94103

ZIP code 94103 covers the South of Market corridor and Mission Bay peninsula within San Francisco County — one of the city's most rapidly evolving postal areas. The code spans SoMa's converted loft buildings and new condominium towers, the UCSF Mission Bay research campus, and the emerging residential neighborhoods of Mission Bay and Showplace Square. Freeway access, Muni Metro lines, and proximity to downtown employment centers define the ZIP's regional position.

Geographic Position

94103 occupies the southeastern portion of San Francisco's urban core, extending from the Market Street corridor south toward Mission Bay and the waterfront. The Central Freeway and Interstate 80 border portions of the ZIP, while Third Street and Fourth Street serve as major north-south arterials connecting SoMa to the Bayview and Mission Bay developments.

Mission Creek and the bayshore form the ZIP's eastern boundary, where fill land supports the UCSF campus, Chase Center arena, and ongoing residential construction. To the west, SoMa's grid of wide streets and industrial-era buildings transitions into the Mission District along potentially overlapping neighborhood boundaries.

Neighborhood Character

Within 94103, SoMa presents a mix of converted warehouse lofts, modern condominium towers, and ground-floor restaurants and galleries along Folsom, Harrison, and Brannan Streets. Mission Bay features master-planned residential blocks, UCSF research buildings, and waterfront open space along the bay. Yerba Buena and Showplace Square areas connect to cultural institutions and design showrooms near the Moscone Convention Center.

Economy & Employment

Residents of 94103 draw income from technology, biotechnology, healthcare, hospitality, and creative industries concentrated in and around the ZIP. SoMa hosts corporate offices, startup workspaces, and venture capital firms along Townsend, Bryant, and Harrison Streets. UCSF Mission Bay employs researchers, clinicians, and administrative staff across its expanding campus.

Local commercial activity includes restaurants, cafes, fitness studios, and retail along Valencia Street's southern reach, Folsom Street corridors, and Mission Bay's emerging retail nodes. The Moscone Convention Center and Chase Center generate event-related employment and visitor traffic. Warehouses and showrooms in Showplace Square serve the design and furniture trade.

Market & Housing Context

According to U.S. Census Bureau data for ZIP Code Tabulation Area 94103, the area had a population of approximately 34,964 and 21,609 housing units as of the 2020 Census. American Community Survey estimates for the 2019–2023 period indicate that roughly 20 percent of occupied housing units are owner-occupied and 80 percent are renter-occupied.

The housing stock spans industrial-era loft conversions, purpose-built condominium towers from the 2000s and 2010s, and newer Mission Bay high-rise apartments. Older multi-unit buildings and single-room-occupancy structures remain in portions of SoMa. Mission Bay development has added thousands of new units in podium-and-tower configurations with ground-floor retail.

Living in 94103

Public parks and open space within and near the ZIP include Yerba Buena Gardens, South Park, Mission Creek Park, and the Mission Bay waterfront promenade. Oracle Park lies just outside the ZIP's southern boundary along the waterfront.

Public schools are operated by the San Francisco Unified School District. Campuses serving portions of the ZIP include Bessie Carmichael Elementary School and Downtown High School. School assignments depend on specific addresses and district enrollment policies.

Muni Metro T-Third Street and N-Judah lines serve the ZIP, with the Central Subway extension connecting Chinatown to SoMa and Mission Bay. Multiple bus routes traverse Market Street and SoMa corridors.

94103 Today

Geography & Environment

94103 spans flat to gently sloping terrain on filled bayshore and former industrial land. The Mediterranean climate brings cool summers moderated by bay breezes and mild, wet winters. Mission Bay's waterfront position exposes portions of the ZIP to bay winds and open sky views.

Waterfront open space along Mission Creek and the bay provides recreation and habitat restoration areas. Urban tree canopy is thinner than in older residential neighborhoods, though street trees and park plantings add greenery along newer developments.

Transportation & Connectivity

Interstate 80 and the Central Freeway provide freeway access at the ZIP's western and southern edges. Muni Metro lines run along Third Street and through the Market Street subway. The Central Subway connects SoMa and Mission Bay to Union Square and Chinatown.

Caltrain's Fourth and King Street Station lies within the ZIP, offering commuter rail to the Peninsula and South Bay. Multiple Muni bus routes serve SoMa corridors. Bay Area bike lanes and the Embarcadero promenade connect to regional cycling networks.

Looking Forward

San Francisco and UCSF continue Mission Bay buildout with additional residential towers, research facilities, and retail nodes. SoMa planning discussions address height limits, affordable housing requirements, and preservation of remaining industrial buildings. Sea-level-rise adaptation planning affects bayshore portions of the ZIP.

Central Subway operations and potential rail yard redevelopment projects shape transportation and land-use discussions. Residents participate in planning through community meetings and district supervisor offices.

The ZIP's Character

94103 embodies San Francisco's transformation from industrial waterfront to innovation economy — warehouse lofts beside glass towers, UCSF research labs beside condominium podiums, and Muni Metro lines linking a district that continues to add density along the bay.

“"94103 stretches from SoMa's loft-lined blocks to Mission Bay's waterfront towers — a ZIP where century-old warehouses, research campuses, and transit lines define San Francisco's southeastern urban frontier."

From converted industrial lofts to master-planned bayshore blocks, the ZIP offers a geographically varied slice of central San Francisco within a single postal boundary. Buyers, sellers, and investors evaluating 94103 benefit from understanding its submarket differences, housing-era mix, and position within the broader San Francisco County real estate landscape.