| | Fountain Valley, CA | San Marcos, CA | United States |
| Unemployment Rate | 6.2% | 5.9% | 6.0% |
| Recent Job Growth | 0.6% | 1.4% | 1.6% |
| Future Job Growth | 30.8% | 38.4% | 33.5% |
| Sales Taxes | 8.8% | 7.8% | 6.2% |
| Income Taxes | 8.0% | 8.0% | 4.6% |
| Income per Cap. | $41,359 | $39,122 | $37,638 |
| Household Income | $92,765 | $90,620 | $69,021 |
| Family Median Income | $112,151 | $110,202 | $85,028 |
| space | | | |
| Est. Households By Income | | | |
| | Fountain Valley, CA | San Marcos, CA | United States |
| Income Less Than 15K | 6.8% | 7.7% | 9.4% |
| Income between 15K and 20K | 2.7% | 2.4% | 3.8% |
| Income between 20K and 30K | 5.9% | 5.9% | 8.1% |
| Income between 30K and 40K | 5.3% | 7.2% | 8.0% |
| Income between 40K and 50K | 5.1% | 6.9% | 7.6% |
| Income between 50K and 60K | 5.4% | 4.1% | 7.2% |
| Income between 60K and 75K | 9.4% | 8.0% | 9.6% |
| Income between 75K and 100K | 12.4% | 11.6% | 12.8% |
| Income between 100K and 150K | 18.6% | 17.2% | 16.3% |
| Income between 150K and 200K | 11.3% | 13.6% | 7.8% |
| Income greater than 200K | 17.1% | 15.3% | 9.5% |
| space1 | | | |
| Population By Occupation | | | |
| | Fountain Valley, CA | San Marcos, CA | United States |
| Management, business, finance | 19.3% | 20.2% | 16.4% |
| Engineering, computers, science | 8.3% | 8.2% | 6.5% |
| Community, social services | 0.9% | 1.3% | 1.8% |
| Legal | 1.3% | 0.8% | 1.2% |
| Education, library | 4.9% | 5.5% | 6.2% |
| Arts, design, media, sports, entertainment | 2.7% | 1.6% | 2.0% |
| Healthcare practitioners and technology | 6.4% | 4.6% | 6.2% |
| Healthcare support | 3.2% | 3.9% | 3.3% |
| Firefighters, law enforcement | 1.4% | 1.6% | 2.1% |
| Food preparation, serving | 6.4% | 5.4% | 5.4% |
| Building maintenance | 2.3% | 5.1% | 3.6% |
| Personal care | 2.9% | 2.8% | 2.6% |
| Sales, office, administrative support | 25.3% | 20.1% | 20.9% |
| Farming, fishing, forestry | 0.1% | 0.5% | 0.6% |
| Construction, extraction, maintenance/repair | 4.6% | 7.3% | 8.1% |
| Production, transportation, material moving | 9.9% | 11.0% | 13.1% |