ZIP Code Guide
95139
East Foothills Interface
San Jose's eastern foothill ZIP — a low-density postal area at the wildland-urban interface where Silver Creek Valley residences meet oak woodland and the rural margins of the Diablo Range
- East San Jose foothills
- Silver Creek Valley
- Evergreen fringe
- rural interface
ZIP code 95139 covers the eastern foothill interface of San Jose within Santa Clara County — the city's least populous residential ZIP and a postal area defined by low-density development, large parcels, and proximity to oak woodland and the Diablo Range foothills. The code represents San Jose's eastern development boundary, where suburban and semi-rural residential properties meet open space, grazing land, and the wildland-urban interface that characterizes the East Foothills submarket.
Geographic Position
95139 occupies the southeastern foothill margin of incorporated San Jose, rising from the Evergreen Valley floor toward the Diablo Range. The ZIP's boundaries encompass Silver Creek Valley and portions of the East San Jose foothills, with Capitol Expressway and Yerba Buena Road providing primary surface connections to the Evergreen and South San Jose areas to the west and north.
The terrain within 95139 varies significantly — from gentler valley-adjacent slopes to steeper foothill parcels with panoramic views across the Santa Clara Valley. Open space, oak woodland, and grazing land border the ZIP on multiple sides, limiting further outward development and reinforcing the area's low-density character.
Neighborhood Character
Ranching, grazing, and orchard agriculture define the East San Jose foothills; Silver Creek Valley develops slowly due to terrain and distance from early San Jose commercial centers.
Selective hillside and valley development adds custom homes and small residential enclaves on larger parcels; the Silver Creek Valley community emerges as a distinct foothill neighborhood.
San Jose voters approve urban growth boundary and hillside development policies that constrain future building in the East Foothills.
Limited new construction proceeds on remaining buildable parcels; established properties undergo remodeling while open space preservation and wildfire safety planning intensify at the wildland- urban interface.
Within 95139, Silver Creek Valley forms the ZIP's primary residential community — a collection of custom and semi-custom homes on larger lots with winding streets and significant tree cover. Foothill areas feature even lower density with greater separation between properties and more dramatic topographic variation.
Economy & Employment
Residents of 95139 draw income from employment across Silicon Valley and the greater South Bay. Technology campuses in North San Jose, East San Jose commercial corridors, and downtown San Jose are reachable via Capitol Expressway and Interstate 680. Commercial activity within the ZIP itself is minimal, with residents relying on Evergreen, South San Jose, and Milpitas commercial nodes for daily retail and services.
The ZIP's low-density character and foothill location produce commuting patterns typical of East San Jose hillside communities — residents traveling west and north toward employment centers via Capitol Expressway and the Interstate 680 corridor. Home-based businesses and professional services operate among the residential properties scattered across the foothill landscape.
Market & Housing Context
According to U.S. Census Bureau data for ZIP Code Tabulation Area 95139, the area had a population of approximately 7,035 and 2,195 housing units as of the 2020 Census. American Community Survey estimates for the 2019–2023 period indicate that roughly 76 percent of occupied housing units are owner-occupied and 24 percent are renter-occupied.
Housing types consist primarily of custom and semi-custom single-family homes on larger parcels, with significant variation in size, age, and architectural style. The ZIP's low unit count and small population reflect both hillside development policies and the larger lot sizes typical of foothill areas. Few apartment or townhome developments exist within the postal boundary. Owner- occupied housing constitutes a substantially larger share of the tenure mix than in valley-floor San Jose ZIP codes.
Living in 95139
Public parks and open space within and near the ZIP include Joseph D. Grant County Park to the east, Ed Levin County Park to the north, and neighborhood parks in adjacent Evergreen areas. Silver Creek Valley's natural setting provides trail access and outdoor recreation within the residential community itself. Regional shopping along Capitol Expressway and in Evergreen Town Center serves daily needs within a moderate drive.
Public schools are operated by the Evergreen School District and East Side Union High School District depending on address within the ZIP. Campuses include Silver Creek High School, Chaboya Middle School, and elementary schools serving Evergreen and Silver Creek Valley areas. School assignments vary by specific address and district boundary lines.
Valley Transportation Authority bus routes serve Capitol Expressway near the ZIP's western margin. Most residents rely on personal vehicles for daily commuting given the foothill terrain and limited transit coverage.
95139 Today
7,035
Population (2020 Census ZCTA)
2,195
Housing Units (2020 Census)
~12 sq mi
Approximate ZCTA Land Area
1970s–90s
Dominant Housing Era
Government and Civic Life
95139 falls entirely within the City of San Jose municipal boundaries and Santa Clara County. City services — including planning, public works, fire, and police — are administered from San Jose City Hall. Silver Creek Valley homeowners associations and East Foothills community groups organize local events, wildfire safety advocacy, and hillside preservation input for city planning processes.
Culture and Community
The ZIP's civic life reflects the East Foothills' low-density residential character — community events within Silver Creek Valley, equestrian and hiking activities on adjacent open-space lands, and connections to Evergreen community programming. The rural-urban interface setting shapes a civic identity distinct from the valley-floor neighborhoods of central and West San Jose.
Geography & Environment
95139 spans terrain from valley-adjacent slopes to oak-studded Diablo Range foothills, with the Mediterranean climate of warm, dry summers and mild, wet winters shaping native chaparral and oak woodland ecosystems. Silver Creek and associated drainages flow through portions of the ZIP, contributing to the area's natural drainage patterns.
Joseph D. Grant County Park and Ed Levin County Park preserve extensive open space at the ZIP's eastern and northern margins. Wildfire awareness, defensible space management, and evacuation route planning are practical considerations for residents given the wildland-urban interface character of the entire postal area.
Transportation & Connectivity
Capitol Expressway and Yerba Buena Road provide primary surface connections to Evergreen, South San Jose, and Milpitas commercial and employment centers. Interstate 680 lies within a moderate drive to the north, connecting to the Fremont and East Bay corridor. Interstate 280 and U.S. Route 101 are reachable via Capitol Expressway connections through central San Jose.
Norman Y. Mineta San Jose International Airport is reachable via freeway within approximately 25 to 35 minutes depending on traffic. Caltrain service is available at stations in central San Jose and Milpitas, accessible by car.
Looking Forward
San Jose's hillside development policies and urban growth boundary constrain future building in 95139, limiting the ZIP to infill on remaining buildable parcels and remodeling of existing homes. Wildfire safety planning, vegetation management programs, and evacuation route improvements proceed through city, county, and fire protection district agencies serving the wildland-urban interface.
Open-space acquisitions and conservation easements continue to expand public and protected lands adjacent to the ZIP's margins. Residents participate in land-use and safety decisions through city council meetings, planning commission hearings, and East Foothills community advocacy.
The ZIP's Character
95139 embodies San Jose's eastern foothill boundary — where Silver Creek Valley residences, oak woodland, and the Diablo Range backdrop define a low-density postal area unlike any other in the city. Large parcels, high owner-occupancy, and wildland-urban interface conditions distinguish this ZIP from the valley-floor tracts that dominate San Jose's housing market.
"95139 is where San Jose meets the foothills — a postal code of large lots, oak woodland, and Silver Creek Valley streets that end where the Diablo Range begins."
From the winding roads of Silver Creek Valley to the open ridges visible from foothill properties, the ZIP offers a semi-rural slice of eastern San Jose within a single postal boundary. Buyers, sellers, and investors evaluating 95139 benefit from understanding its low-density character, wildland- urban interface conditions, and position at the eastern edge of Santa Clara County's largest city.