Bay Area mega-metro where Democrats routinely clear 75% in federal races
Home to roughly 4.7 million residents, this metro combines San Francisco's dense urban core with Oakland's majority-minority electorate and Fremont's fast-growing South Asian and Chinese American communities, producing some of the most lopsided Democratic margins in the country.
| County | Pop. | Margin | Dem | Rep | Total | Share |
|---|---|---|---|---|---|---|
| Alameda | 1.6M | D+53.5 | 499,551 | 140,789 | 669,907 | 8.1% |
| Alameda | 1.6M | D+53.5 | 499,551 | 140,789 | 669,907 | 8.1% |
| Alameda | 1.5M | D+53.5 | 499,551 | 140,789 | 669,907 | 8.1% |
| Alameda | 1.4M | D+53.5 | 499,551 | 140,789 | 669,907 | 8.1% |
| Contra Costa | 1.2M | D+38.0 | 356,008 | 155,308 | 528,904 | 6.4% |
| Contra Costa | 1.1M | D+38.0 | 356,008 | 155,308 | 528,904 | 6.4% |
| Contra Costa | 1.0M | D+38.0 | 356,008 | 155,308 | 528,904 | 6.4% |
| Contra Costa | 949K | D+38.0 | 356,008 | 155,308 | 528,904 | 6.4% |
| San Francisco | 850K | D+64.8 | 323,719 | 62,594 | 402,964 | 4.9% |
| San Francisco | 830K | D+64.8 | 323,719 | 62,594 | 402,964 | 4.9% |
| San Francisco | 797K | D+64.8 | 323,719 | 62,594 | 402,964 | 4.9% |
| San Francisco | 777K | D+64.8 | 323,719 | 62,594 | 402,964 | 4.9% |
| San Mateo | 755K | D+50.3 | 242,957 | 76,616 | 330,510 | 4.0% |
| San Mateo | 742K | D+50.3 | 242,957 | 76,616 | 330,510 | 4.0% |
| San Mateo | 707K | D+50.3 | 242,957 | 76,616 | 330,510 | 4.0% |
| San Mateo | 702K | D+50.3 | 242,957 | 76,616 | 330,510 | 4.0% |
| Marin | 259K | D+63.9 | 116,152 | 24,054 | 144,113 | 1.7% |
| Marin | 258K | D+63.9 | 116,152 | 24,054 | 144,113 | 1.7% |
| Marin | 247K | D+63.9 | 116,152 | 24,054 | 144,113 | 1.7% |
| Marin | 247K | D+63.9 | 116,152 | 24,054 | 144,113 | 1.7% |
| Group | Local | National |
|---|---|---|
▶White (Non-Hispanic)(13) | 42.4% | 57.4% |
▶Asian(6) | 23.6% | 6.0% |
▶Hispanic / Latino(20) | 20.8% | 19.3% |
▶Black / African American(14) | 8.1% | 12.2% |
Multiracial / Other | 4.2% | 4.0% |
▶Middle Eastern / North African(11) | 1.7% | 0.9% |
▶Native American / Alaska Native(3) | 0.6% | 0.9% |
▶Native Hawaiian / Pacific Islander(6) | 0.2% | 0.2% |
Catholic-Evangelical edge: +37.7pp (vs national 4.5pp). A strongly Catholic-leaning religious profile, which nationally correlates with Democratic-leaning urban and suburban communities.
| Tradition | % Pop | % Adherents | US Pop | US Adherents |
|---|---|---|---|---|
| 22.0% | 55.7% | — | — | |
| 7.4% | 18.7% | — | — | |
| 5.3% | 13.5% | — | — | |
| 2.3% | 5.7% | — | — | |
| 1.8% | 4.6% | — | — | |
LDS (Mormon) | 1.5% | 3.8% | — | — |
| 0.7% | 1.8% | — | — | |
Non-religiousPopulation | 60.5% | — | — | — |
Who lives in the San Francisco-Oakland-Fremont, CA metro area? 17,564,833 residents across 20 counties.
45% of adults hold a bachelor's degree — 12pp above the national average. Places with similar education levels vote D+16 on average nationally.
Scale, voting-age share, and this geography's footprint inside the national electorate.
Income, attainment, and ownership indicators that often shape coalition structure and turnout behavior.
Age structure, language use, and nativity signals that explain how this geography differs from state and nation.
| Offices | Margin A | Margin B | Split |
|---|---|---|---|
| President vs Senate | D+52.0 | D+50.4 | 1.6pp |