| | McFarland, CA | Blythe, CA | United States |
| Population | 14,085 | 18,125 | 329,725,481 |
| Female Population | 46.6% | 31.7% | 50.5% |
| Male Population | 53.4% | 68.3% | 49.5% |
| Median Age | 26.3 | 35.8 | 38.4 |
| space3 | | | |
| Population - 2010 | 12,707 | 20,588 | 309,327,143 |
| Population - 2000 | 9,618 | 12,155 | 285,036,114 |
| Population - 1990 | 7,005 | 8,428 | 251,960,433 |
| Pop. 2000 to Now | 29.8% | 61.9% | 15.6% |
| Pop. 1990 to Now | 78.2% | 133.4% | 30.8% |
| space4 | | | |
| Population Density | 5,279.2 | 681.2 | 93.4 |
| Land Area | 2.7 | 26.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.8 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | McFarland, CA | Blythe, CA | United States |
| Age 0 to 4 | 7.4% | 5.6% | 5.9% |
| Age 5 to 9 | 10.5% | 5.1% | 6.1% |
| Age 10 to 14 | 11.9% | 5.1% | 6.6% |
| Age 15 to 17 | 4.9% | 3.4% | 3.9% |
| Age 18 to 20 | 6.2% | 2.6% | 4.0% |
| Age 21 to 24 | 7.8% | 7.0% | 5.2% |
| Age 25 to 34 | 13.9% | 20.1% | 13.8% |
| Age 35 to 44 | 15.9% | 17.9% | 12.9% |
| Age 45 to 54 | 8.4% | 12.7% | 12.6% |
| Age 55 to 59 | 3.7% | 5.5% | 6.7% |
| Age 60 to 64 | 4.4% | 5.4% | 6.3% |
| Age 65 to 74 | 4.4% | 5.6% | 9.6% |
| Age 75 to 84 | 0.6% | 3.0% | 4.5% |
| Age 85 and over | 0.2% | 1.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | McFarland, CA | Blythe, CA | United States |
| White | 7.5% | 24.2% | 59.4% |
| Black | 0.9% | 11.9% | 12.2% |
| Asian | 0.5% | 2.2% | 5.6% |
| Native American | 0.1% | 0.7% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.4% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 0.4% | 2.9% | 3.2% |
| Hispanic | 90.6% | 57.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | McFarland, CA | Blythe, CA | United States |
| Married Population | 46.4% | 34.8% | 49.8% |
| Currently Married | 44.0% | 32.3% | 48.0% |
| Married but Separated | 2.4% | 2.5% | 1.8% |
| Single Population | 53.6% | 65.2% | 50.2% |
| Never Married | 43.6% | 49.3% | 33.8% |
| Divorced | 7.1% | 11.9% | 10.8% |
| Widowed | 2.8% | 4.0% | 5.6% |
| space5 | | | |
| Household Size | 4.01 | 2.83 | 2.60 |
| Households | 3,259 | 3,945 | 124,010,992 |
| Family Households | 2,764 | 2,845 | 80,755,759 |
| Married couple, w/children | 45.4% | 22.2% | 30.5% |
| Married couple, no children | 18.7% | 41.5% | 42.9% |
| Non Family Households | 495 | 1,100 | 43,255,233 |
| Single householder, w/children | 28.7% | 31.1% | 15.8% |
| Single householder, no children | 7.2% | 5.2% | 10.8% |