| Index | San Carlos | California | National |
| Income per capita | $142,700 | $45,980 | $44,883 |
| Median household income | $284,735 | $95,535 | $81,333 |
| Median income owner occupied | $349,078 | $130,228 | $106,172 |
| Median income renter occupied | $169,976 | $64,137 | $52,080 |
| Median earnings male | $172,419 | $52,776 | $54,343 |
| Median earnings female | $116,817 | $38,938 | $38,439 |
| Unemployment rate | 3.1% | 6.8% | 4.9% |
| Poverty level | 3.2% | 15.8% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 6.2% | 6.2% |
| Manufacturing sector | 13.4% | 13.4% |
| Financial & insurance services | 6.3% | 6.3% |
| Wholesale & retail services | 8.0% | 8.0% |
| Public administration | 2.3% | 2.3% |
| Transportation, warehousing & utilities | 3.8% | 3.8% |
| Education, health & social services | 10.2% | 10.2% |
| Other | 38.3% | 38.3% |
| City | Population | Household Income | National Avg. |
| Atherton, CA | 7,303 | $377,485 | 364.1% |
| Loyola, CA | 3,526 | $376,752 | 363.2% |
| Hillsborough, CA | 11,923 | $376,687 | 363.1% |
| Woodside, CA | 5,786 | $374,998 | 361.1% |
| Los Altos Hills, CA | 8,670 | $373,124 | 358.8% |
| San Carlos, CA | 30,787 | $284,735 | 250.1% |
| City | Population | Household Income | National Avg. |
| Sainte-Julie, QC | 30,753 | n/a | |
| Morristown, TN | 30,738 | $48,963 | 39.8% |
| Rahway, NJ | 30,734 | $117,549 | 44.5% |
| Cornelius, NC | 30,849 | $136,016 | 67.2% |
| Duluth, GA | 30,718 | $108,762 | 33.7% |
| San Carlos, CA | 30,787 | $284,735 | 250.1% |