Spring Mill, Kentucky Demographics & Population 2026

A note before these figures: with a population of 389, Spring Mill'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

Spring Mill is a small community located in Kentucky, within Jefferson County. The total population is 389. It ranks as the 385th most populous out of 552 Census-designated places in Kentucky.

Age Demographics

The median age in Spring Mill is 40.8 years. This is 4% higher than the state median of 39.1 years. With 30.9% of the population under 18, Spring Mill has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Spring Mill is $109,375. This is 72% higher than the state median of $63,726. It is also 35% higher than the national median of $80,734. The poverty rate stands at 1.5%. This is 90% lower than the state poverty rate of 16.1%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 2.5%. This is 49% lower than the state rate of 4.9%. The median home value is $316,700. Housing costs are 54% higher than the state median of $205,600. With a home-value-to-income ratio of just 2.9x, Spring Mill is one of the most affordable housing markets in the area. 95.0% of occupied housing units are owner-occupied. This homeownership rate is 39% higher than the state average of 68.3%.

Race & Ethnicity

Spring Mill has a predominantly White (non-Hispanic) population, comprising 85.6% of all residents. Black or African American residents account for 5.4%. The Hispanic or Latino population (0.5%) is well below the state average of 5.0%.

Education

51.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 88% higher than the state rate of 27.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 95.0%. Notably, 15.4% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Spring Mill, Kentucky 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 Kentucky state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 552 Census-designated places in Kentucky. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.