California's 48th Congressional District: Map, Representative, Demographics

This page describes the district as drawn for 2023–2026. New lines take effect for the 2026 election.

Current district lines U.S. Census Bureau TIGER/Line ↗

Counties in this district

Find your district on the district map.

Your representatives

Darrell Issa

Darrell Issa

Republican

Representative since Jan 3, 2021

Raised $2,090,221 · Cash on hand $2,715,610 (2026 cycle) · FEC filing ↗ · Through Jun 30, 2026

Full profile →

How Darrell Issa voted

DateMeasurePositionChamber result
9/16/26
House
Retire through Ownership Act
On Motion to Suspend the Rules and Pass Suspension of the rulesA fast-track House procedure, usually for measures expected to have broad support. Debate is limited to 40 minutes, no amendments can be offered, and it needs a two-thirds vote of members voting — not a simple majority. A yes vote passes the bill.Rules of the House, Rule XV, clause 1 ↗
Passage
Yea
Passed
9/16/26
House
Water Resources Development Act of 2026
On Motion to Suspend the Rules and Pass, as Amended Suspension of the rulesA fast-track House procedure, usually for measures expected to have broad support. Debate is limited to 40 minutes, no amendments can be offered, and it needs a two-thirds vote of members voting — not a simple majority. A yes vote passes the bill. “As amended” means changes written into the motion itself are included.Rules of the House, Rule XV, clause 1 ↗
Passage
Yea
Passed
9/16/26
House
Ratepayer Protection Act
On Motion to Suspend the Rules and Pass, as Amended Suspension of the rulesA fast-track House procedure, usually for measures expected to have broad support. Debate is limited to 40 minutes, no amendments can be offered, and it needs a two-thirds vote of members voting — not a simple majority. A yes vote passes the bill. “As amended” means changes written into the motion itself are included.Rules of the House, Rule XV, clause 1 ↗
Passage
Yea
Passed
9/16/26
House
Providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule issued by the Environmental Protection Agency relating to the "California State Nonroad Engine Pollution Control Standards; Commercial Harbor Craft Regulations; Notice of Decision".
On Passage PassageThe vote on whether this chamber approves the measure — usually by a simple majority of those voting. It becomes law only once both chambers pass the same text and the president signs it, or Congress overrides a veto.House: The Legislative Process ↗
Passage
Yea
Passed
9/16/26
House
PROOF Act
On Passage PassageThe vote on whether this chamber approves the measure — usually by a simple majority of those voting. It becomes law only once both chambers pass the same text and the president signs it, or Congress overrides a veto.House: The Legislative Process ↗
Passage
Yea
Passed

See full voting record →

2026 elections

Election day is Tuesday, Nov. 3, 2026.

In 2026 this area votes in: CA-48, CA-52, CA-51, CA-50, CA-40

Past results

2022 general election

CandidatePartyVotesPercent
Darrell IssaWinnerR155,17160.36%
Stephen HoulahanD101,90039.64%

FEC ↗

2020 general election

Held under different district lines
CandidatePartyVotesPercent
Michelle SteelWinnerR201,73851.06%
Harley RoudaD193,36248.94%

FEC ↗

Demographics

MeasureThis districtCaliforniaUnited States
Population768,43939,431,263340,110,990
Median age (years)39.238.439.2
Median household income$114,972$100,149$81,604
Below poverty level7.2%11.8%12.1%
Bachelor's degree or higher (age 25+)35.2%38.1%36.8%
Race and ethnicity
Hispanic or Latino (of any race)31.9%40.8%20.0%
Not Hispanic or Latino
White alone48.8%32.6%56.3%
Black or African American alone2.8%5.1%11.7%
Asian alone8.5%15.8%6.2%
American Indian and Alaska Native alone, Native Hawaiian and Other Pacific Islander alone, Some Other Race alone, Two or More Races8.1%5.7%5.8%
Foreign-born17.6%27.6%14.8%
Veterans (civilian adults 18+)7.9%4.0%5.9%

Census estimates. American Community Survey 2024 1-year, Data Profile ↗