Keystone city, Iowa Demographics & Population 2026

Population Overview

Keystone city is a small community located in Iowa. The total population is 825. It ranks as the 343rd most populous out of 1,018 cities and towns in Iowa.

Age Demographics

The median age in Keystone city is 36.0 years. This is 7% lower than the state median of 38.6 years. 13.0% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Keystone city is $68,750. This is 6% lower than the state median of $73,147. Compared to the national median of $78,538, household income here is 12% lower. The poverty rate stands at 10.8%. This is 2% lower than the state poverty rate of 11.0%. The unemployment rate is 3.3%. This is 8% lower than the state rate of 3.6%. The median home value is $141,100. Housing costs are 28% lower than the state median of $195,900. With a home-value-to-income ratio of just 2.1x, Keystone city is one of the most affordable housing markets in the area. 80.8% of occupied housing units are owner-occupied. This homeownership rate is 13% higher than the state average of 71.5%.

Race & Ethnicity

Keystone city has a predominantly White (non-Hispanic) population, comprising 91.0% of all residents. Hispanic or Latino residents account for 1.8%. The Black or African American population (1.3%) is well below the state average of 3.8%. The Hispanic or Latino population (1.8%) is well below the state average of 7.0%.

Education

21.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 31% lower than the state rate of 30.9%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 90.9%.

Data Sources & Methodology

All demographic data for Keystone city, Iowa is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Iowa state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,018 Census-designated places in Iowa. For official data, visit data.census.gov.