The Flatiron/23rd Street Partnership Business Improvement District (BID) is a not-for-profit organization formed in 2006 by property owners, businesses, and others with a stake in the community. The Partnership joins the ranks of 64 BIDs throughout New York City that focus on community improvements and economic development at the neighborhood level.

The BID district is an irregularly shaped area of some 38 square blocks, from 21st to 28th Streets, and from parts of Sixth Avenue up to, but not including, Third Avenue. It serves more than 20 million square feet of commercial space and over 4,500 businesses.

The district itself is a mix of culture and commerce that blends some of the city's most historic attractions, such as the Flatiron Building and Madison Square Park, with more contemporary features such as new residential buildings and diverse businesses.

Since its inception, the Partnership has been engaged in a wide range of programs and services designed to enhance the neighborhood's quality of life. Such initiatives began with the formation of a uniformed Clean Team and a Public Safety Team. The BID has also produced a vigorous marketing effort, including a website, a monthly newsletter, a Facebook page, periodic e-mail blasts, a Discover Flatiron map, and shopping guides. Under the umbrella of its Intersections initiative, which highlights information, ideas and the Flatiron community, the BID provides diverse programming that includes a Speaker Series and business-related panel discussions on a variety of vital issues. Its free weekly walking tours have drawn people from around the world. Its annual meeting and annual cocktail party are open to all. The BID has also instituted a Homeless Outreach program and is a founding member of the East Side Alliance.

The Partnership's branded banners, trash receptacles and ash urns have provided sponsorship opportunities for local businesses; so has the mall beautification campaign along Park Avenue South. A variety of BID projects have added to the ambience of the area. All are part of a Master Plan for Streetscape and Beautification and range from custom tree-pit guards to maintenance of the public plazas near the Flatiron Building.

With an annual budget of $1.6 million, funded through a special assessment collected from commercial property owners throughout the district, the Partnership is one of New York City's largest BIDs.