Winnetka's housing stock is dominated by single-family homes, much of it post-war ranch and tract construction developed as the San Fernando Valley suburbanized after World War II. Owner-occupied homes make up a majority of the housing, with apartments and smaller multi-family buildings clustered along the main corridors adding rental options. Lots are typically compact by Valley standards, and the neighborhood retains a consistent, low- to mid-rise residential scale. The mix of established ranch houses and occasional newer infill gives buyers a range of entry points in the western Valley.

Winnetka is a clearly defined grid of residential blocks bordered by Chatsworth to the north, Northridge to the northeast, Reseda to the east, Woodland Hills to the south, and Canoga Park to the west. The southern edge of the neighborhood sits close to Warner Center, the Woodland Hills commercial and employment district, while Pierce College anchors the area near the Winnetka Avenue and Victory Boulevard corner. Within Winnetka, the area around the Winnetka Recreation Center and along Sherman Way functions as an informal community core.

Winnetka offers a distinctly suburban Valley lifestyle within Los Angeles. Commercial corridors along Sherman Way, Winnetka Avenue and Roscoe Boulevard carry a mix of restaurants, coffee shops, markets and neighborhood services, while residential streets remain quiet and tree-lined. The community is diverse and largely family-oriented, with a strong share of homeowners. Pierce College, just across the southern border in Woodland Hills, brings students, performances and community events nearby, and the neighborhood's parks and recreation center give residents gathering places close to home.

Winnetka is served by the Los Angeles Unified School District, which operates neighborhood elementary and secondary campuses including Winnetka Avenue Elementary School, with additional schools assigned across the surrounding Valley. The community also hosts private institutions such as St. Martin-in-the-Fields Parish School and the AGBU Manoogian-Demirdjian School. Pierce College, a Los Angeles Community College District campus just across the border in Woodland Hills, offers two-year programs and continuing education that anchor the area's higher-education options.

The Metro G Line — the former Orange Line busway — runs through Winnetka with stations at Pierce College and Sherman Way, providing fast east-west transit across the San Fernando Valley and connections to the broader Metro system. The Ventura Freeway (U.S. Route 101) passes just south of the neighborhood, linking Winnetka to the Westside and downtown Los Angeles, while major arterials including Winnetka Avenue, Topanga Canyon Boulevard, Roscoe Boulevard and Sherman Way handle local travel. Commuters also reach the wider Valley and nearby freeways through these surface routes.

Winnetka's central recreational hub is the Winnetka Recreation Center at Roscoe Boulevard and Winnetka Avenue, a City of Los Angeles facility with sports fields, an auditorium and programs for all ages. Quimby Park, a smaller neighborhood green space, offers additional outdoor room for families. Nearby, Warner Center Park in Woodland Hills hosts concerts and community gatherings, and Pierce College's open campus provides walking paths and open space. The Santa Monica Mountains, Topanga State Park and the wider Valley trail system are a short drive away.