| State: | California |
| District Number: | 1 |
| Image Caption: | Interactive map of district boundaries since 2023 (Used in the 2022 elections) |
| Representative: | Doug LaMalfa |
| Party: | Republican |
| Residence: | Oroville |
| Population: | 755,464 |
| Population Year: | 2023 |
| Median Income: | $69,212[1] |
| Percent White: | 61.5 |
| Percent Hispanic: | 22.5 |
| Percent Black: | 1.7 |
| Percent Asian: | 5.6 |
| Percent Native American: | 1.8 |
| Percent More Than One Race: | 6.1 |
| Percent Other Race: | 0.8 |
| Cpvi: | R+12[2] |
California's 1st congressional district is a U.S. congressional district in California. Doug LaMalfa, a Republican, has represented the district since January 2013. Currently, it encompasses the northeastern part of the state. Since the 2022 election, it includes the counties of Butte, Colusa, Glenn, Lassen, Modoc, Shasta, Siskiyou, Sutter, and Tehama, and most of Yuba County. The largest cities in the district are Chico, Redding, and Yuba City.[3]
Prior to redistricting in 2021, it included the counties of Butte, Lassen, Modoc, Plumas, Shasta, Sierra, Siskiyou, and Tehama, most of Nevada County, part of Glenn County, and part of Placer County. In the 2021 redistricting, it added the Yuba–Sutter area and removed most of its share of the Sierra Nevada.[4]
Prior to 2013, the GOP last held the seat in 1998 when U.S. Representative Frank Riggs decided to run for the U.S. Senate. Riggs was replaced by long-time Democratic Assemblyman and State Senator Mike Thompson. Redistricting in 2001 added Democratic-leaning areas of Yolo County.
John Kerry won the district in 2004 presidential election with 59.7% of the vote. Barack Obama carried the district in 2008 presidential election with 65.60% of the vote. The redistricting after the 2010 census made the district much more Republican-leaning; Mitt Romney and Donald Trump won the district by double digits in 2012, 2016, and 2020 respectively.
| Year | Office | Results |
|---|---|---|
| 1990 | Governor[5] | Feinstein 51.6–42.3% |
| 1992 | President[6] | Clinton 46.8–29.2% |
| Senator[7] | Boxer 49.8–39.4% | |
| Senator (Special) | Feinstein 57.9–33.8% | |
| 1994 | Governor[8] | Wilson 53.0–41.8% |
| Senator[9] | Feinstein 47.9–43.1% | |
| 1996 | President[10] | Clinton 48.2–35.4% |
| 1998 | Governor[11] | Davis 56.8%–35.9% |
| Senator[12] | Boxer 53.2–41.8% | |
| 2000 | President[13] | Gore 50.0–41.0% |
| Senator[14] | Feinstein 53.1–36.0% | |
| 2002 | Governor[15] | Davis 46.9–36.3% |
| 2003 | Recall[16] [17] | align="right" No 53.0–47.0% |
| Schwarzenegger 40.8–36.0% | ||
| 2004 | President[18] | Kerry 59.7–38.4% |
| Senator[19] | Boxer 60.5–34.2% | |
| 2006 | Governor[20] | Schwarzenegger 51.0–40.9% |
| Senator[21] | Feinstein 62.7–29.6% | |
| 2008 | President[22] | Obama 65.6–31.7% |
| 2010 | Governor[23] | Brown 57.0–35.9% |
| Senator[24] | Boxer 59.4–34.6% | |
| 2012 | President[25] | Romney 56.6–40.3% |
| Senator[26] | Emken 57.5–42.5% | |
| 2014 | Governor[27] | Kashkari 56.5–43.5% |
| 2016 | President[28] | Trump 56.2–36.5% |
| Senator[29] | Harris 59.7–40.3% | |
| 2018 | Governor[30] | Cox 61.2–38.8% |
| Senator[31] | de Leon 59.9–40.1% | |
| 2020 | President | Trump 56.4–41.1% |
| 2021 | Recall[32] | align="right" Yes 61.8–38.2% |
| 2022 | Governor[33] | Dahle 67.2–32.8% |
| Senator | Meuser 63.7–36.3% |
| County | Seat | Population | ||
|---|---|---|---|---|
| 7 | Butte | Oroville | 207,172 | |
| 11 | Colusa | Colusa | 22,037 | |
| 21 | Glenn | Willows | 28,129 | |
| 35 | Lassen | Susanville | 28,861 | |
| 49 | Modoc | Alturas | 8,500 | |
| 89 | Shasta | Redding | 180,366 | |
| 93 | Siskiyou | Yreka | 42,905 | |
| 101 | Sutter | Yuba City | 97,948 | |
| 103 | Tehama | Red Bluff | 64,896 | |
| 115 | Yuba | Marysville | 85,722 |
Yuba County is split between this district and the 3rd district. They are partitioned by State Highway 70, Ellis Rd, and Union Pacific. The 1st district takes in the city of Marysville and the surrounding census-designated areas.
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