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Decatur, IL Historical Household and Family Data
ACS 2010-2014 data
Total population: 75,088
| Decatur, IL | Illinois | U.S. | |
| Total Households | 31,481, 100% | 4,778,633 | 116,211,092 |
| Average Household Size | 2.28, see rank | 2.63 | 2.63 |
| 1 Person Households | 11,779, 37.42%, see rank | 28.68% | 27.57% |
| 2 or More Person Households | 19,702, 62.58%, see rank | 71.32% | 72.43% |
| Family Households (Families) | 17,733, 56.33%, see rank | 65.52% | 66.22% |
| Average Family Size | 3.10, see rank | 3.36 | 3.32 |
| Married-Couple Family | 11,880, 37.74%, see rank | 48.22% | 48.42% |
| Nonfamily Households | 13,748, 43.67%, see rank | 34.48% | 33.78% |
US Census 2010 data
Total population: 76,122
| Decatur, IL | Illinois | U.S. | |
| Total Households | 32,344, 100% | 4,836,972 | 116,716,292 |
| Average Household Size | 2.23, see rank | 2.59 | 2.58 |
| 1 Person Households | 11,400, 35.25%, see rank | 27.83% | 26.74% |
| 2 or More Person Households | 20,944, 64.75%, see rank | 72.17% | 73.26% |
| Family Households (Families) | 18,991, 58.72%, see rank | 65.81% | 66.43% |
| Average Family Size | 2.86, see rank | 3.20 | 3.14 |
| Married-Couple Family | 12,092, 37.39%, see rank | 48.23% | 48.42% |
| Nonfamily Households | 13,353, 41.28%, see rank | 34.19% | 33.57% |
ACS 2008-2012 data
Total population: 76,091
| Decatur, IL | Illinois | U.S. | |
| Total Households | 31,526, 100% | 4,774,275 | 115,226,802 |
| Average Household Size | 2.31, see rank | 2.62 | 2.61 |
| 1 Person Households | 12,010, 38.10%, see rank | 28.52% | 27.45% |
| 2 or More Person Households | 19,516, 61.90%, see rank | 71.48% | 72.55% |
| Family Households (Families) | 17,818, 56.52%, see rank | 65.82% | 66.47% |
| Average Family Size | 3.17, see rank | 3.34 | 3.29 |
| Married-Couple Family | 12,038, 38.18%, see rank | 48.67% | 48.97% |
| Nonfamily Households | 13,708, 43.48%, see rank | 34.18% | 33.53% |
ACS 2006-2010 data
Total population: 76,429
| Decatur, IL | Illinois | U.S. | |
| Total Households | 31,762, 100% | 4,769,951 | 114,235,996 |
| Average Household Size | 2.30, see rank | 2.61 | 2.59 |
| 1 Person Households | 11,818, 37.21%, see rank | 28.23% | 27.24% |
| 2 or More Person Households | 19,944, 62.79%, see rank | 71.77% | 72.76% |
| Family Households (Families) | 18,388, 57.89%, see rank | 66.28% | 66.75% |
| Average Family Size | 3.13, see rank | 3.31 | 3.25 |
| Married-Couple Family | 12,909, 40.64%, see rank | 49.36% | 49.60% |
| Nonfamily Households | 13,374, 42.11%, see rank | 33.72% | 33.25% |
ACS 2005-2009 data
Total population: 75,867
| Decatur, IL | Illinois | U.S. | |
| Total Households | 33,248, 100% | 4,749,388 | 112,611,029 |
| Average Household Size | 2.17, see rank | 2.62 | 2.60 |
| 1 Person Households | 12,169, 36.60%, see rank | 28.40% | 27.32% |
| 2 or More Person Households | 21,079, 63.40%, see rank | 71.60% | 72.68% |
| Family Households (Families) | 19,381, 58.29%, see rank | 66.09% | 66.67% |
| Average Family Size | 2.91, see rank | 3.34 | 3.27 |
| Married-Couple Family | 13,550, 40.75%, see rank | 49.35% | 49.71% |
| Nonfamily Households | 13,867, 41.71%, see rank | 33.91% | 33.33% |
US Census 2000 data
Total population: 81,860
| Decatur, IL | Illinois | U.S. | |
| Total Households | 34,086, 100% | 4,591,779 | 105,480,101 |
| Average Household Size | 2.30, see rank | 2.63 | 2.59 |
| 1 Person Households | 11,137, 32.67%, see rank | 26.78% | 25.82% |
| 2 or More Person Households | 22,949, 67.33%, see rank | 73.22% | 74.18% |
| Family Households (Families) | 21,088, 61.87%, see rank | 67.63% | 68.06% |
| Average Family Size | 2.90, see rank | 3.23 | 3.14 |
| Married-Couple Family | 15,021, 44.07%, see rank | 51.26% | 51.66% |
| Nonfamily Households | 12,998, 38.13%, 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.