- In the United States House of Representatives, Riverside County is split between 4 congressional districts:[41]
- California's 36th congressional district, represented by Democrat Raul Ruiz
- California's 41st congressional district, represented by Democrat Mark Takano
- California's 42nd congressional district, represented by Republican Ken Calvert and
- California's 50th congressional district, represented by Republican Duncan D. Hunter.
- In the California State Senate, the county is split between 3 legislative districts:[42]
- the 23rd Senate District, represented by Republican Mike Morrell,
- the 28th Senate District, represented by Republican Jeff Stone, and
- the 31st Senate District, represented by Democrat Richard Roth.
- In the California State Assembly, the county is split between 7 legislative districts:[43]
- the 42nd Assembly District, represented by Republican Chad Mayes,
- the 56th Assembly District, represented by Democrat Eduardo Garcia,
- the 60th Assembly District, represented by Democrat Sabrina Cervantes,
- the 61st Assembly District, represented by Democrat Jose Medina,
- the 67th Assembly District, represented by Republican Melissa Melendez,
- the 71st Assembly District, represented by Republican Randy Voepel, and
- the 75th Assembly District, represented by Republican Marie Waldron.
