Flat Rock, IL Historical Household and Family Data
ACS 2010-2014 data
Total population: 338
| Flat Rock, IL | Illinois | U.S. | |
| Total Households | 139, 100% | 4,778,633 | 116,211,092 |
| Average Household Size | 2.43, see rank | 2.63 | 2.63 |
| 1 Person Households | 56, 40.29%, see rank | 28.68% | 27.57% |
| 2 or More Person Households | 83, 59.71%, see rank | 71.32% | 72.43% |
| Family Households (Families) | 80, 57.55%, see rank | 65.52% | 66.22% |
| Average Family Size | 3.41, see rank | 3.36 | 3.32 |
| Married-Couple Family | 63, 45.32%, see rank | 48.22% | 48.42% |
| Nonfamily Households | 59, 42.45%, see rank | 34.48% | 33.78% |
US Census 2010 data
Total population: 331
| Flat Rock, IL | Illinois | U.S. | |
| Total Households | 149, 100% | 4,836,972 | 116,716,292 |
| Average Household Size | 2.22, see rank | 2.59 | 2.58 |
| 1 Person Households | 51, 34.23%, see rank | 27.83% | 26.74% |
| 2 or More Person Households | 98, 65.77%, see rank | 72.17% | 73.26% |
| Family Households (Families) | 94, 63.09%, see rank | 65.81% | 66.43% |
| Average Family Size | 2.82, see rank | 3.20 | 3.14 |
| Married-Couple Family | 71, 47.65%, see rank | 48.23% | 48.42% |
| Nonfamily Households | 55, 36.91%, see rank | 34.19% | 33.57% |
ACS 2008-2012 data
Total population: 425
| Flat Rock, IL | Illinois | U.S. | |
| Total Households | 188, 100% | 4,774,275 | 115,226,802 |
| Average Household Size | 2.26, see rank | 2.62 | 2.61 |
| 1 Person Households | 87, 46.28%, see rank | 28.52% | 27.45% |
| 2 or More Person Households | 101, 53.72%, see rank | 71.48% | 72.55% |
| Family Households (Families) | 95, 50.53%, see rank | 65.82% | 66.47% |
| Average Family Size | 3.44, see rank | 3.34 | 3.29 |
| Married-Couple Family | 68, 36.17%, see rank | 48.67% | 48.97% |
| Nonfamily Households | 93, 49.47%, see rank | 34.18% | 33.53% |
ACS 2006-2010 data
Total population: 406
| Flat Rock, IL | Illinois | U.S. | |
| Total Households | 167, 100% | 4,769,951 | 114,235,996 |
| Average Household Size | 2.43, see rank | 2.61 | 2.59 |
| 1 Person Households | 66, 39.52%, see rank | 28.23% | 27.24% |
| 2 or More Person Households | 101, 60.48%, see rank | 71.77% | 72.76% |
| Family Households (Families) | 97, 58.08%, see rank | 66.28% | 66.75% |
| Average Family Size | 3.42, see rank | 3.31 | 3.25 |
| Married-Couple Family | 73, 43.71%, see rank | 49.36% | 49.60% |
| Nonfamily Households | 70, 41.92%, see rank | 33.72% | 33.25% |
ACS 2005-2009 data
Total population: 432
| Flat Rock, IL | Illinois | U.S. | |
| Total Households | 186, 100% | 4,749,388 | 112,611,029 |
| Average Household Size | 2.32, see rank | 2.62 | 2.60 |
| 1 Person Households | 67, 36.02%, see rank | 28.40% | 27.32% |
| 2 or More Person Households | 119, 63.98%, see rank | 71.60% | 72.68% |
| Family Households (Families) | 114, 61.29%, see rank | 66.09% | 66.67% |
| Average Family Size | 3.11, see rank | 3.34 | 3.27 |
| Married-Couple Family | 80, 43.01%, see rank | 49.35% | 49.71% |
| Nonfamily Households | 72, 38.71%, see rank | 33.91% | 33.33% |
US Census 2000 data
Total population: 415
| Flat Rock, IL | Illinois | U.S. | |
| Total Households | 166, 100% | 4,591,779 | 105,480,101 |
| Average Household Size | 2.50, see rank | 2.63 | 2.59 |
| 1 Person Households | 42, 25.30%, see rank | 26.78% | 25.82% |
| 2 or More Person Households | 124, 74.70%, see rank | 73.22% | 74.18% |
| Family Households (Families) | 118, 71.08%, see rank | 67.63% | 68.06% |
| Average Family Size | 3.02, see rank | 3.23 | 3.14 |
| Married-Couple Family | 99, 59.64%, see rank | 51.26% | 51.66% |
| Nonfamily Households | 48, 28.92%, 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.