGH WILDLIFE UNDERSTANDING AND CONSERVATION ACTIONS TO SAVE WILD SPECIES AND SPACES. THROUGH OUR FORMAL AND INFORMAL EDUCATION PROGRAMS, WE REACH AN ADDITIONAL 70,000 INDIVIDUALS WITH OVER 850 ANIMALS IN OUR CARE, WE WORK TO PROVIDE THE HIGHEST LEVEL OF ANIMAL CARE FOR OPTIMAL ANIMAL WELLBEING; ALL WHILE OFFERING AN ENGAGING VISITOR EXPERIENCE EDUCATION AND INSPIRING OUR VISITORS TO CARE FOR ANIMALS AND THE NATURAL WORLD. THE SFZA MANAGES AND OPERATES THE ZOO THROUGH A FORMAL PARTNERSHIP WITH THE CITY OF SIOUX FALLS.Expenses $10,584,631 · revenue $4,026,691
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 46-6015015
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 1958
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Animal-related (D500)
- Assets (IRS master file)
- $37,268,172
- Income (IRS master file)
- $16,102,971
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $16,102,971 | $12,689,578 | $37,268,172 | XML |
| 990 | December 2024 | $12,777,302 | $11,466,292 | $33,301,539 | XML |
| 990 | December 2023 | $7,505,438 | $15,675,298 | $32,183,723 | XML |
| 990 | December 2022 | $29,508,398 | $5,985,243 | $35,425,267 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 46-6015015).
Questions about SIOUX FALLS ZOO & AQUARIUM
- What is the EIN of SIOUX FALLS ZOO & AQUARIUM?
- The employer identification number (EIN) of SIOUX FALLS ZOO & AQUARIUM is 46-6015015.
- Is SIOUX FALLS ZOO & AQUARIUM tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1958.
- Are donations to SIOUX FALLS ZOO & AQUARIUM tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does SIOUX FALLS ZOO & AQUARIUM file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of SIOUX FALLS ZOO & AQUARIUM due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did SIOUX FALLS ZOO & AQUARIUM last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of SIOUX FALLS ZOO & AQUARIUM?
- The 990 for the year ended December 31, 2025 names GEORGE MOLLNER.
- Who are the officers and directors of SIOUX FALLS ZOO & AQUARIUM?
- The 990 for the year ended December 31, 2025 lists 22 people; 1 received compensation from the organization, the highest $182,252 (BECKY DEWITZ, CEO).
- How much revenue does SIOUX FALLS ZOO & AQUARIUM have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $16,102,971, expenses of $12,689,578 and total assets of $37,268,172 at year end.
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- SIOUX FALLS HUMANE SOCIETY EIN 46-0239786 · last filed 990 for 2024
- HANSON FAMILY FOUNDATION FOR THE WELL-BEING OF GODS CREATURES EIN 93-3504978 · last filed 990-PF for 2024
- SIOUX EMPIRE PIT BULL RESCUE INC EIN 71-1051859 · last filed 990 for 2025
- ALMOST HOME CANINE RESCUE EIN 20-2753604 · last filed 990 for 2025
- DAKOTA DACHSHUND RESCUE INC EIN 20-8617462 · last filed 990 for 2025
- SIOUX EMPIRE TNR COALITION EIN 92-1136883 · last filed 990-EZ for 2025
- ALLCATSRESCUE EIN 80-0218548 · last filed 990-N for 2024
All nonprofits in SIOUX FALLS · South Dakota · Animal-related