California 16th Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | +43.2% |
| 2012 | +42.5% |
| 2016 | +55.0% |
| 2020 | +52.8% |
| 2024 | +48.1% |
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 | 16 | D | 100.0%308,476 | 0.0%0 | 308,476 |
| 2022 | 16 | D | 100.0%241,007 | 0.0%0 | 241,007 |
| 2020 | 16 | D | 59.4%128,690 | 40.6%88,039 | 216,729 |
| 2018 | 16 | D | 57.5%82,266 | 42.5%60,693 | 142,959 |
| 2016 | 16 | D | 58.0%97,473 | 42.0%70,483 | 167,956 |
| 2014 | 16 | D | 50.7%46,277 | 49.3%44,943 | 91,220 |
| 2012 | 16 | D | 57.4%84,649 | 42.6%62,801 | 147,450 |
| 2010 | 16 | D | 67.8%105,841 | 24.3%37,913 | 156,058 |
| 2008 | 16 | D | 71.3%146,481 | 24.1%49,399 | 205,327 |
| 2006 | 16 | D | 72.7%98,929 | 27.3%37,130 | 136,059 |
| 2004 | 16 | D | 70.9%129,222 | 26.3%47,992 | 182,281 |
| 2002 | 16 | D | 67.0%72,370 | 29.8%32,182 | 107,986 |
| 2000 | 16 | D | 72.1%115,118 | 23.3%37,213 | 159,746 |
| 1998 | 16 | D | 72.8%85,503 | 23.4%27,494 | 117,414 |
| 1996 | 16 | D | 65.7%94,020 | 30.2%43,197 | 143,207 |
| 1994 | 16 | D | 65.0%74,935 | 35.0%40,409 | 115,352 |
| 1992 | 16 | D | 62.0%96,661 | 32.0%49,843 | 155,883 |
| 1990 | 16 | D | 74.2%134,236 | 22.0%39,885 | 181,002 |
| 1988 | 16 | D | 78.6%177,452 | 21.4%48,375 | 225,827 |
| 1986 | 16 | D | 78.4%128,151 | 19.2%31,386 | 163,498 |
| 1984 | 16 | D | 70.8%153,377 | 27.7%60,065 | 216,687 |
| 1982 | 16 | D | 85.4%142,630 | 14.6%24,448 | 167,078 |
| 1980 | 16 | D | 71.0%158,360 | 24.5%54,675 | 223,035 |
| 1978 | 16 | D | 61.4%104,550 | 38.6%65,808 | 170,358 |
| 1976 | 16 | D | 53.4%104,545 | 46.6%91,160 | 195,705 |
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 |
California's 16th congressional district, as drawn for the 2026 elections, covers part of Silicon Valley and the San Francisco Peninsula across San Mateo and Santa Clara counties. About 758,300 people live within its 2026 boundaries, with a median age of 40.4. Measured on those boundaries, the district is among the most heavily Democratic in California. The presidential margin was D+42.5 in 2012, D+55.0 in 2016, D+52.8 in 2020, and D+48.1 in 2024.
Across the recorded series it reached a Democratic high of 55.0 points in 2016. Between 2020 and 2024 the district moved 4.7 points toward the Republican candidate; the 2024 margin was 48.1 points.
A population of 758,310, a 46% non-Hispanic-white share, and a median household income of $173,684 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 10 and Congressional District 19.
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 16th Congressional District. Akashic. https://akashic.app/cd/0616/. Accessed May 20, 2026. License: CC BY 4.0.