Westphalia, Missouri Demographics & Population 2026

A note before these figures: with a population of 415, Westphalia'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

Westphalia is a small community located in Missouri, within Osage County. The total population is 415. It ranks as the 564th most populous out of 1,062 Census-designated places in Missouri.

Age Demographics

The median age in Westphalia is 31.9 years. This is 18% lower than the state median of 39.0 years. 15.7% 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 Westphalia is $61,136. This is 14% lower than the state median of $70,702. It is also 24% lower than the national median of $80,734. The poverty rate stands at 4.8%. This is 62% lower than the state poverty rate of 12.6%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The survey records no unemployed residents in Westphalia, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $202,600. Housing costs are 12% lower than the state median of $230,300. The home-value-to-income ratio is 3.3x. 72.5% of occupied housing units are owner-occupied. This homeownership rate is 6% higher than the state average of 68.1%.

Race & Ethnicity

Westphalia has a predominantly White (non-Hispanic) population, comprising 89.9% of all residents. Hispanic or Latino residents account for 4.8%.

Education

33.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 4% higher than the state rate of 32.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 88.8%.

Data Sources & Methodology

All demographic data for Westphalia, Missouri 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 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. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.