Mason County Population

1860–2026

3,970

2026 projection

0% since 2020 (no change)

01K2K3K4K5K6K186018801900192019401960198020002020

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 Mason County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20263,970-200.50%
20253,990-200.50%
20244,010+731.85%
20233,937-461.15%
20223,983+471.19%
20213,936-340.86%
20203,970-3177.39%
20194,287+240.56%
20184,263+781.86%
20174,185+260.63%

Showing 10 of 31 years.

Mason County Demographics

52.7median age

Median age

Female55.8 yrs
Male47.7 yrs

Adults

3,197
1,392 seniors (65+) · 44% of adults1,805 other adults

Sex

Female 48.7% · 1,928Male 51.3% · 2,027

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 40 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

Mason County Income

$74,180median household income

Median household income

$74,180

Half of households earn more, half earn less

Median earnings

$44,056

Typical yearly pay for a worker 25 or older.

Poverty rate

7%

About 1 in 14 residents

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

Mason County Marital Status

64% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married64%63%64%
Never married16%21%12%
Divorced12%13%11%
Widowed8%3%13%
Separated<1%<1%0%

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