QrefHub · TrialSchool lookup: CUSD + FUHSD only · preliminary.

Community map

Voter resources
Map options

Includes excluded precinct 9266; separate from the TA4 outline. Off by default. Location verification warnings remain active.

Applies to CUSD and high schools. Turn off to keep your current view. Saved in this browser.

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Zoom to cityCupertino

Choose a city

Moves the map and shows the chosen city’s border without its fill.

Precinct areaCupertino

City / postal-city area · voter share

Choose a postal-city dataset or All cities. Percentages are shares of the listed voters, not population shares.

City boundariesOff

City boundaries · in or touching TA4

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Zoom to city starts with borders only. Use Show city fills to change shading for visible cities. Location lookup still covers every county city.

Boundary source note

City limits: Santa Clara County Planning / LAFCO, retrieved October 21, 2026. These are municipal limits, not postal-city names. Only cities in or touching TA4 are offered as overlays; lookup covers all 15 County cities. City hall points: County GIS Points of Interest, retrieved October 22, 2026.

County city-limit source ↗ · City hall source ↗

High schoolsFUHSDOff
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Each area includes its school-location marker. Auto-zoom can be changed in Map options.

Boundary source note

Attendance polygons: SchoolFinder linked by Fremont Union High School District, retrieved October 21, 2026; source page updated April 27, 2026. Coverage is the five FUHSD high schools, including portions outside TA4. Campus points: City of Cupertino GIS, retrieved October 22, 2026. Campus markers do not determine assignment. Confirm an address and school year with FUHSD before enrollment.

FUHSD boundary information ↗ · Official SchoolFinder ↗

Elementary & middleCUSDOff
Cupertino Union School District
Attendance areas 14 elementary · 5 middle
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Faria, McAuliffe, Muir/CLIP and Murdock-Portal have no neighborhood polygon in the official locator.

School locations 23 markers

A school marker is shown automatically with its attendance area. Choose additional markers below.

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Borders follow enable order: the most recently switched on appears on top. School-area auto-zoom can be changed in Map options.

CUSD’s currently linked locator is used for the district outline and preliminary attendance areas. Final assignments are confirmed by CUSD.

Boundary source note

The County/CDE polygon excludes a Sunnyvale School District block. CUSD’s own locator includes that same block in West Valley Elementary / Cupertino Middle. The map follows the CUSD locator outline and flags this source discrepancy in clicked-location details.

Official CUSD school locator ↗

Regional groups Off

Working groups for campaign organization, not official County districts. These groups are publicly accessible; edits stay in your browser.

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Precinct stats & grouping

Explore the boundary

Click a precinct

Zoom in to compare its edges with streets, highways, rail lines and other features on the map.

Switch off Fills and Borders for a clear view underneath.

Your grouping

Original proposal

Changes save in this browser.

Download the JSON file to back up your edits, use them on another device, or supply them for future maps and voter lists.

Precinct boundary
Foothill-De Anza TA4 boundary · County precinct lists
City limits · color matches city fill and name
CUSD district boundary

CUSD markers: blue school icon = elementary / K–8; purple = middle. Attendance polygons come from the official CUSD locator; final assignments are confirmed by CUSD. Official CUSD school locator ↗

Most recently enabled borders appear on top. Click anywhere for municipal city limits and TA4 membership. Postal-city precinct groups may extend beyond city limits.

Optional amber source-verification outline: excluded precinct 9266 requires County verification because the original ROV extract and County district list disagree. It is excluded from the corrected working voter list.

Address results within 500 feet of TA4 are sent to verification. Map clicks show geometric membership; precinct 9266 remains flagged even when verification outlines are hidden.

Download TA4 boundary · Boundary source audit ↗ · Verify with the County ↗

Precinct numbers appear when they fit inside their boundary.

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Open this location in Google Maps ↗
Use the overlay in Google My Maps
  1. Download the overlay with your current groups.
  2. Open Google My Maps and create a map.
  3. Choose Add layer → Import and select the KML file to see precinct boundaries on Google’s map.

Current grouping

Regional group totals

Click a group to see its precincts on the map. Totals update when you move a precinct.

Selected city TA4 baseline · all parties
Regional groupPrecinctsVotersAddressesDemRepOther

Addresses are unique household addresses. Other includes every party registration outside Dem and Rep. Counts cover supplied records for the selected postal city, not all voters in a whole cross-city precinct.