Allen County Population

1860–2026

12,243

2026 projection

2.3% since 2020 (decrease)

05K10K15K20K25K30K186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Allen County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202612,243-590.48%
202512,302-590.48%
202412,361-930.75%
202312,454-150.12%
202212,469-320.26%
202112,501-320.26%
202012,533+1291.04%
201912,404-960.77%
201812,500-450.36%
201712,545-1220.96%

Showing 10 of 31 years.

Allen County Demographics

41.2median age

Median age

Female43.2 yrs
Male38.5 yrs

Adults

9,669
2,619 seniors (65+) · 27% of adults7,050 other adults

Sex

Female 50.9% · 6,360Male 49.1% · 6,123

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 125 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Allen County Income

$60,689median household income

Median household income

$60,689

Half of households earn more, half earn less

Median earnings

$40,716

Typical yearly pay for a worker 25 or older.

Poverty rate

9.9%

About 1 in 10 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Allen County Marital Status

53% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married53%57%49%
Never married24%28%21%
Divorced13%10%16%
Widowed8%4%12%
Separated2%1%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201