| | Columbia, LA | Bonners Ferry, ID | United States |
| Population | 377 | 2,495 | 329,725,481 |
| Female Population | 42.7% | 47.5% | 50.5% |
| Male Population | 57.3% | 52.6% | 49.5% |
| Median Age | 35.4 | 40.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 390 | 2,511 | 309,327,143 |
| Population - 2000 | 477 | 2,515 | 285,036,114 |
| Population - 1990 | 386 | 2,193 | 251,960,433 |
| Pop. 2000 to Now | -23.7% | 7.1% | 15.6% |
| Pop. 1990 to Now | -5.7% | 22.8% | 30.8% |
| space4 | | | |
| Population Density | 498.0 | 1,059.9 | 93.4 |
| Land Area | 0.8 | 2.4 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Columbia, LA | Bonners Ferry, ID | United States |
| Age 0 to 4 | 8.0% | 9.0% | 5.9% |
| Age 5 to 9 | 5.6% | 5.5% | 6.1% |
| Age 10 to 14 | 1.6% | 5.5% | 6.6% |
| Age 15 to 17 | 10.3% | 3.2% | 3.9% |
| Age 18 to 20 | 4.8% | 3.8% | 4.0% |
| Age 21 to 24 | 0.0% | 4.8% | 5.2% |
| Age 25 to 34 | 18.6% | 11.8% | 13.8% |
| Age 35 to 44 | 19.1% | 12.7% | 12.9% |
| Age 45 to 54 | 10.9% | 17.2% | 12.6% |
| Age 55 to 59 | 2.1% | 3.8% | 6.7% |
| Age 60 to 64 | 7.2% | 4.7% | 6.3% |
| Age 65 to 74 | 9.0% | 12.3% | 9.6% |
| Age 75 to 84 | 1.3% | 4.0% | 4.5% |
| Age 85 and over | 1.6% | 1.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Columbia, LA | Bonners Ferry, ID | United States |
| White | 68.7% | 87.1% | 59.4% |
| Black | 28.9% | 0.8% | 12.2% |
| Asian | 0.0% | 0.2% | 5.6% |
| Native American | 0.0% | 0.8% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.1% | 0.8% | 0.4% |
| Two or More Races | 0.5% | 1.9% | 3.2% |
| Hispanic | 0.8% | 8.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Columbia, LA | Bonners Ferry, ID | United States |
| Married Population | 41.6% | 48.3% | 49.8% |
| Currently Married | 41.3% | 44.2% | 48.0% |
| Married but Separated | 0.3% | 4.2% | 1.8% |
| Single Population | 58.4% | 51.7% | 50.2% |
| Never Married | 42.8% | 24.0% | 33.8% |
| Divorced | 9.4% | 18.0% | 10.8% |
| Widowed | 6.3% | 9.7% | 5.6% |
| space5 | | | |
| Household Size | 2.69 | 2.57 | 2.60 |
| Households | 123 | 938 | 124,010,992 |
| Family Households | 89 | 588 | 80,755,759 |
| Married couple, w/children | 22.5% | 36.1% | 30.5% |
| Married couple, no children | 43.8% | 38.3% | 42.9% |
| Non Family Households | 34 | 350 | 43,255,233 |
| Single householder, w/children | 32.6% | 15.3% | 15.8% |
| Single householder, no children | 1.1% | 10.4% | 10.8% |