Districts in Contra Costa County13 districts, sorted by rating
| District | City | Rating | Zip Codes |
|---|---|---|---|
| San Ramon Valley Unified School District | San Ramon Valley | 10/10 Excellent · 96th pct | 7 |
| Acalanes Union High School District | Acalanes Union | 10/10 Excellent · 95th pct | 6 |
| Orinda Union School District / Acalanes Union High | Orinda | 10/10 Excellent · 95th pct | 1 |
| Martinez Unified School District | Martinez | 8/10 Good · 74th pct | 1 |
| Knightsen Elementary School District | Knightsen | 7/10 Good · 65th pct | 1 |
| Byron Union Elementary School District | Byron Union | 7/10 Good · 64th pct | 1 |
| Liberty Union High School District | Liberty Union | 7/10 Good · 63rd pct | 4 |
| Mount Diablo Unified School District | Mount Diablo | 7/10 Good · 60th pct | 7 |
| West Contra Costa Unified School District | West Contra Costa | 3/10 Below Average · 29th pct | 9 |
| John Swett Unified School District | John Swett | 2/10 Poor · 17th pct | 3 |
| Pittsburg Unified School District | Pittsburg | 2/10 Poor · 15th pct | 1 |
| Antioch Unified School District | Antioch | 2/10 Poor · 11th pct | 2 |
| Walnut Creek School District / Mt. Diablo Unified | Walnut Creek | Not rated | 1 |
Zip Codes in Contra Costa County
School Districts in Contra Costa County, California
Contra Costa County has 13 public school districts covering 44 zip codes. The top-rated district in Contra Costa County is San Ramon Valley Unified School District (10/10). Ratings are based on the share of students proficient in reading and math on state assessments (California CAASPP 2023–24 for most districts), ranked against all districts in California. Directory details come from NCES CCD 2024–25.
Enter your zip code on any page to confirm your exact district assignment — district boundaries are address-specific and may not follow county or city lines.