City
Sunnyvale
Sunnyvale is a city record. City or town offices may handle local rules inside their limits, while county offices still handle records, taxes, courts, and many services.
Starting point
Confirm the address is inside local limits first.
If the address is inside Sunnyvale, city or town offices may handle local permits, code, and services. If it is outside limits, county routing may be the better first stop.
A mailing city is not always the same as city government jurisdiction.
2025 population
156,577
Land area
22.06 sq mi
Water area
0.718 sq mi
Directory notes
Local layers to keep on the same page.
Confirm city or town limits.
A mailing address can use a nearby place name. If the address is outside limits, county offices may handle permits, code, and land-use routes.
County still matters.
Santa Clara County can still matter for assessor, tax collector, recorder, court, public health, social service, and election records.
Some layers are separate.
Water, sewer, fire, school, utilities, coast, earthquake maps, wildfire zones, parks, and trails may point outside city hall.
County layer
County shown for Sunnyvale
Practical notes
Office, map, permit, and paperwork notes for Sunnyvale
Place note · Home and property · Reviewed July 4, 2026
Sunnyvale emergency info works best with a few channels
Sunnyvale points residents to AlertSCC, SunnyvaleDPS updates, and 1680 AM radio as local ways to stay informed during emergencies and disaster conditions.
Place note · Home and property · Reviewed July 4, 2026
Sunnyvale permit work starts with e-OneStop or the Permit Center
Sunnyvale's Permit Center connects online permit accounts, building permit submittals, OTC plan-check appointments, in-person kiosks, and larger project requirements.
Place note · Home and property · Reviewed July 4, 2026
Sunnyvale utility billing splits city water from garbage service
Sunnyvale provides water and wastewater directly, while garbage and recycling are handled by a contracted provider at city-approved rates.
Place note · Rules and licenses · Reviewed July 3, 2026
MySunnyvale is the new service request door
Sunnyvale shifted from Access Sunnyvale to MySunnyvale, a web and mobile service request system for reporting issues, requesting services, and sharing feedback with the city.
Place note · Home and property · Reviewed July 3, 2026
Sunnyvale tree work can start with a simple measurement
Sunnyvale protects some private trees, and removal can require checking trunk measurements, permit rules, street-tree rules, and the city tree pages first.
County layer · History and culture · Reviewed July 7, 2026
History Park keeps old San Jose in walking distance
History Park in Kelley Park gathers historic buildings, small museums, streetscapes, and everyday objects that help San Jose feel older than Silicon Valley.
Almanac notes
Stories and local context near Sunnyvale
Place note · History and culture
Murphy Avenue shows Sunnyvale learning to linger downtown
Historic Murphy Avenue is being reshaped as a pedestrian mall after a temporary 2020 outdoor-dining closure showed how much people liked a slower downtown street.
Place note · History and culture
Sunnyvale's fruit-cocktail tower keeps the cannery years visible
The Libby Water Tower in Sunnyvale keeps a playful fruit-cocktail label in view while pointing back to the city's cannery jobs, orchards, and office-park change.
Place note · History and culture
Sunnyvale's Heritage Park keeps the orchard-to-tech story visible
Sunnyvale's Heritage Park Museum and Community Center campus help connect old fruit orchards, local families, and the city's high-tech turn.
Place note · History and culture
Sunnyvale's heritage orchard keeps the tech city tied to apricots
Orchard Heritage Park and the Heritage Park Museum help Sunnyvale show its Santa Clara Valley orchard roots beside its newer technology identity.
Place note · Outdoors
Baylands Park gives Sunnyvale a wetland-and-picnic edge
Baylands Park in Sunnyvale has more than 70 acres of developed parkland, 105 acres of protected seasonal wetlands, picnic areas, trails, wildlife habitat, and San Francisco Bay Trail access.
County layer · History and culture
The Triton Museum gives Santa Clara a local art room
Santa Clara's Triton Museum of Art focuses on accessible exhibitions, education, community programs, and California artists near the city's civic center.
County layer · Outdoors
McClellan Ranch gives Cupertino a quiet creekside history
McClellan Ranch Preserve is an 18-acre former horse ranch in Cupertino with a nature trail, creekside habitat, an environmental education center, and blacksmith shop history.
County layer · History and culture
The Jose Higuera Adobe gives Milpitas a foothill history stop
Jose Higuera Adobe Park connects Milpitas to Rancho Los Tularcitos, Calera Creek, old crops, cactus hedges, and a neighborhood park at the foothill edge.