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Portola Valley, CA Historical Household and Family Data
ACS 2010-2014 data
Total population: 4,478
| Portola Valley, CA | California | U.S. | |
| Total Households | 1,844, 100% | 12,617,280 | 116,211,092 |
| Average Household Size | 2.40, see rank | 2.95 | 2.63 |
| 1 Person Households | 438, 23.75%, see rank | 24.10% | 27.57% |
| 2 or More Person Households | 1,406, 76.25%, see rank | 75.90% | 72.43% |
| Family Households (Families) | 1,273, 69.03%, see rank | 68.69% | 66.22% |
| Average Family Size | 2.92, see rank | 3.67 | 3.32 |
| Married-Couple Family | 1,182, 64.10%, see rank | 49.11% | 48.42% |
| Nonfamily Households | 571, 30.97%, see rank | 31.31% | 33.78% |
US Census 2010 data
Total population: 4,353
| Portola Valley, CA | California | U.S. | |
| Total Households | 1,746, 100% | 12,577,498 | 116,716,292 |
| Average Household Size | 2.47, see rank | 2.90 | 2.58 |
| 1 Person Households | 420, 24.05%, see rank | 23.29% | 26.74% |
| 2 or More Person Households | 1,326, 75.95%, see rank | 76.71% | 73.26% |
| Family Households (Families) | 1,254, 71.82%, see rank | 68.71% | 66.43% |
| Average Family Size | 2.93, see rank | 3.45 | 3.14 |
| Married-Couple Family | 1,149, 65.81%, see rank | 49.40% | 48.42% |
| Nonfamily Households | 492, 28.18%, see rank | 31.29% | 33.57% |
ACS 2008-2012 data
Total population: 4,379
| Portola Valley, CA | California | U.S. | |
| Total Households | 1,826, 100% | 12,466,331 | 115,226,802 |
| Average Household Size | 2.37, see rank | 2.93 | 2.61 |
| 1 Person Households | 466, 25.52%, see rank | 24.31% | 27.45% |
| 2 or More Person Households | 1,360, 74.48%, see rank | 75.69% | 72.55% |
| Family Households (Families) | 1,228, 67.25%, see rank | 68.59% | 66.47% |
| Average Family Size | 2.93, see rank | 3.65 | 3.29 |
| Married-Couple Family | 1,117, 61.17%, see rank | 49.35% | 48.97% |
| Nonfamily Households | 598, 32.75%, see rank | 31.41% | 33.53% |
ACS 2006-2010 data
Total population: 4,283
| Portola Valley, CA | California | U.S. | |
| Total Households | 1,686, 100% | 12,392,852 | 114,235,996 |
| Average Household Size | 2.48, see rank | 2.89 | 2.59 |
| 1 Person Households | 466, 27.64%, see rank | 24.39% | 27.24% |
| 2 or More Person Households | 1,220, 72.36%, see rank | 75.61% | 72.76% |
| Family Households (Families) | 1,103, 65.42%, see rank | 68.55% | 66.75% |
| Average Family Size | 3.16, see rank | 3.60 | 3.25 |
| Married-Couple Family | 988, 58.60%, see rank | 49.76% | 49.60% |
| Nonfamily Households | 583, 34.58%, see rank | 31.45% | 33.25% |
ACS 2005-2009 data
Total population: 4,451
| Portola Valley, CA | California | U.S. | |
| Total Households | 1,689, 100% | 12,187,191 | 112,611,029 |
| Average Household Size | 2.57, see rank | 2.91 | 2.60 |
| 1 Person Households | 483, 28.60%, see rank | 24.57% | 27.32% |
| 2 or More Person Households | 1,206, 71.40%, see rank | 75.43% | 72.68% |
| Family Households (Families) | 1,106, 65.48%, see rank | 68.38% | 66.67% |
| Average Family Size | 3.31, see rank | 3.63 | 3.27 |
| Married-Couple Family | 1,012, 59.92%, see rank | 49.93% | 49.71% |
| Nonfamily Households | 583, 34.52%, see rank | 31.62% | 33.33% |
US Census 2000 data
Total population: 4,462
| Portola Valley, CA | California | U.S. | |
| Total Households | 1,700, 100% | 11,502,870 | 105,480,101 |
| Average Household Size | 2.58, see rank | 2.87 | 2.59 |
| 1 Person Households | 339, 19.94%, see rank | 23.54% | 25.82% |
| 2 or More Person Households | 1,361, 80.06%, see rank | 76.46% | 74.18% |
| Family Households (Families) | 1,269, 74.65%, see rank | 68.85% | 68.06% |
| Average Family Size | 2.93, see rank | 3.43 | 3.14 |
| Married-Couple Family | 1,176, 69.18%, see rank | 51.09% | 51.66% |
| Nonfamily Households | 431, 25.35%, see rank | 31.15% | 31.94% |
* ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.