Blog > The Most Expensive ZIP Codes in Silicon Valley (2026)
Which Silicon Valley ZIP codes cost the most? We ranked the 69 ZIP codes in Santa Clara and San Mateo counties with at least 20 house sales in the year to October 27, 2026 by median sale price. The top one, 94027 in Atherton, had a median of $10.66M; the median for all 10,794 house sales was $2.02M.
The short answer
- The five most expensive: 94027 Atherton ($10.66M), 94022 Los Altos and Los Altos Hills (north Los Altos) ($5.35M), 94024 Los Altos and Los Altos Hills (south Los Altos) ($4.75M), 94301 Palo Alto (central and north) ($4.59M) and 95070 Saratoga ($4.3M).
- 15 ZIP codes had a median house price of $3 million or more, and 2 of $5 million or more.
- Biggest price gain among the top 25, against the year before: 94027 Atherton (+28%).
Next steps
- Luxury Market Report: the top of the market, live.
- The most expensive streets from San Francisco to San Jose.
- What’s my home worth? A starting estimate, then a real one from a Property Nerd.
The top 25 ZIP codes by median house price
Houses (MLS property type “single family home”) sold in the year to October 27, 2026; “change” is against the 12 months before, where that year also had 20 sales. Each ZIP links to its page with live listings.
| # | ZIP | Area | County | Median house price | Change | Per sq ft | Over asking | Sales |
|---|---|---|---|---|---|---|---|---|
| 1 | 94027 | Atherton | San Mateo | $10.66M | +28% | $2,192 | 47% | 76 |
| 2 | 94022 | Los Altos and Los Altos Hills (north Los Altos) | Santa Clara | $5.35M | −3% | $1,872 | 61% | 182 |
| 3 | 94024 | Los Altos and Los Altos Hills (south Los Altos) | Santa Clara | $4.75M | +7% | $1,857 | 64% | 188 |
| 4 | 94301 | Palo Alto (central and north) | Santa Clara | $4.59M | −5% | $2,264 | 62% | 130 |
| 5 | 95070 | Saratoga | Santa Clara | $4.3M | +2% | $1,579 | 59% | 229 |
| 6 | 94010 | Burlingame and Hillsborough | San Mateo | $4.2M | +11% | $1,562 | 59% | 318 |
| 7 | 94028 | Portola Valley | San Mateo | $4.03M | −9% | $1,424 | 35% | 71 |
| 8 | 95030 | Los Gatos and Monte Sereno | Santa Clara | $4M | +10% | $1,458 | 42% | 124 |
| 9 | 94040 | Mountain View (south) | Santa Clara | $3.6M | +2% | $1,818 | 70% | 118 |
| 10 | 94025 | Menlo Park | San Mateo | $3.6M | +9% | $1,734 | 59% | 276 |
| 11 | 94306 | Palo Alto (south) | Santa Clara | $3.52M | +1% | $2,082 | 73% | 157 |
| 12 | 95014 | Cupertino | Santa Clara | $3.3M | −4% | $1,661 | 71% | 216 |
| 13 | 94062 | Redwood City west and Woodside | San Mateo | $3.2M | +17% | $1,320 | 51% | 236 |
| 14 | 94303 | Palo Alto and East Palo Alto | Santa Clara | $3M | −4% | $1,706 | 62% | 181 |
| 15 | 94087 | Sunnyvale (south) | Santa Clara | $3M | ±0% | $1,681 | 78% | 259 |
| 16 | 95032 | Los Gatos | Santa Clara | $2.95M | −6% | $1,345 | 53% | 169 |
| 17 | 94402 | San Mateo, west and south | San Mateo | $2.75M | +6% | $1,419 | 76% | 200 |
| 18 | 94070 | San Carlos | San Mateo | $2.74M | +5% | $1,439 | 64% | 248 |
| 19 | 95129 | West San Jose (near Cupertino) | Santa Clara | $2.7M | −8% | $1,595 | 74% | 150 |
| 20 | 94041 | Mountain View (central) | Santa Clara | $2.6M | +11% | $1,482 | 69% | 35 |
| 21 | 94086 | Sunnyvale (central) | Santa Clara | $2.56M | +1% | $1,510 | 76% | 122 |
| 22 | 94065 | Redwood Shores | San Mateo | $2.55M | −1% | $1,286 | 70% | 33 |
| 23 | 94043 | Mountain View (north) | Santa Clara | $2.4M | +7% | $1,529 | 79% | 70 |
| 24 | 94002 | Belmont | San Mateo | $2.38M | −2% | $1,287 | 67% | 169 |
| 25 | 94030 | Millbrae | San Mateo | $2.33M | +8% | $1,228 | 75% | 107 |
The most expensive ZIP codes for condos and townhomes
ZIP codes with at least 15 condo and townhouse sales in the year, top 10.
| # | ZIP | Area | Median condo or townhome | Change | Per sq ft | Sales |
|---|---|---|---|---|---|---|
| 1 | 94025 | Menlo Park | $1.77M | +21% | $987 | 83 |
| 2 | 94022 | Los Altos and Los Altos Hills (north Los Altos) | $1.75M | −5% | $1,250 | 53 |
| 3 | 94301 | Palo Alto (central and north) | $1.68M | −1% | $1,249 | 41 |
| 4 | 94041 | Mountain View (central) | $1.63M | +23% | $1,025 | 17 |
| 5 | 95032 | Los Gatos | $1.45M | ±0% | $898 | 85 |
| 6 | 94043 | Mountain View (north) | $1.45M | +1% | $996 | 198 |
| 7 | 94306 | Palo Alto (south) | $1.44M | +9% | $1,028 | 73 |
| 8 | 95070 | Saratoga | $1.43M | −25% | $891 | 45 |
| 9 | 94089 | Sunnyvale (north and bayfront) | $1.4M | −4% | $826 | 37 |
| 10 | 94086 | Sunnyvale (central) | $1.34M | −5% | $898 | 150 |
Reading it right
- A median moves with the mix. A ZIP with a few big estates selling in one year can jump; check the sales count.
- ZIP codes cross city lines. 94025 covers Menlo Park and parts of Atherton; 95070 is Saratoga; 94022 and 94024 split Los Altos and Los Altos Hills.
- Price per square foot is often the fairer comparison between ZIPs with different house sizes.
How we counted
Closed sales of houses between October 28, 2024 and October 27, 2026 in 31 cities of Santa Clara and San Mateo counties, reported to the MLS and read through the IDX feeds that power our home search, with repeat records from different feeds removed (normalized address plus sale date). “Change” compares the median of the last 12 months (to October 27, 2026) with the 12 months before. ZIP codes are the ones on the listings; a ZIP that crosses a city line is listed under the city with most of its sales. Price per square foot uses sales with 400 sq ft or more. Past sales aren’t a forecast or the value of any one home.
Go deeper
The most expensive cities, the most affordable ZIP codes in Silicon Valley, the Santa Clara County and San Mateo County housing markets by city, the City Scorecard and where $5 million homes sell.
Buying or selling in one of these ZIP codes?
A Property Nerd will pull the recent sales closest to the home you’re weighing, on the same streets, and show you what buyers paid. Call (408) 373-1660 or (650) 383-8606, or book a strategy call. Commissions are negotiable, and we offer bundled services, so ask us what’s included.