Glen Allen, Alabama Demographics & Population 2026

A note before these figures: with a population of 372, Glen Allen'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

Glen Allen is a small community located in Alabama, within Marion County. The total population is 372. It ranks as the 450th most populous out of 592 Census-designated places in Alabama.

Age Demographics

The median age in Glen Allen is 53.8 years. This is 37% higher than the state median of 39.3 years. Only 10.5% of residents are under 18, indicating fewer families with children.

Economy, Income & Housing

The median household income in Glen Allen is $46,313. This is 28% lower than the state median of $63,999. It is also 43% lower than the national median of $80,734. The poverty rate stands at 10.3%. This is 34% lower than the state poverty rate of 15.6%. The unemployment rate is 4.3%. This is 8% lower than the state rate of 4.7%. The median home value is $89,600. Housing costs are 57% lower than the state median of $209,900. With a home-value-to-income ratio of just 1.9x, Glen Allen is one of the most affordable housing markets in the area. 93.8% of occupied housing units are owner-occupied. This homeownership rate is 34% higher than the state average of 70.2%.

Race & Ethnicity

Glen Allen has a predominantly White (non-Hispanic) population, comprising 88.2% of all residents. Black or African American residents account for 10.8%. The Black or African American population (10.8%) is well below the state average of 25.6%. The Hispanic or Latino population (0.8%) is well below the state average of 5.6%.

Education

7.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 75% lower than the state rate of 28.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 79.6%.

Data Sources & Methodology

All demographic data for Glen Allen, Alabama 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 Alabama state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 592 Census-designated places in Alabama. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.