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Round Lake, IL Historical Household and Family Data
ACS 2010-2014 data
Total population: 18,399
| Round Lake, IL | Illinois | U.S. | |
| Total Households | 5,761, 100% | 4,778,633 | 116,211,092 |
| Average Household Size | 3.19, see rank | 2.63 | 2.63 |
| 1 Person Households | 1,091, 18.94%, see rank | 28.68% | 27.57% |
| 2 or More Person Households | 4,670, 81.06%, see rank | 71.32% | 72.43% |
| Family Households (Families) | 4,464, 77.49%, see rank | 65.52% | 66.22% |
| Average Family Size | 3.76, see rank | 3.36 | 3.32 |
| Married-Couple Family | 3,737, 64.87%, see rank | 48.22% | 48.42% |
| Nonfamily Households | 1,297, 22.51%, see rank | 34.48% | 33.78% |
US Census 2010 data
Total population: 18,289
| Round Lake, IL | Illinois | U.S. | |
| Total Households | 5,847, 100% | 4,836,972 | 116,716,292 |
| Average Household Size | 3.13, see rank | 2.59 | 2.58 |
| 1 Person Households | 939, 16.06%, see rank | 27.83% | 26.74% |
| 2 or More Person Households | 4,908, 83.94%, see rank | 72.17% | 73.26% |
| Family Households (Families) | 4,587, 78.45%, see rank | 65.81% | 66.43% |
| Average Family Size | 3.55, see rank | 3.20 | 3.14 |
| Married-Couple Family | 3,732, 63.83%, see rank | 48.23% | 48.42% |
| Nonfamily Households | 1,260, 21.55%, see rank | 34.19% | 33.57% |
ACS 2008-2012 data
Total population: 17,773
| Round Lake, IL | Illinois | U.S. | |
| Total Households | 5,723, 100% | 4,774,275 | 115,226,802 |
| Average Household Size | 3.10, see rank | 2.62 | 2.61 |
| 1 Person Households | 1,098, 19.19%, see rank | 28.52% | 27.45% |
| 2 or More Person Households | 4,625, 80.81%, see rank | 71.48% | 72.55% |
| Family Households (Families) | 4,376, 76.46%, see rank | 65.82% | 66.47% |
| Average Family Size | 3.67, see rank | 3.34 | 3.29 |
| Married-Couple Family | 3,528, 61.65%, see rank | 48.67% | 48.97% |
| Nonfamily Households | 1,347, 23.54%, see rank | 34.18% | 33.53% |
ACS 2006-2010 data
Total population: 16,163
| Round Lake, IL | Illinois | U.S. | |
| Total Households | 5,246, 100% | 4,769,951 | 114,235,996 |
| Average Household Size | 3.08, see rank | 2.61 | 2.59 |
| 1 Person Households | 841, 16.03%, see rank | 28.23% | 27.24% |
| 2 or More Person Households | 4,405, 83.97%, see rank | 71.77% | 72.76% |
| Family Households (Families) | 4,115, 78.44%, see rank | 66.28% | 66.75% |
| Average Family Size | 3.54, see rank | 3.31 | 3.25 |
| Married-Couple Family | 3,273, 62.39%, see rank | 49.36% | 49.60% |
| Nonfamily Households | 1,131, 21.56%, see rank | 33.72% | 33.25% |
ACS 2005-2009 data
Total population: 18,625
| Round Lake, IL | Illinois | U.S. | |
| Total Households | 5,990, 100% | 4,749,388 | 112,611,029 |
| Average Household Size | 3.11, see rank | 2.62 | 2.60 |
| 1 Person Households | 1,013, 16.91%, see rank | 28.40% | 27.32% |
| 2 or More Person Households | 4,977, 83.09%, see rank | 71.60% | 72.68% |
| Family Households (Families) | 4,707, 78.58%, see rank | 66.09% | 66.67% |
| Average Family Size | 3.61, see rank | 3.34 | 3.27 |
| Married-Couple Family | 3,694, 61.67%, see rank | 49.35% | 49.71% |
| Nonfamily Households | 1,283, 21.42%, see rank | 33.91% | 33.33% |
US Census 2000 data
Total population: 5,842
| Round Lake, IL | Illinois | U.S. | |
| Total Households | 2,029, 100% | 4,591,779 | 105,480,101 |
| Average Household Size | 2.88, see rank | 2.63 | 2.59 |
| 1 Person Households | 380, 18.73%, see rank | 26.78% | 25.82% |
| 2 or More Person Households | 1,649, 81.27%, see rank | 73.22% | 74.18% |
| Family Households (Families) | 1,539, 75.85%, see rank | 67.63% | 68.06% |
| Average Family Size | 3.28, see rank | 3.23 | 3.14 |
| Married-Couple Family | 1,172, 57.76%, see rank | 51.26% | 51.66% |
| Nonfamily Households | 490, 24.15%, 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.