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Quincy, IL Historical Household and Family Data
ACS 2010-2014 data
Total population: 40,782
| Quincy, IL | Illinois | U.S. | |
| Total Households | 16,810, 100% | 4,778,633 | 116,211,092 |
| Average Household Size | 2.35, see rank | 2.63 | 2.63 |
| 1 Person Households | 5,961, 35.46%, see rank | 28.68% | 27.57% |
| 2 or More Person Households | 10,849, 64.54%, see rank | 71.32% | 72.43% |
| Family Households (Families) | 9,957, 59.23%, see rank | 65.52% | 66.22% |
| Average Family Size | 3.14, see rank | 3.36 | 3.32 |
| Married-Couple Family | 7,175, 42.68%, see rank | 48.22% | 48.42% |
| Nonfamily Households | 6,853, 40.77%, see rank | 34.48% | 33.78% |
US Census 2010 data
Total population: 40,633
| Quincy, IL | Illinois | U.S. | |
| Total Households | 17,151, 100% | 4,836,972 | 116,716,292 |
| Average Household Size | 2.25, see rank | 2.59 | 2.58 |
| 1 Person Households | 6,113, 35.64%, see rank | 27.83% | 26.74% |
| 2 or More Person Households | 11,038, 64.36%, see rank | 72.17% | 73.26% |
| Family Households (Families) | 9,964, 58.10%, see rank | 65.81% | 66.43% |
| Average Family Size | 2.92, see rank | 3.20 | 3.14 |
| Married-Couple Family | 7,113, 41.47%, see rank | 48.23% | 48.42% |
| Nonfamily Households | 7,187, 41.90%, see rank | 34.19% | 33.57% |
ACS 2008-2012 data
Total population: 40,647
| Quincy, IL | Illinois | U.S. | |
| Total Households | 16,632, 100% | 4,774,275 | 115,226,802 |
| Average Household Size | 2.35, see rank | 2.62 | 2.61 |
| 1 Person Households | 5,647, 33.95%, see rank | 28.52% | 27.45% |
| 2 or More Person Households | 10,985, 66.05%, see rank | 71.48% | 72.55% |
| Family Households (Families) | 9,971, 59.95%, see rank | 65.82% | 66.47% |
| Average Family Size | 3.10, see rank | 3.34 | 3.29 |
| Married-Couple Family | 7,380, 44.37%, see rank | 48.67% | 48.97% |
| Nonfamily Households | 6,661, 40.05%, see rank | 34.18% | 33.53% |
ACS 2006-2010 data
Total population: 40,496
| Quincy, IL | Illinois | U.S. | |
| Total Households | 16,938, 100% | 4,769,951 | 114,235,996 |
| Average Household Size | 2.28, see rank | 2.61 | 2.59 |
| 1 Person Households | 5,763, 34.02%, see rank | 28.23% | 27.24% |
| 2 or More Person Households | 11,175, 65.98%, see rank | 71.77% | 72.76% |
| Family Households (Families) | 10,150, 59.92%, see rank | 66.28% | 66.75% |
| Average Family Size | 3.00, see rank | 3.31 | 3.25 |
| Married-Couple Family | 7,323, 43.23%, see rank | 49.36% | 49.60% |
| Nonfamily Households | 6,788, 40.08%, see rank | 33.72% | 33.25% |
ACS 2005-2009 data
Total population: 39,873
| Quincy, IL | Illinois | U.S. | |
| Total Households | 17,032, 100% | 4,749,388 | 112,611,029 |
| Average Household Size | 2.20, see rank | 2.62 | 2.60 |
| 1 Person Households | 5,808, 34.10%, see rank | 28.40% | 27.32% |
| 2 or More Person Households | 11,224, 65.90%, see rank | 71.60% | 72.68% |
| Family Households (Families) | 10,189, 59.82%, see rank | 66.09% | 66.67% |
| Average Family Size | 2.90, see rank | 3.34 | 3.27 |
| Married-Couple Family | 7,474, 43.88%, see rank | 49.35% | 49.71% |
| Nonfamily Households | 6,843, 40.18%, see rank | 33.91% | 33.33% |
US Census 2000 data
Total population: 40,366
| Quincy, IL | Illinois | U.S. | |
| Total Households | 16,546, 100% | 4,591,779 | 105,480,101 |
| Average Household Size | 2.30, see rank | 2.63 | 2.59 |
| 1 Person Households | 5,582, 33.74%, see rank | 26.78% | 25.82% |
| 2 or More Person Households | 10,964, 66.26%, see rank | 73.22% | 74.18% |
| Family Households (Families) | 10,106, 61.08%, see rank | 67.63% | 68.06% |
| Average Family Size | 2.94, see rank | 3.23 | 3.14 |
| Married-Couple Family | 7,658, 46.28%, see rank | 51.26% | 51.66% |
| Nonfamily Households | 6,440, 38.92%, 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.