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Firth, ID Historical Household and Family Data
ACS 2010-2014 data
Total population: 540
| Firth, ID | Idaho | U.S. | |
| Total Households | 182, 100% | 585,259 | 116,211,092 |
| Average Household Size | 2.97, see rank | 2.68 | 2.63 |
| 1 Person Households | 45, 24.73%, see rank | 24.37% | 27.57% |
| 2 or More Person Households | 137, 75.27%, see rank | 75.63% | 72.43% |
| Family Households (Families) | 134, 73.63%, see rank | 69.49% | 66.22% |
| Average Family Size | 3.65, see rank | 3.29 | 3.32 |
| Married-Couple Family | 116, 63.74%, see rank | 55.52% | 48.42% |
| Nonfamily Households | 48, 26.37%, see rank | 30.51% | 33.78% |
US Census 2010 data
Total population: 477
| Firth, ID | Idaho | U.S. | |
| Total Households | 168, 100% | 579,408 | 116,716,292 |
| Average Household Size | 2.84, see rank | 2.66 | 2.58 |
| 1 Person Households | 44, 26.19%, see rank | 23.78% | 26.74% |
| 2 or More Person Households | 124, 73.81%, see rank | 76.22% | 73.26% |
| Family Households (Families) | 121, 72.02%, see rank | 69.58% | 66.43% |
| Average Family Size | 3.45, see rank | 3.16 | 3.14 |
| Married-Couple Family | 96, 57.14%, see rank | 55.30% | 48.42% |
| Nonfamily Households | 47, 27.98%, see rank | 30.42% | 33.57% |
ACS 2008-2012 data
Total population: 636
| Firth, ID | Idaho | U.S. | |
| Total Households | 200, 100% | 577,648 | 115,226,802 |
| Average Household Size | 3.18, see rank | 2.66 | 2.61 |
| 1 Person Households | 28, 14.00%, see rank | 23.81% | 27.45% |
| 2 or More Person Households | 172, 86.00%, see rank | 76.19% | 72.55% |
| Family Households (Families) | 170, 85.00%, see rank | 69.95% | 66.47% |
| Average Family Size | 3.55, see rank | 3.24 | 3.29 |
| Married-Couple Family | 149, 74.50%, see rank | 56.14% | 48.97% |
| Nonfamily Households | 30, 15.00%, see rank | 30.05% | 33.53% |
ACS 2006-2010 data
Total population: 544
| Firth, ID | Idaho | U.S. | |
| Total Households | 194, 100% | 570,283 | 114,235,996 |
| Average Household Size | 2.80, see rank | 2.63 | 2.59 |
| 1 Person Households | 54, 27.84%, see rank | 23.64% | 27.24% |
| 2 or More Person Households | 140, 72.16%, see rank | 76.36% | 72.76% |
| Family Households (Families) | 140, 72.16%, see rank | 70.11% | 66.75% |
| Average Family Size | 3.50, see rank | 3.19 | 3.25 |
| Married-Couple Family | 112, 57.73%, see rank | 56.85% | 49.60% |
| Nonfamily Households | 54, 27.84%, see rank | 29.89% | 33.25% |
ACS 2005-2009 data
Total population: 479
| Firth, ID | Idaho | U.S. | |
| Total Households | 186, 100% | 552,726 | 112,611,029 |
| Average Household Size | 2.58, see rank | 2.64 | 2.60 |
| 1 Person Households | 53, 28.49%, see rank | 23.42% | 27.32% |
| 2 or More Person Households | 133, 71.51%, see rank | 76.58% | 72.68% |
| Family Households (Families) | 133, 71.51%, see rank | 70.28% | 66.67% |
| Average Family Size | 3.20, see rank | 3.20 | 3.27 |
| Married-Couple Family | 94, 50.54%, see rank | 57.01% | 49.71% |
| Nonfamily Households | 53, 28.49%, see rank | 29.72% | 33.33% |
US Census 2000 data
Total population: 408
| Firth, ID | Idaho | U.S. | |
| Total Households | 142, 100% | 469,645 | 105,480,101 |
| Average Household Size | 2.87, see rank | 2.69 | 2.59 |
| 1 Person Households | 38, 26.76%, see rank | 22.39% | 25.82% |
| 2 or More Person Households | 104, 73.24%, see rank | 77.61% | 74.18% |
| Family Households (Families) | 101, 71.13%, see rank | 71.46% | 68.06% |
| Average Family Size | 3.48, see rank | 3.17 | 3.14 |
| Married-Couple Family | 85, 59.86%, see rank | 58.88% | 51.66% |
| Nonfamily Households | 41, 28.87%, see rank | 28.54% | 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.