Duncan, IA Historical Household and Family Data
ACS 2010-2014 data
Total population: 113
| Duncan, IA | Iowa | U.S. | |
| Total Households | 24, 100% | 1,232,228 | 116,211,092 |
| Average Household Size | 2.50, see rank | 2.42 | 2.63 |
| 1 Person Households | 5, 20.83%, see rank | 28.77% | 27.57% |
| 2 or More Person Households | 19, 79.17%, see rank | 71.23% | 72.43% |
| Family Households (Families) | 7, 29.17%, see rank | 64.68% | 66.22% |
| Average Family Size | 4.71, see rank | 3.05 | 3.32 |
| Married-Couple Family | 7, 29.17%, see rank | 51.37% | 48.42% |
| Nonfamily Households | 17, 70.83%, see rank | 35.32% | 33.78% |
US Census 2010 data
Total population: 131
| Duncan, IA | Iowa | U.S. | |
| Total Households | 33, 100% | 1,221,576 | 116,716,292 |
| Average Household Size | 2.45, see rank | 2.41 | 2.58 |
| 1 Person Households | 11, 33.33%, see rank | 28.45% | 26.74% |
| 2 or More Person Households | 22, 66.67%, see rank | 71.55% | 73.26% |
| Family Households (Families) | 20, 60.61%, see rank | 64.67% | 66.43% |
| Average Family Size | 3.15, see rank | 2.97 | 3.14 |
| Married-Couple Family | 14, 42.42%, see rank | 51.18% | 48.42% |
| Nonfamily Households | 13, 39.39%, see rank | 35.33% | 33.57% |
ACS 2008-2012 data
Total population: 104
| Duncan, IA | Iowa | U.S. | |
| Total Households | 33, 100% | 1,223,509 | 115,226,802 |
| Average Household Size | 1.76, see rank | 2.41 | 2.61 |
| 1 Person Households | 20, 60.61%, see rank | 28.63% | 27.45% |
| 2 or More Person Households | 13, 39.39%, see rank | 71.37% | 72.55% |
| Family Households (Families) | 13, 39.39%, see rank | 65.05% | 66.47% |
| Average Family Size | 2.92, see rank | 3.03 | 3.29 |
| Married-Couple Family | 13, 39.39%, see rank | 51.96% | 48.97% |
| Nonfamily Households | 20, 60.61%, see rank | 34.95% | 33.53% |
ACS 2006-2010 data
Total population: 69
| Duncan, IA | Iowa | U.S. | |
| Total Households | 38, 100% | 1,215,954 | 114,235,996 |
| Average Household Size | 1.82, see rank | 2.40 | 2.59 |
| 1 Person Households | 19, 50.00%, see rank | 28.44% | 27.24% |
| 2 or More Person Households | 19, 50.00%, see rank | 71.56% | 72.76% |
| Family Households (Families) | 19, 50.00%, see rank | 65.29% | 66.75% |
| Average Family Size | 2.63, see rank | 3.01 | 3.25 |
| Married-Couple Family | 19, 50.00%, see rank | 52.60% | 49.60% |
| Nonfamily Households | 19, 50.00%, see rank | 34.71% | 33.25% |
* 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.