Miami County, Kansas Demographics 2026

Population Overview

Miami County is located in Kansas with a total population of 34,938. It is the 14th most populous county out of 105 in Kansas. The county encompasses 7 Census-designated places.

Age Demographics

The median age in Miami County is 41.7 years. This is 11% higher than the state median of 37.4 years.

Economy, Income & Housing

The median household income in Miami County is $89,000. This is 20% higher than the state median of $74,275. It is also 10% higher than the national median of $80,734. The poverty rate stands at 7.9%. This is 30% lower than the state poverty rate of 11.3%. The unemployment rate is 3.7%. This is 5% lower than the state rate of 3.9%. The median home value is $287,700. Housing costs are 32% higher than the state median of $217,200. The home-value-to-income ratio is 3.2x. 78.2% of occupied housing units are owner-occupied. This homeownership rate is 16% higher than the state average of 67.2%.

Race & Ethnicity

Miami County has a predominantly White (non-Hispanic) population, comprising 89.9% of all residents. Hispanic or Latino residents account for 4.1%. The Black or African American population (1.2%) is well below the state average of 5.1%. The Hispanic or Latino population (4.1%) is well below the state average of 13.6%. The Asian population (0.1%) is well below the state average of 2.9%.

Education

31.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 13% lower than the state rate of 35.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.2%.

Data Sources & Methodology

All figures for Miami County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Kansas and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.