Allen is home to 55 people in Maryland. At a median age of 69.9, this is an older place than the country as a whole. 100% of homes are owner-occupied. The population has fallen 56% since 2023. This is an unusually credentialed place: 53% of adults have a four-year degree. The foreign-born share is 0%.
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Over time
Allen, decade by decade
Allen population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
2010
210
$100,215
$412,582
56.0%
22.3
2020
199
$137,949
$223,985
49.5%
33.8
2024
55
–
–
52.7%
24.3
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
