Portsmouth, IA has a population of 162 and is the 25,356th largest city in the United States. The population density is 588 per sq mi which is 976% higher than the Iowa average and 549% higher than the national average. The median age in Portsmouth is 50 which is approximately 30% higher than the Iowa average of 38. In Portsmouth, 54% of the population over 15 years of age are married, 96% speak English and 4% speak Spanish. 74% of Portsmouth residents were born in Iowa, 26% were born out of state, 0% were born outside of the United States and 0% were foreign born.
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The population density in Portsmouth is 976% higher than Iowa.
The median age in Portsmouth is 30% higher than Iowa.
In Portsmouth 97.53% of the population is White.
In Portsmouth 1.23% of the population is Black or African American.