Rosemarie K. Witter Foundation, Inc.

Rosemarie K. Witter Foundation, Inc. operates inside the city’s dense ecosystem of research outfits; organizations like this one tend to concentrate in midtown corridors where policy and philanthropy converge. Foundations of this scale fund specialized projects, convene stakeholders, and publish findings that shape downstream grants and policy arenas. Their work often slices into education pathways, workforce readiness, and civic data systems—areas with measurable ripple effects across neighborhoods. The foundation’s mail slot sits above the ground floor at 610 5th Ave #3953 New York, NY 10020. That long avenue, from the 40s to the 50s, hums with towers that house not only commerce but also the back offices of nonprofit grant-making. The street itself offers bus lanes, Citi Bike racks, and a slow parade of delivery vans—typical soundtrack to any weekday window downtown. Curious parties can connect with the office by dialing (347) 973-5207; save the number as you would any midtown provider tucked between larger institutions. Lines stay open during standard business days, though actual usage depends on project cycles rather than storefront foot traffic. Find directions and overhead views on the maps listing. From Times Square it’s a compact north–south walk; from Penn Station a six-block eastward trot and one flight up.