Wendell, ID has a population of 2,708 and is the 9,349th largest city in the United States. The population density is 1,925 per sq mi which is 9992% higher than the Idaho average and 2025% higher than the national average. The median age in Wendell is 32 which is approximately 11% lower than the Idaho average of 36. In Wendell, 70% of the population over 15 years of age are married, 64% speak English and 34% speak Spanish. 49% of Wendell residents were born in Idaho, 30% were born out of state, 0% were born outside of the United States and 20% were foreign born.