Marion County Historical Household and Family Data
ACS 2010-2014 data
Total population: 38,922
| Marion County | Illinois | U.S. | |
| Total Households | 15,835, 100% | 4,778,633 | 116,211,092 |
| Average Household Size | 2.41, see rank | 2.63 | 2.63 |
| 1 Person Households | 4,659, 29.42%, see rank | 28.68% | 27.57% |
| 2 or More Person Households | 11,176, 70.58%, see rank | 71.32% | 72.43% |
| Family Households (Families) | 10,399, 65.67%, see rank | 65.52% | 66.22% |
| Average Family Size | 3.03, see rank | 3.36 | 3.32 |
| Married-Couple Family | 7,443, 47.00%, see rank | 48.22% | 48.42% |
| Nonfamily Households | 5,436, 34.33%, see rank | 34.48% | 33.78% |
US Census 2010 data
Total population: 39,437
| Marion County | Illinois | U.S. | |
| Total Households | 16,148, 100% | 4,836,972 | 116,716,292 |
| Average Household Size | 2.40, see rank | 2.59 | 2.58 |
| 1 Person Households | 4,650, 28.80%, see rank | 27.83% | 26.74% |
| 2 or More Person Households | 11,498, 71.20%, see rank | 72.17% | 73.26% |
| Family Households (Families) | 10,746, 66.55%, see rank | 65.81% | 66.43% |
| Average Family Size | 2.91, see rank | 3.20 | 3.14 |
| Married-Couple Family | 7,899, 48.92%, see rank | 48.23% | 48.42% |
| Nonfamily Households | 5,402, 33.45%, see rank | 34.19% | 33.57% |
ACS 2008-2012 data
Total population: 39,319
| Marion County | Illinois | U.S. | |
| Total Households | 15,958, 100% | 4,774,275 | 115,226,802 |
| Average Household Size | 2.42, see rank | 2.62 | 2.61 |
| 1 Person Households | 4,666, 29.24%, see rank | 28.52% | 27.45% |
| 2 or More Person Households | 11,292, 70.76%, see rank | 71.48% | 72.55% |
| Family Households (Families) | 10,596, 66.40%, see rank | 65.82% | 66.47% |
| Average Family Size | 3.05, see rank | 3.34 | 3.29 |
| Married-Couple Family | 7,785, 48.78%, see rank | 48.67% | 48.97% |
| Nonfamily Households | 5,362, 33.60%, see rank | 34.18% | 33.53% |
ACS 2006-2010 data
Total population: 39,722
| Marion County | Illinois | U.S. | |
| Total Households | 16,148, 100% | 4,769,951 | 114,235,996 |
| Average Household Size | 2.43, see rank | 2.61 | 2.59 |
| 1 Person Households | 4,600, 28.49%, see rank | 28.23% | 27.24% |
| 2 or More Person Households | 11,548, 71.51%, see rank | 71.77% | 72.76% |
| Family Households (Families) | 10,952, 67.82%, see rank | 66.28% | 66.75% |
| Average Family Size | 3.04, see rank | 3.31 | 3.25 |
| Married-Couple Family | 8,149, 50.46%, see rank | 49.36% | 49.60% |
| Nonfamily Households | 5,196, 32.18%, see rank | 33.72% | 33.25% |
ACS 2005-2009 data
Total population: 39,488
| Marion County | Illinois | U.S. | |
| Total Households | 16,436, 100% | 4,749,388 | 112,611,029 |
| Average Household Size | 2.36, see rank | 2.62 | 2.60 |
| 1 Person Households | 4,628, 28.16%, see rank | 28.40% | 27.32% |
| 2 or More Person Households | 11,808, 71.84%, see rank | 71.60% | 72.68% |
| Family Households (Families) | 11,135, 67.75%, see rank | 66.09% | 66.67% |
| Average Family Size | 2.94, see rank | 3.34 | 3.27 |
| Married-Couple Family | 8,213, 49.97%, see rank | 49.35% | 49.71% |
| Nonfamily Households | 5,301, 32.25%, see rank | 33.91% | 33.33% |
US Census 2000 data
Total population: 41,691
| Marion County | Illinois | U.S. | |
| Total Households | 16,619, 100% | 4,591,779 | 105,480,101 |
| Average Household Size | 2.45, see rank | 2.63 | 2.59 |
| 1 Person Households | 4,513, 27.16%, see rank | 26.78% | 25.82% |
| 2 or More Person Households | 12,106, 72.84%, see rank | 73.22% | 74.18% |
| Family Households (Families) | 11,487, 69.12%, see rank | 67.63% | 68.06% |
| Average Family Size | 2.97, see rank | 3.23 | 3.14 |
| Married-Couple Family | 8,852, 53.26%, see rank | 51.26% | 51.66% |
| Nonfamily Households | 5,132, 30.88%, see rank | 32.37% | 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.