Chubbuck, ID has a population of 14,326 and is the 2,935th largest city in the United States. The population density is 3,360 per sq mi which is 17510% higher than the Idaho average and 3609% higher than the national average. The median age in Chubbuck is 33 which is approximately 8% lower than the Idaho average of 36. In Chubbuck, 65% of the population over 15 years of age are married, 93% speak English and 4% speak Spanish. 65% of Chubbuck residents were born in Idaho, 30% were born out of state, 0% were born outside of the United States and 5% were foreign born.