| District | Incumbent | Candidates | ||||
|---|---|---|---|---|---|---|
| Location | 2017 PVI | Representative | Party | First elected | Status | |
| California 1 | R+11 | Doug LaMalfa | Republican | 2012 | TBA | |
| California 2 | D+22 | Jared Huffman | Democratic | 2012 | TBA | |
| California 3 | D+5 | John Garamendi | Democratic | 2009 | TBA | |
| California 4 | R+10 | Tom McClintock | Republican | 2008 | TBA | |
| California 5 | D+21 | Mike Thompson | Democratic | 1998 | TBA | |
| California 6 | D+21 | Doris Matsui | Democratic | 2005 | TBA | |
| California 7 | D+3 | Ami Bera | Democratic | 2012 | TBA | |
| California 8 | R+9 | Paul Cook | Republican | 2012 | TBA | |
| California 9 | D+8 | Jerry McNerney | Democratic | 2006 | TBA | |
| California 10 | EVEN | Josh Harder | Democratic | 2018 | TBA | |
| California 11 | D+21 | Mark DeSaulnier | Democratic | 2014 | TBA | |
| California 12 | D+37 | Nancy Pelosi | Democratic | 1987 | TBA | |
| California 13 | D+40 | Barbara Lee | Democratic | 1998 | TBA | |
| California 14 | D+27 | Jackie Speier | Democratic | 2008 | TBA | |
| California 15 | D+20 | Eric Swalwell | Democratic | 2012 | TBA | |
| California 16 | D+9 | Jim Costa | Democratic | 2004 | TBA | |
| California 17 | D+25 | Ro Khanna | Democratic | 2016 | TBA | |
| California 18 | D+23 | Anna Eshoo | Democratic | 1992 | TBA | |
| California 19 | D+24 | Zoe Lofgren | Democratic | 1994 | TBA | |
| California 20 | D+23 | Jimmy Panetta | Democratic | 2016 | TBA | |
| California 21 | D+5 | TJ Cox | Democratic | 2012 | TBA | |
| California 22 | R+8 | Devin Nunes | Republican | 2002 | TBA | |
| California 23 | R+14 | Kevin McCarthy | Republican | 2006 | TBA | |
| California 24 | D+7 | Salud Carbajal | Democratic | 2016 | TBA | |
| California 25 | EVEN | Katie Hill | Democratic | 2018 | TBA | |
| California 26 | D+7 | Julia Brownley | Democratic | 2012 | TBA | |
| California 27 | D+16 | Judy Chu | Democratic | 2009 | TBA | |
| California 28 | D+23 | Adam Schiff | Democratic | 2000 | TBA | |
| California 29 | D+29 | Tony Cárdenas | Democratic | 2012 | TBA | |
| California 30 | D+18 | Brad Sherman | Democratic | 1996 | TBA | |
| California 31 | D+8 | Pete Aguilar | Democratic | 2014 | TBA | |
| California 32 | D+17 | Grace Napolitano | Democratic | 1998 | TBA | |
| California 33 | D+16 | Ted Lieu | Democratic | 2014 | TBA | |
| California 34 | D+35 | Jimmy Gomez | Democratic | 2017 | TBA | |
| California 35 | D+19 | Norma Torres | Democratic | 2014 | TBA | |
| California 36 | D+2 | Raul Ruiz | Democratic | 2012 | TBA | |
| California 37 | D+37 | Karen Bass | Democratic | 2010 | TBA | |
| California 38 | D+17 | Linda Sánchez | Democratic | 2002 | TBA | |
| California 39 | EVEN | Gil Cisneros | Democratic | 2018 | TBA | |
| California 40 | D+33 | Lucille Roybal-Allard | Democratic | 1992 | TBA | |
| California 41 | D+12 | Mark Takano | Democratic | 2012 | TBA | |
| California 42 | R+9 | Ken Calvert | Republican | 1992 | TBA | |
| California 43 | D+29 | Maxine Waters | Democratic | 1990 | TBA | |
| California 44 | D+35 | Nanette Barragán | Democratic | 2016 | TBA | |
| California 45 | R+3 | Katie Porter | Democratic | 2018 | TBA | |
| California 46 | D+15 | Lou Correa | Democratic | 2016 | TBA | |
| California 47 | D+13 | Alan Lowenthal | Democratic | 2012 | TBA | |
| California 48 | R+4 | Harley Rouda | Democratic | 2018 | TBA | |
| California 49 | R+1 | Mike Levin | Democratic | 2018 | TBA | |
| California 50 | R+11 | Duncan Hunter | Republican | 2008 | TBA | |
| California 51 | D+22 | Juan Vargas | Democratic | 2012 | TBA | |
| California 52 | D+6 | Scott Peters | Democratic | 2012 | TBA | |
| California 53 | D+14 | Susan Davis | Democratic | 2000 | TBA | |
