Allen County is a county of 12,483 people in Kansas. The typical home is worth $107,600, having more than doubled since 2000. Four-year degrees are less common here than nationally, at 22% of adults. The foreign-born share is 3%. There are 25 people per square mile. 75% of homes are owner-occupied.
At a glance
Lower income
median household income $60,689, below the US median
US median: $82,259
Older
median age 41.2
US median: 38.9
Less educated
22% hold a bachelor's degree
US average: 36%
Less affordable
home values up 36%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Allen County
What changed most since 1990
White share95.9% → 88.5%(−7.4 pts)US over the same years: −17.8 pts
Population14,638 → 12,483(−15%)US over the same years: +35%
Hispanic share1.2% → 4.3%(+3.1 pts)US over the same years: +9.9 pts
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
Veterans by period of service, 2024
Gulf War (2001 or later)20.1%(155)
US avg: 26.4%
Gulf War (1990s)26.6%(205)
US avg: 24.3%
Vietnam era47.8%(369)
US avg: 33.1%
Korean War7.6%(59)
US avg: 4.5%
World War II1.7%(13)
US avg: 1%
Share of the 772 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Allen County, decade by decade
Allen County 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
1990
14,638
$49,859
$66,002
12.4%
9.9
2000
14,385
$57,348
$79,060
15.2%
14.5
2010
13,371
$59,767
$92,644
17.7%
19.2
2020
12,526
$58,157
$97,327
18.2%
28.2
2024
12,483
$60,689
$107,600
22.4%
26.6
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.
