Lyon County, Kansas Demographics 2026

Population Overview

Lyon County is located in Kansas with a total population of 32,186. It is the 18th most populous county out of 105 in Kansas. The county encompasses 9 Census-designated places.

Age Demographics

The median age in Lyon County is 33.1 years. This is 11% lower than the state median of 37.4 years.

Economy, Income & Housing

The median household income in Lyon County is $59,912. This is 19% lower than the state median of $74,275. It is also 26% lower than the national median of $80,734. The poverty rate stands at 14.6%. This is 30% higher than the state poverty rate of 11.3%. The unemployment rate is 2.0%. This is 49% lower than the state rate of 3.9%. The median home value is $150,600. Housing costs are 31% lower than the state median of $217,200. With a home-value-to-income ratio of just 2.5x, Lyon County is one of the most affordable housing markets in the area. 57.9% of occupied housing units are owner-occupied. This homeownership rate is 14% lower than the state average of 67.2%.

Race & Ethnicity

The largest racial or ethnic group in Lyon County is White (non-Hispanic), making up 68.3% of the population. Hispanic or Latino residents account for 24.2%. The Black or African American population (1.4%) is well below the state average of 5.1%. The Hispanic or Latino population is significantly higher than the state average (24.2% vs 13.6%).

Education

26.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 26% 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 89.4%.

Data Sources & Methodology

All figures for Lyon 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.