Polk County Historical Household and Family Data
ACS 2010-2014 data
Total population: 445,136
| Polk County | Iowa | U.S. | |
| Total Households | 174,759, 100% | 1,232,228 | 116,211,092 |
| Average Household Size | 2.50, see rank | 2.42 | 2.63 |
| 1 Person Households | 48,496, 27.75%, see rank | 28.77% | 27.57% |
| 2 or More Person Households | 126,263, 72.25%, see rank | 71.23% | 72.43% |
| Family Households (Families) | 113,841, 65.14%, see rank | 64.68% | 66.22% |
| Average Family Size | 3.16, see rank | 3.05 | 3.32 |
| Married-Couple Family | 85,911, 49.16%, see rank | 51.37% | 48.42% |
| Nonfamily Households | 60,918, 34.86%, see rank | 35.32% | 33.78% |
US Census 2010 data
Total population: 430,640
| Polk County | Iowa | U.S. | |
| Total Households | 170,197, 100% | 1,221,576 | 116,716,292 |
| Average Household Size | 2.48, see rank | 2.41 | 2.58 |
| 1 Person Households | 48,127, 28.28%, see rank | 28.45% | 26.74% |
| 2 or More Person Households | 122,070, 71.72%, see rank | 71.55% | 73.26% |
| Family Households (Families) | 108,321, 63.64%, see rank | 64.67% | 66.43% |
| Average Family Size | 3.07, see rank | 2.97 | 3.14 |
| Married-Couple Family | 82,125, 48.25%, see rank | 51.18% | 48.42% |
| Nonfamily Households | 61,876, 36.36%, see rank | 35.33% | 33.57% |
ACS 2008-2012 data
Total population: 431,811
| Polk County | Iowa | U.S. | |
| Total Households | 171,227, 100% | 1,223,509 | 115,226,802 |
| Average Household Size | 2.47, see rank | 2.41 | 2.61 |
| 1 Person Households | 48,259, 28.18%, see rank | 28.63% | 27.45% |
| 2 or More Person Households | 122,968, 71.82%, see rank | 71.37% | 72.55% |
| Family Households (Families) | 111,570, 65.16%, see rank | 65.05% | 66.47% |
| Average Family Size | 3.13, see rank | 3.03 | 3.29 |
| Married-Couple Family | 85,054, 49.67%, see rank | 51.96% | 48.97% |
| Nonfamily Households | 59,657, 34.84%, see rank | 34.95% | 33.53% |
ACS 2006-2010 data
Total population: 419,301
| Polk County | Iowa | U.S. | |
| Total Households | 168,352, 100% | 1,215,954 | 114,235,996 |
| Average Household Size | 2.44, see rank | 2.40 | 2.59 |
| 1 Person Households | 48,177, 28.62%, see rank | 28.44% | 27.24% |
| 2 or More Person Households | 120,175, 71.38%, see rank | 71.56% | 72.76% |
| Family Households (Families) | 108,817, 64.64%, see rank | 65.29% | 66.75% |
| Average Family Size | 3.10, see rank | 3.01 | 3.25 |
| Married-Couple Family | 83,953, 49.87%, see rank | 52.60% | 49.60% |
| Nonfamily Households | 59,535, 35.36%, see rank | 34.71% | 33.25% |
ACS 2005-2009 data
Total population: 415,949
| Polk County | Iowa | U.S. | |
| Total Households | 170,313, 100% | 1,215,970 | 112,611,029 |
| Average Household Size | 2.39, see rank | 2.36 | 2.60 |
| 1 Person Households | 49,840, 29.26%, see rank | 28.28% | 27.32% |
| 2 or More Person Households | 120,473, 70.74%, see rank | 71.72% | 72.68% |
| Family Households (Families) | 108,796, 63.88%, see rank | 65.23% | 66.67% |
| Average Family Size | 3.05, see rank | 2.96 | 3.27 |
| Married-Couple Family | 84,697, 49.73%, see rank | 52.57% | 49.71% |
| Nonfamily Households | 61,517, 36.12%, see rank | 34.77% | 33.33% |
US Census 2000 data
Total population: 374,601
| Polk County | Iowa | U.S. | |
| Total Households | 149,112, 100% | 1,149,276 | 105,480,101 |
| Average Household Size | 2.45, see rank | 2.46 | 2.59 |
| 1 Person Households | 41,863, 28.07%, see rank | 27.24% | 25.82% |
| 2 or More Person Households | 107,249, 71.93%, see rank | 72.76% | 74.18% |
| Family Households (Families) | 96,601, 64.78%, see rank | 66.97% | 68.06% |
| Average Family Size | 3.04, see rank | 3.00 | 3.14 |
| Married-Couple Family | 76,055, 51.01%, see rank | 55.10% | 51.66% |
| Nonfamily Households | 52,511, 35.22%, see rank | 33.03% | 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.