Crystal Lake Park, Missouri Demographics & Population 2026

A note before these figures: with a population of 553, Crystal Lake Park'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

Crystal Lake Park is a small community located in Missouri, within St. Louis County. The total population is 553. It ranks as the 493rd most populous out of 1,062 Census-designated places in Missouri.

Age Demographics

The median age in Crystal Lake Park is 48.4 years. This is 24% higher than the state median of 39.0 years. 17.7% 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 Crystal Lake Park is $159,554. This is 126% higher than the state median of $70,702. It is also 98% higher than the national median of $80,734. The poverty rate stands at 1.1%. This is 91% lower than the state poverty rate of 12.6%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 1.2%. This is 69% lower than the state rate of 4.0%. The median home value is $627,600. Housing costs are 173% higher than the state median of $230,300. The home-value-to-income ratio is 3.9x. 93.8% of occupied housing units are owner-occupied. This homeownership rate is 38% higher than the state average of 68.1%.

Race & Ethnicity

The largest racial or ethnic group in Crystal Lake Park is White (non-Hispanic), making up 80.7% of the population. Asian residents account for 8.3%. The Black or African American population (2.5%) is well below the state average of 10.9%. The Asian population is significantly higher than the state average (8.3% vs 2.1%).

Education

84.9% of residents aged 25 and older hold a bachelor's degree or higher. This places Crystal Lake Park in the top 10% of all cities in the state for educational attainment. This is 162% higher than the state rate of 32.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. No surveyed resident aged 25 or older reported leaving school before earning a high school diploma, though a rate of exactly 100% reflects the limits of a small sample. Notably, 44.9% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Crystal Lake Park, 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.