Below are the Top 25% of competitors in the California State MATHCOUNTS Competition for 2021.
| Student Name | School Name | State Rank |
| David Zhang | Windemere Ranch Middle School (San Ramon, CA) | 1 |
| Angela Liu | The Harker School (San Jose, CA) | 2 |
| Rohan Bodke | Cupertino Middle School (Sunnyvale, CA) | 3 |
| Lawson Wang | Redwood Middle School (Saratoga, CA) | 4 |
| Jian Kweon | Chaboya Middle School (San Jose, CA) | 5 |
| Brian Xue | Miller Middle School (San Jose, CA) | 6 |
| William Chen | Manhattan Beach Middle School (Manhattan Beach, CA) | 7 |
| Won Jang | Oxford Academy (Cypress, CA) | 8 |
| Robert Feng | Basis Independent Silicon Valley (San Jose, CA) | 9 |
| Feodor A Yevtushenko | Rancho San Joaquin Middle School (Irvine, CA) | 10 |
| Qiao Zhang | Oak Avenue Intermediate (Temple City, CA) | 11 |
| Alex Chen | Lawson Middle School (Cupertino, CA) | 12 |
| Vincent Lo | Chaboya Middle School (San Jose, CA) | 13 |
| Brian Bi | Miller Middle School (San Jose, CA) | 14 |
| Ryan Bansal | Miller Middle School (San Jose, CA) | 15 |
| Dylan T Frake | Lawson Middle School (Cupertino, CA) | 16 |
| Ishani Agarwal | Redwood Middle School (Saratoga, CA) | 17 |
| gordon chen | William Hopkins Jr high (Fremont, CA) | 18 |
| Alan Lu | Redwood Middle School (Saratoga, CA) | 19 |
| Kai Lum | BASIS Independent Fremont (Fremont, CA) | 20 |
| Aarush A Khare | Sunnyvale Middle School (Sunnyvale, CA) | 21 |
| Justin Kchao | Miraleste Intermediate School (Rancho Palos Verdes, CA) | 22 |
| Jerry X Guo | Ellen Fletcher Middle School (Palo Alto, CA) | 23 |
| Kevin Liu | Miller Middle School (San Jose, CA) | 24 |
| Victor Li | Jeffrey Trail Middle School (Irvine, CA) | 25 |
| Jonathan Xue | The Harker School (San Jose, CA) | 26 |
| Tei D Kim> | Stanford Online High School (Redwood City, CA) | 27 |
| Sohil Rathi | Miller Middle School (San Jose, CA) | 28 |
| Hayden Chen | Oak Valley Middle School (San Diego, CA) | 29 |
| Hugh Cheng | Harvard-Westlake School (Los Angeles, CA) | 30 |
| Owen J Xu | Martin Luther King Jr. Middle School (Berkeley, CA) | 31 |
| Amogh Janganure | Peter Hansen Elementary School (Mountain House, CA) | 32 |
| Julia Xiang | Diablo Vista Middle School (Danville, CA) | 33 |
| Gore D Fee | Harvest Park Middle School (Pleasanton, CA) | 34 |