Lakeside, IA has a population of 674 and is the 17,695th largest city in the United States. The population density is 2,936 per sq mi which is 5274% higher than the Iowa average and 3141% higher than the national average. The median age in Lakeside is 48 which is approximately 25% higher than the Iowa average of 38. In Lakeside, 67% of the population over 15 years of age are married, 63% speak English and 32% speak Spanish. 58% of Lakeside residents were born in Iowa, 18% were born out of state, 1% were born outside of the United States and 23% were foreign born.