Lake County Historical Household and Family Data
ACS 2010-2014 data
Total population: 703,170
| Lake County | Illinois | U.S. | |
| Total Households | 241,846, 100% | 4,778,633 | 116,211,092 |
| Average Household Size | 2.83, see rank | 2.63 | 2.63 |
| 1 Person Households | 52,964, 21.90%, see rank | 28.68% | 27.57% |
| 2 or More Person Households | 188,882, 78.10%, see rank | 71.32% | 72.43% |
| Family Households (Families) | 179,476, 74.21%, see rank | 65.52% | 66.22% |
| Average Family Size | 3.40, see rank | 3.36 | 3.32 |
| Married-Couple Family | 143,572, 59.37%, see rank | 48.22% | 48.42% |
| Nonfamily Households | 62,370, 25.79%, see rank | 34.48% | 33.78% |
US Census 2010 data
Total population: 703,462
| Lake County | Illinois | U.S. | |
| Total Households | 241,712, 100% | 4,836,972 | 116,716,292 |
| Average Household Size | 2.82, see rank | 2.59 | 2.58 |
| 1 Person Households | 51,910, 21.48%, see rank | 27.83% | 26.74% |
| 2 or More Person Households | 189,802, 78.52%, see rank | 72.17% | 73.26% |
| Family Households (Families) | 179,428, 74.23%, see rank | 65.81% | 66.43% |
| Average Family Size | 3.31, see rank | 3.20 | 3.14 |
| Married-Couple Family | 144,065, 59.60%, see rank | 48.23% | 48.42% |
| Nonfamily Households | 62,284, 25.77%, see rank | 34.19% | 33.57% |
ACS 2008-2012 data
Total population: 701,282
| Lake County | Illinois | U.S. | |
| Total Households | 240,744, 100% | 4,774,275 | 115,226,802 |
| Average Household Size | 2.84, see rank | 2.62 | 2.61 |
| 1 Person Households | 52,136, 21.66%, see rank | 28.52% | 27.45% |
| 2 or More Person Households | 188,608, 78.34%, see rank | 71.48% | 72.55% |
| Family Households (Families) | 179,208, 74.44%, see rank | 65.82% | 66.47% |
| Average Family Size | 3.40, see rank | 3.34 | 3.29 |
| Married-Couple Family | 144,031, 59.83%, see rank | 48.67% | 48.97% |
| Nonfamily Households | 61,536, 25.56%, see rank | 34.18% | 33.53% |
ACS 2006-2010 data
Total population: 697,179
| Lake County | Illinois | U.S. | |
| Total Households | 239,246, 100% | 4,769,951 | 114,235,996 |
| Average Household Size | 2.84, see rank | 2.61 | 2.59 |
| 1 Person Households | 51,295, 21.44%, see rank | 28.23% | 27.24% |
| 2 or More Person Households | 187,951, 78.56%, see rank | 71.77% | 72.76% |
| Family Households (Families) | 178,072, 74.43%, see rank | 66.28% | 66.75% |
| Average Family Size | 3.40, see rank | 3.31 | 3.25 |
| Married-Couple Family | 144,591, 60.44%, see rank | 49.36% | 49.60% |
| Nonfamily Households | 61,174, 25.57%, see rank | 33.72% | 33.25% |
ACS 2005-2009 data
Total population: 702,558
| Lake County | Illinois | U.S. | |
| Total Households | 234,840, 100% | 4,749,388 | 112,611,029 |
| Average Household Size | 2.92, see rank | 2.62 | 2.60 |
| 1 Person Households | 51,398, 21.89%, see rank | 28.40% | 27.32% |
| 2 or More Person Households | 183,442, 78.11%, see rank | 71.60% | 72.68% |
| Family Households (Families) | 174,237, 74.19%, see rank | 66.09% | 66.67% |
| Average Family Size | 3.52, see rank | 3.34 | 3.27 |
| Married-Couple Family | 142,334, 60.61%, see rank | 49.35% | 49.71% |
| Nonfamily Households | 60,603, 25.81%, see rank | 33.91% | 33.33% |
US Census 2000 data
Total population: 644,356
| Lake County | Illinois | U.S. | |
| Total Households | 216,297, 100% | 4,591,779 | 105,480,101 |
| Average Household Size | 2.88, see rank | 2.63 | 2.59 |
| 1 Person Households | 42,662, 19.72%, see rank | 26.78% | 25.82% |
| 2 or More Person Households | 173,635, 80.28%, see rank | 73.22% | 74.18% |
| Family Households (Families) | 163,978, 75.81%, see rank | 67.63% | 68.06% |
| Average Family Size | 3.33, see rank | 3.23 | 3.14 |
| Married-Couple Family | 136,686, 63.19%, see rank | 51.26% | 51.66% |
| Nonfamily Households | 52,319, 24.19%, 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.