Linn County Population

1860–2026

10,036

2026 projection

4.6% since 2020 (increase)

05K10K15K20K186018801900192019401960198020002020

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 Linn County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202610,036+860.86%
20259,950+860.87%
20249,864-360.36%
20239,900+1201.23%
20229,780+250.26%
20219,755+1601.67%
20209,595-1191.23%
20199,714-570.58%
20189,771+770.79%
20179,694+900.94%

Showing 10 of 31 years.

Linn County Demographics

45.7median age

Median age

Female45.5 yrs
Male45.8 yrs

Adults

7,621
2,227 seniors (65+) · 29% of adults5,394 other adults

Sex

Female 48.9% · 4,772Male 51.1% · 4,995

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 98 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

Linn County Income

$59,069median household income

Median household income

$59,069

Half of households earn more, half earn less

Median earnings

$49,267

Typical yearly pay for a worker 25 or older.

Poverty rate

8.4%

About 1 in 12 residents

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

Linn County Marital Status

60% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married60%64%57%
Never married19%22%15%
Divorced12%10%13%
Widowed9%4%14%
Separated<1%<1%<1%

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