Port Washington, NY

LANDMARK ON MAIN STREET INC

EIN 11-2444833

Arts, Culture & Heritage Community Arts & Public Programs

Mission

To strengthen the spirit of community by presenting and promoting cultural, educational, recreational, social and civic activities that benefit the people of Port Washington and neighboring communities.

IRS-recognized 501(c)(3) public charity Contributions are tax-deductible

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About LANDMARK ON MAIN STREET INC

Landmark on Main Street, Inc. is a not-for-profit community center and performing arts venue located in the historic Main Street School building in Port Washington, NY. The organization operates the 425-seat Jeanne Rimsky Theater and manages a multi-generational community center that houses additional nonprofit partners (including local early-childhood and teen programs) and offers performing arts, educational, civic and recreational programming. In recent years Landmark has returned to a full in-person season of events and community programming and invested in facility improvements to support year-round performances and rentals. Public tax filings show the organization operating at roughly $1.5M–$1.6M in annual revenue in the early 2020s with program services representing the majority of revenue, reflecting a program-focused operating model and reliance on community contributions and grants.

Notable achievements

Major facility upgrades (Summer 2024)

Completed approximately $750,000 in capital improvements in 2024, including replacement of the Jeanne Rimsky Theater HVAC system and renovation of theater bathrooms to restore full-season operations and improve audience/performer comfort and accessibility.

Sustained performing-arts programming

Maintains a full season of concerts, dance, family and speaker events in the Jeanne Rimsky Theater and expanded in-person offerings after the pandemic, presenting both regional presenters and community-focused events for Port Washington and surrounding communities.

Multi-tenant community hub

Houses and partners with multiple local nonprofits (including early-childhood and teen services) to provide intergenerational programming and community services from the Landmark facility, increasing program reach and shared-resource efficiency.

At a glance

Total assets: $2.4M
Annual revenue: $1.6M
Tax status: 501(c)(3)Public charity
EIN: 11-2444833
Location: Port Washington, NY
Website: www.landmarkonmainstreet.org
On Mahalo since: May 2026

Financial figures from the IRS Business Master File, the IRS’s registry of tax-exempt organizations.

Recognition

Operates in a historically significant building (the former Main Street School), recognized locally for historic preservation and adaptive reuse as a community cultural center.

Featured in local press and regional arts listings for facility improvements and program offerings, demonstrating community support and visibility for its cultural and service mission.

Registered as a tax-exempt 501(c)(3) nonprofit (EIN 11-2444833) with multiple years of Form 990 filings showing ongoing program activity and community-contributed support.

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