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Rock City, IL Historical Household and Family Data
ACS 2010-2014 data
Total population: 333
| Rock City, IL | Illinois | U.S. | |
| Total Households | 124, 100% | 4,778,633 | 116,211,092 |
| Average Household Size | 2.69, see rank | 2.63 | 2.63 |
| 1 Person Households | 28, 22.58%, see rank | 28.68% | 27.57% |
| 2 or More Person Households | 96, 77.42%, see rank | 71.32% | 72.43% |
| Family Households (Families) | 92, 74.19%, see rank | 65.52% | 66.22% |
| Average Family Size | 3.21, see rank | 3.36 | 3.32 |
| Married-Couple Family | 73, 58.87%, see rank | 48.22% | 48.42% |
| Nonfamily Households | 32, 25.81%, see rank | 34.48% | 33.78% |
US Census 2010 data
Total population: 315
| Rock City, IL | Illinois | U.S. | |
| Total Households | 123, 100% | 4,836,972 | 116,716,292 |
| Average Household Size | 2.56, see rank | 2.59 | 2.58 |
| 1 Person Households | 30, 24.39%, see rank | 27.83% | 26.74% |
| 2 or More Person Households | 93, 75.61%, see rank | 72.17% | 73.26% |
| Family Households (Families) | 90, 73.17%, see rank | 65.81% | 66.43% |
| Average Family Size | 3.06, see rank | 3.20 | 3.14 |
| Married-Couple Family | 74, 60.16%, see rank | 48.23% | 48.42% |
| Nonfamily Households | 33, 26.83%, see rank | 34.19% | 33.57% |
ACS 2008-2012 data
Total population: 316
| Rock City, IL | Illinois | U.S. | |
| Total Households | 131, 100% | 4,774,275 | 115,226,802 |
| Average Household Size | 2.41, see rank | 2.62 | 2.61 |
| 1 Person Households | 37, 28.24%, see rank | 28.52% | 27.45% |
| 2 or More Person Households | 94, 71.76%, see rank | 71.48% | 72.55% |
| Family Households (Families) | 87, 66.41%, see rank | 65.82% | 66.47% |
| Average Family Size | 2.99, see rank | 3.34 | 3.29 |
| Married-Couple Family | 78, 59.54%, see rank | 48.67% | 48.97% |
| Nonfamily Households | 44, 33.59%, see rank | 34.18% | 33.53% |
ACS 2006-2010 data
Total population: 387
| Rock City, IL | Illinois | U.S. | |
| Total Households | 146, 100% | 4,769,951 | 114,235,996 |
| Average Household Size | 2.65, see rank | 2.61 | 2.59 |
| 1 Person Households | 51, 34.93%, see rank | 28.23% | 27.24% |
| 2 or More Person Households | 95, 65.07%, see rank | 71.77% | 72.76% |
| Family Households (Families) | 92, 63.01%, see rank | 66.28% | 66.75% |
| Average Family Size | 3.55, see rank | 3.31 | 3.25 |
| Married-Couple Family | 84, 57.53%, see rank | 49.36% | 49.60% |
| Nonfamily Households | 54, 36.99%, see rank | 33.72% | 33.25% |
ACS 2005-2009 data
Total population: 411
| Rock City, IL | Illinois | U.S. | |
| Total Households | 145, 100% | 4,749,388 | 112,611,029 |
| Average Household Size | 2.83, see rank | 2.62 | 2.60 |
| 1 Person Households | 36, 24.83%, see rank | 28.40% | 27.32% |
| 2 or More Person Households | 109, 75.17%, see rank | 71.60% | 72.68% |
| Family Households (Families) | 103, 71.03%, see rank | 66.09% | 66.67% |
| Average Family Size | 3.49, see rank | 3.34 | 3.27 |
| Married-Couple Family | 92, 63.45%, see rank | 49.35% | 49.71% |
| Nonfamily Households | 42, 28.97%, see rank | 33.91% | 33.33% |
US Census 2000 data
Total population: 313
| Rock City, IL | Illinois | U.S. | |
| Total Households | 120, 100% | 4,591,779 | 105,480,101 |
| Average Household Size | 2.61, see rank | 2.63 | 2.59 |
| 1 Person Households | 34, 28.33%, see rank | 26.78% | 25.82% |
| 2 or More Person Households | 86, 71.67%, see rank | 73.22% | 74.18% |
| Family Households (Families) | 82, 68.33%, see rank | 67.63% | 68.06% |
| Average Family Size | 3.24, see rank | 3.23 | 3.14 |
| Married-Couple Family | 67, 55.83%, see rank | 51.26% | 51.66% |
| Nonfamily Households | 38, 31.67%, 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.