USA.com / California / San Mateo County / Portola Valley, CA / 94028 / Population and Races / Historical Household and Family Data
94028 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 6,720
| 94028 Zip Code | California | U.S. | |
| Total Households | 2,671, 100% | 12,617,280 | 116,211,092 |
| Average Household Size | 2.49, see rank | 2.95 | 2.63 |
| 1 Person Households | 553, 20.70%, see rank | 24.10% | 27.57% |
| 2 or More Person Households | 2,118, 79.30%, see rank | 75.90% | 72.43% |
| Family Households (Families) | 1,972, 73.83%, see rank | 68.69% | 66.22% |
| Average Family Size | 2.94, see rank | 3.67 | 3.32 |
| Married-Couple Family | 1,834, 68.66%, see rank | 49.11% | 48.42% |
| Nonfamily Households | 699, 26.17%, see rank | 31.31% | 33.78% |
US Census 2010 data
Total population: 6,534
| 94028 Zip Code | California | U.S. | |
| Total Households | 2,567, 100% | 12,577,498 | 116,716,292 |
| Average Household Size | 2.53, see rank | 2.90 | 2.58 |
| 1 Person Households | 557, 21.70%, see rank | 23.29% | 26.74% |
| 2 or More Person Households | 2,010, 78.30%, see rank | 76.71% | 73.26% |
| Family Households (Families) | 1,894, 73.78%, see rank | 68.71% | 66.43% |
| Average Family Size | 2.94, see rank | 3.45 | 3.14 |
| Married-Couple Family | 1,744, 67.94%, see rank | 49.40% | 48.42% |
| Nonfamily Households | 673, 26.22%, see rank | 31.29% | 33.57% |
ACS 2008-2012 data
Total population: 6,633
| 94028 Zip Code | California | U.S. | |
| Total Households | 2,607, 100% | 12,466,331 | 115,226,802 |
| Average Household Size | 2.51, see rank | 2.93 | 2.61 |
| 1 Person Households | 588, 22.55%, see rank | 24.31% | 27.45% |
| 2 or More Person Households | 2,019, 77.45%, see rank | 75.69% | 72.55% |
| Family Households (Families) | 1,875, 71.92%, see rank | 68.59% | 66.47% |
| Average Family Size | 3.02, see rank | 3.65 | 3.29 |
| Married-Couple Family | 1,717, 65.86%, see rank | 49.35% | 48.97% |
| Nonfamily Households | 732, 28.08%, see rank | 31.41% | 33.53% |
US Census 2000 data
Total population: 6,595
| 94028 Zip Code | California | U.S. | |
| Total Households | 2,488, 100% | 11,502,870 | 105,480,101 |
| Average Household Size | 2.61, see rank | 2.87 | 2.59 |
| 1 Person Households | 460, 18.49%, see rank | 23.54% | 25.82% |
| 2 or More Person Households | 2,028, 81.51%, see rank | 76.46% | 74.18% |
| Family Households (Families) | 1,898, 76.29%, see rank | 68.85% | 68.06% |
| Average Family Size | 2.94, see rank | 3.43 | 3.14 |
| Married-Couple Family | 1,762, 70.82%, see rank | 51.09% | 51.66% |
| Nonfamily Households | 590, 23.71%, 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.