California 39th Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | +21.7% |
| 2012 | +26.0% |
| 2016 | +28.6% |
| 2020 | +26.0% |
| 2024 | +9.5% |
Federal officeholders only. State and local officeholders are planned for the next data pass.
U.S. House
Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.
| Year | District | Won | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | 39 | D | 56.7%130,191 | 43.3%99,469 | 229,660 |
| 2022 | 39 | D | 57.7%75,896 | 42.3%55,701 | 131,597 |
| 2020 | 39 | R | 49.4%169,837 | 50.6%173,946 | 343,783 |
| 2018 | 39 | D | 51.6%126,002 | 48.4%118,391 | 244,393 |
| 2016 | 39 | R | 42.8%112,679 | 57.2%150,777 | 263,456 |
| 2014 | 39 | R | 31.5%41,906 | 68.5%91,319 | 133,225 |
| 2012 | 39 | R | 42.2%106,360 | 57.8%145,607 | 251,967 |
| 2010 | 39 | D | 63.3%81,590 | 32.6%42,037 | 128,961 |
| 2008 | 39 | D | 69.7%125,289 | 30.3%54,533 | 179,822 |
| 2006 | 39 | D | 65.9%72,149 | 34.1%37,384 | 109,533 |
| 2004 | 39 | D | 60.7%100,132 | 39.3%64,832 | 164,964 |
| 2002 | 39 | D | 54.8%52,256 | 40.8%38,925 | 95,346 |
| 2000 | 39 | R | 31.3%64,398 | 62.9%129,294 | 205,564 |
| 1998 | 39 | R | 34.0%52,815 | 62.6%97,366 | 155,465 |
| 1996 | 39 | R | 31.9%61,392 | 62.8%120,761 | 192,290 |
| 1994 | 39 | R | 29.0%49,696 | 66.4%113,641 | 171,244 |
| 1992 | 39 | R | 38.2%81,728 | 57.3%122,472 | 213,684 |
| 1990 | 39 | R | 30.8%53,670 | 65.3%113,849 | 174,228 |
| 1988 | 39 | R | 22.7%52,162 | 73.8%169,360 | 229,359 |
| 1986 | 39 | R | 24.0%42,377 | 74.5%131,603 | 176,732 |
| 1984 | 39 | R | 23.8%54,889 | 76.2%175,788 | 230,677 |
| 1982 | 39 | R | 26.0%46,681 | 72.2%129,539 | 179,372 |
| 1980 | 39 | R | 23.7%54,504 | 76.3%175,228 | 229,732 |
| 1978 | 39 | R | 36.3%63,891 | 63.7%112,160 | 176,051 |
| 1976 | 39 | R | 41.4%86,745 | 58.6%122,657 | 209,402 |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | D | 58.9%9,036,252 | 41.1%6,312,594 | 15,348,846 |
| 2022 | D | 61.1%6,621,621 | 38.9%4,222,029 | 10,843,650 |
| 2018 | D | 100.0%11,113,364 | 0.0%0 | 11,113,364 |
| 2016 | D | 100.0%12,244,170 | 0.0%0 | 12,244,170 |
| 2012 | D | 62.5%7,864,624 | 37.5%4,713,887 | 12,578,511 |
| 2010 | D | 52.2%5,218,441 | 42.2%4,217,366 | 10,000,093 |
| 2006 | D | 59.4%5,076,289 | 35.0%2,990,822 | 8,541,150 |
| 2004 | D | 57.7%6,955,728 | 37.8%4,555,922 | 12,053,242 |
| 2000 | D | 55.8%5,932,522 | 36.6%3,886,853 | 10,623,608 |
| 1998 | D | 53.1%4,410,056 | 43.0%3,575,078 | 8,311,905 |
| 1994 | D | 46.7%3,979,152 | 44.8%3,817,025 | 8,513,916 |
| 1992 | D | 47.9%5,173,467 | 43.0%4,644,182 | 10,799,436 |
| 1988 | R | 44.0%4,287,253 | 52.8%5,143,409 | 9,743,547 |
| 1986 | D | 49.3%3,646,672 | 47.9%3,541,804 | 7,398,462 |
| 1982 | R | 44.8%3,494,968 | 51.5%4,022,565 | 7,805,450 |
| 1980 | D | 56.5%4,704,098 | 37.1%3,091,671 | 8,324,012 |
| 1976 | R | 46.9%3,502,862 | 50.2%3,748,973 | 7,470,586 |
CA-39 spans the eastern San Gabriel Valley, where a large Asian American population—including substantial Chinese and Korean communities—has made it one of the most competitive suburban districts in the state, decided by just over a point in 2024.
Across the recorded series it reached a Democratic high of 28.6 points in 2016. Between 2020 and 2024 the district moved 16.5 points toward the Republican candidate; the 2024 margin was 9.5 points.
A population of 755,013, a 29% non-Hispanic-white share, and a median household income of $92,011 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 33 and Congressional District 13.
The congressional districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
California 39th Congressional District. Akashic. https://akashic.app/cd/0639/. Accessed May 20, 2026. License: CC BY 4.0.