| Index | San Marcos | California | National |
| Income per capita | $51,705 | $45,980 | $44,883 |
| Median household income | $131,139 | $95,535 | $81,333 |
| Median income owner occupied | $167,639 | $130,228 | $106,172 |
| Median income renter occupied | $89,773 | $64,137 | $52,080 |
| Median earnings male | $64,025 | $52,776 | $54,343 |
| Median earnings female | $46,883 | $38,938 | $38,439 |
| Unemployment rate | 2.8% | 6.8% | 4.9% |
| Poverty level | 10.0% | 15.8% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 11.7% | 11.7% |
| Manufacturing sector | 14.7% | 14.7% |
| Financial & insurance services | 3.1% | 3.1% |
| Wholesale & retail services | 14.3% | 14.3% |
| Public administration | 3.1% | 3.1% |
| Transportation, warehousing & utilities | 5.5% | 5.5% |
| Education, health & social services | 9.7% | 9.7% |
| Other | 35.0% | 35.0% |
| City | Population | Household Income | National Avg. |
| Fairbanks Ranch, CA | 3,019 | $333,214 | 309.7% |
| Rancho Santa Fe, CA | 2,734 | $260,620 | 220.4% |
| Del Mar, CA | 4,455 | $243,715 | 199.7% |
| Encinitas, CA | 64,861 | $181,311 | 122.9% |
| Poway, CA | 51,311 | $173,624 | 113.5% |
| San Marcos, CA | 99,851 | $131,139 | 61.2% |
| City | Population | Household Income | National Avg. |
| Yuma, AZ | 99,763 | $78,873 | 3.0% |
| Lawrence, KS | 99,660 | $81,282 | 0.1% |
| Flint, MI | 99,436 | $44,927 | 44.8% |
| Erie, PA | 100,285 | $58,044 | 28.6% |
| Longmont, CO | 99,360 | $118,222 | 45.4% |
| San Marcos, CA | 99,851 | $131,139 | 61.2% |