Kimberly, ID has a population of 3,528 and is the 8,010th largest city in the United States. The population density is 2,246 per sq mi which is 11674% higher than the Idaho average and 2380% higher than the national average. The median age in Kimberly is 33 which is approximately 8% lower than the Idaho average of 36. In Kimberly, 65% of the population over 15 years of age are married, 92% speak English and 8% speak Spanish. 61% of Kimberly residents were born in Idaho, 35% were born out of state, 0% were born outside of the United States and 3% were foreign born.