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Northfield, IL Historical Household and Family Data
ACS 2010-2014 data
Total population: 5,332
| Northfield, IL | Illinois | U.S. | |
| Total Households | 2,072, 100% | 4,778,633 | 116,211,092 |
| Average Household Size | 2.55, see rank | 2.63 | 2.63 |
| 1 Person Households | 550, 26.54%, see rank | 28.68% | 27.57% |
| 2 or More Person Households | 1,522, 73.46%, see rank | 71.32% | 72.43% |
| Family Households (Families) | 1,506, 72.68%, see rank | 65.52% | 66.22% |
| Average Family Size | 3.13, see rank | 3.36 | 3.32 |
| Married-Couple Family | 1,238, 59.75%, see rank | 48.22% | 48.42% |
| Nonfamily Households | 566, 27.32%, see rank | 34.48% | 33.78% |
US Census 2010 data
Total population: 5,420
| Northfield, IL | Illinois | U.S. | |
| Total Households | 2,190, 100% | 4,836,972 | 116,716,292 |
| Average Household Size | 2.47, see rank | 2.59 | 2.58 |
| 1 Person Households | 611, 27.90%, see rank | 27.83% | 26.74% |
| 2 or More Person Households | 1,579, 72.10%, see rank | 72.17% | 73.26% |
| Family Households (Families) | 1,538, 70.23%, see rank | 65.81% | 66.43% |
| Average Family Size | 3.04, see rank | 3.20 | 3.14 |
| Married-Couple Family | 1,321, 60.32%, see rank | 48.23% | 48.42% |
| Nonfamily Households | 652, 29.77%, see rank | 34.19% | 33.57% |
ACS 2008-2012 data
Total population: 5,234
| Northfield, IL | Illinois | U.S. | |
| Total Households | 2,078, 100% | 4,774,275 | 115,226,802 |
| Average Household Size | 2.51, see rank | 2.62 | 2.61 |
| 1 Person Households | 520, 25.02%, see rank | 28.52% | 27.45% |
| 2 or More Person Households | 1,558, 74.98%, see rank | 71.48% | 72.55% |
| Family Households (Families) | 1,529, 73.58%, see rank | 65.82% | 66.47% |
| Average Family Size | 3.03, see rank | 3.34 | 3.29 |
| Married-Couple Family | 1,423, 68.48%, see rank | 48.67% | 48.97% |
| Nonfamily Households | 549, 26.42%, see rank | 34.18% | 33.53% |
ACS 2006-2010 data
Total population: 5,429
| Northfield, IL | Illinois | U.S. | |
| Total Households | 2,044, 100% | 4,769,951 | 114,235,996 |
| Average Household Size | 2.66, see rank | 2.61 | 2.59 |
| 1 Person Households | 568, 27.79%, see rank | 28.23% | 27.24% |
| 2 or More Person Households | 1,476, 72.21%, see rank | 71.77% | 72.76% |
| Family Households (Families) | 1,454, 71.14%, see rank | 66.28% | 66.75% |
| Average Family Size | 3.31, see rank | 3.31 | 3.25 |
| Married-Couple Family | 1,315, 64.33%, see rank | 49.36% | 49.60% |
| Nonfamily Households | 590, 28.86%, see rank | 33.72% | 33.25% |
ACS 2005-2009 data
Total population: 5,441
| Northfield, IL | Illinois | U.S. | |
| Total Households | 2,032, 100% | 4,749,388 | 112,611,029 |
| Average Household Size | 2.68, see rank | 2.62 | 2.60 |
| 1 Person Households | 575, 28.30%, see rank | 28.40% | 27.32% |
| 2 or More Person Households | 1,457, 71.70%, see rank | 71.60% | 72.68% |
| Family Households (Families) | 1,438, 70.77%, see rank | 66.09% | 66.67% |
| Average Family Size | 3.36, see rank | 3.34 | 3.27 |
| Married-Couple Family | 1,318, 64.86%, see rank | 49.35% | 49.71% |
| Nonfamily Households | 594, 29.23%, see rank | 33.91% | 33.33% |
US Census 2000 data
Total population: 5,389
| Northfield, IL | Illinois | U.S. | |
| Total Households | 2,155, 100% | 4,591,779 | 105,480,101 |
| Average Household Size | 2.50, see rank | 2.63 | 2.59 |
| 1 Person Households | 563, 26.13%, see rank | 26.78% | 25.82% |
| 2 or More Person Households | 1,592, 73.87%, see rank | 73.22% | 74.18% |
| Family Households (Families) | 1,533, 71.14%, see rank | 67.63% | 68.06% |
| Average Family Size | 3.04, see rank | 3.23 | 3.14 |
| Married-Couple Family | 1,353, 62.78%, see rank | 51.26% | 51.66% |
| Nonfamily Households | 622, 28.86%, 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.