Willowbrook, Kansas Demographics & Population 2026

A note before these figures: with a population of 81, Willowbrook's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Willowbrook is a small community located in Kansas, within Reno County. The total population is 81. It ranks as the 581st most populous out of 721 Census-designated places in Kansas.

Age Demographics

The median age in Willowbrook is 70.3 years. This is 88% higher than the state median of 37.4 years. Only 7.4% of residents are under 18, indicating fewer families with children. 19.8% 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 Willowbrook is $142,500. This is 92% higher than the state median of $74,275. It is also 77% higher than the national median of $80,734. The ACS records no residents below the poverty line in Willowbrook. In a community this small the estimate rests on very few survey responses, so it should be read as an absence of measurement rather than a measured absence of poverty. The survey records no unemployed residents in Willowbrook, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $422,700. Housing costs are 95% higher than the state median of $217,200. The home-value-to-income ratio is 3.0x. 96.4% of occupied housing units are owner-occupied. This homeownership rate is 44% higher than the state average of 67.2%.

Race & Ethnicity

Willowbrook has a predominantly White (non-Hispanic) population, comprising 87.6% of all residents. Asian residents account for 7.4%. The Asian population is significantly higher than the state average (7.4% vs 2.9%).

Education

41.3% of residents aged 25 and older hold a bachelor's degree or higher. This places Willowbrook in the top 10% of all cities in the state for educational attainment. This is 16% higher 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 90.7%.

Data Sources & Methodology

All demographic data for Willowbrook, Kansas is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Kansas state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 721 Census-designated places in Kansas. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.