USA.com / California / Contra Costa County / Walnut Creek, CA / 94597 / Population and Races / Historical Household and Family Data
94597 Zip Code Historical Household and Family Data
ACS 2010-2014 data
Total population: 20,645
| 94597 Zip Code | California | U.S. | |
| Total Households | 9,714, 100% | 12,617,280 | 116,211,092 |
| Average Household Size | 2.12, see rank | 2.95 | 2.63 |
| 1 Person Households | 3,620, 37.27%, see rank | 24.10% | 27.57% |
| 2 or More Person Households | 6,094, 62.73%, see rank | 75.90% | 72.43% |
| Family Households (Families) | 5,106, 52.56%, see rank | 68.69% | 66.22% |
| Average Family Size | 2.89, see rank | 3.67 | 3.32 |
| Married-Couple Family | 4,193, 43.16%, see rank | 49.11% | 48.42% |
| Nonfamily Households | 4,608, 47.44%, see rank | 31.31% | 33.78% |
US Census 2010 data
Total population: 20,277
| 94597 Zip Code | California | U.S. | |
| Total Households | 9,541, 100% | 12,577,498 | 116,716,292 |
| Average Household Size | 2.10, see rank | 2.90 | 2.58 |
| 1 Person Households | 3,586, 37.59%, see rank | 23.29% | 26.74% |
| 2 or More Person Households | 5,955, 62.41%, see rank | 76.71% | 73.26% |
| Family Households (Families) | 4,918, 51.55%, see rank | 68.71% | 66.43% |
| Average Family Size | 2.81, see rank | 3.45 | 3.14 |
| Married-Couple Family | 3,820, 40.04%, see rank | 49.40% | 48.42% |
| Nonfamily Households | 4,623, 48.45%, see rank | 31.29% | 33.57% |
ACS 2008-2012 data
Total population: 19,933
| 94597 Zip Code | California | U.S. | |
| Total Households | 9,569, 100% | 12,466,331 | 115,226,802 |
| Average Household Size | 2.07, see rank | 2.93 | 2.61 |
| 1 Person Households | 3,874, 40.48%, see rank | 24.31% | 27.45% |
| 2 or More Person Households | 5,695, 59.52%, see rank | 75.69% | 72.55% |
| Family Households (Families) | 4,729, 49.42%, see rank | 68.59% | 66.47% |
| Average Family Size | 2.92, see rank | 3.65 | 3.29 |
| Married-Couple Family | 3,807, 39.78%, see rank | 49.35% | 48.97% |
| Nonfamily Households | 4,840, 50.58%, see rank | 31.41% | 33.53% |
* 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.