Franklin County's estimated 2026 population is 15,882 with a growth rate of 0.77% in the past year according to the most recent United States census data. Franklin County is the 22nd largest county in Idaho. The 2010 population was 12,782 and has seen a growth of 24.25% since that time.
Data after 2023 is projected based on recent change
The racial composition of Franklin County includes 91.87% White, 3.03% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander, Asian and multiracial populations.
White (91.87%)
Two or more races (4.34%)
Other race (3.03%)
Native American (0.63%)
Native Hawaiian or Pacific Islander (0.12%)
Asian (0.03%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 13,518 | 91.87% |
| Two or more races | 638 | 4.34% |
| Other race | 446 | 3.03% |
| Native American | 92 | 0.63% |
| Native Hawaiian or Pacific Islander | 17 | 0.12% |
| Asian | 4 | 0.03% |
Married
Widowed
Divorced
Separated
Never Married
Franklin County's average per capita income is $45,729. Household income levels show a median of $65,991. The poverty rate stands at 8.37%.
Name | Median | Mean |
|---|---|---|
| Married Families | $85,658 | - |
| Families | $83,263 | $105,245 |
| Households | $65,991 | $91,877 |
| Non Families | $34,345 | $41,505 |
Average Income
Median Household Income
Poverty Rate
