Arnold city, Missouri Demographics & Population 2026

Population Overview

Arnold city is a small city located in Missouri. The total population is 20,884. It ranks as the 37th most populous out of 1,062 cities and towns in Missouri.

Age Demographics

The median age in Arnold city is 39.9 years. This is 3% higher than the state median of 38.9 years.

Economy, Income & Housing

The median household income in Arnold city is $75,194. This is 9% higher than the state median of $68,920. Compared to the national median of $78,538, household income here is 4% lower. The poverty rate stands at 7.7%. This is 39% lower than the state poverty rate of 12.6%. The unemployment rate is 4.2%. This is 2% higher than the state rate of 4.1%. The median home value is $209,700. Housing costs are 3% lower than the state median of $215,600. With a home-value-to-income ratio of just 2.8x, Arnold city is one of the most affordable housing markets in the area. 79.6% of occupied housing units are owner-occupied. This homeownership rate is 17% higher than the state average of 67.9%.

Race & Ethnicity

Arnold city has a predominantly White (non-Hispanic) population, comprising 90.0% of all residents. Hispanic or Latino residents account for 2.2%. The Black or African American population (0.2%) is well below the state average of 11.0%. The Hispanic or Latino population (2.2%) is well below the state average of 5.1%.

Education

24.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 25% lower than the state rate of 31.9%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.0%.

Data Sources & Methodology

All demographic data for Arnold city, Missouri 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 Missouri state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,062 Census-designated places in Missouri. For official data, visit data.census.gov.