Nonprofit transparency, in plain sight
Zilker 351 is an independent 501(c)(3) nonprofit. Here is our verified organizational information, IRS status, and the transparency materials that keep us accountable to the public we serve.
A registered 501(c)(3), accountable to the public
Zilker 351 is an independent nonprofit based in Austin, TX. The details below are the organization's verified facts — useful for donors, grantmakers, journalists, and anyone confirming our standing.
- Organization
- Zilker 351
- Type
- 501(c)(3) nonprofit
- IRS EIN
- 88-2597231
- Location
- Austin, TX
- info@zilker351.org
- Mission
- Zilker 351 works to honor, preserve and enhance the natural, cultural, and recreational treasures of 351-acre Zilker Metropolitan Park for all.
Verified tax-exempt status
The IRS Letter of Determination confirms Zilker 351's 501(c)(3) tax-exempt status. You can also verify our standing directly through the IRS Tax Exempt Organization Search using our EIN, 88-2597231.
How to verify us
- 1Visit the IRS Tax Exempt Organization Search at apps.irs.gov.
- 2Search by our EIN, 88-2597231, or by the name Zilker 351.
- 3Confirm our 501(c)(3) public-charity status and good standing.
Reports & financial materials
As Zilker 351 grows, we're committed to sharing how funds are raised and put to work. Current documents are available for download below, with more published here over time.
Annual reports
Yearly summaries of Zilker 351's stewardship work, partnerships, and impact across the park.
Related pages
Nonprofit questions, answered
The questions donors, grantmakers, and supporters ask us most about our finances and status.
Yes. Zilker 351 is a registered 501(c)(3) nonprofit based in Austin, TX. Donations to Zilker 351 are tax-deductible to the extent allowed by law.
Your gift is tax-deductible — and it works
Every contribution to Zilker 351 funds tree planting, native restoration, water-quality care, and a more welcoming park for every Austinite.