Mason County Population

1850–2026

29,017

2026 projection

0.1% 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 Mason County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202629,017-230.08%
202529,040-230.08%
202429,063-810.28%
202329,144-1970.67%
202229,341-30.01%
202129,344+3111.07%
202029,033-1210.42%
201929,154+330.11%
201829,121+960.33%
201729,025+1790.62%

Showing 10 of 32 years.

Mason County Demographics

47.3median age

Median age

Female48.8 yrs
Male45.3 yrs

Adults

23,493
7,689 seniors (65+) · 33% of adults15,804 other adults

Sex

Female 50% · 14,592Male 50% · 14,615

Population by age

MaleFemale85+ years, male: 27085+ years, female: 56880–84 years, male: 40580–84 years, female: 40375–79 years, male: 65875–79 years, female: 70370–74 years, male: 1,15570–74 years, female: 1,17165–69 years, male: 1,16665–69 years, female: 1,19060–64 years, male: 1,11860–64 years, female: 1,31755–59 years, male: 1,04655–59 years, female: 92250–54 years, male: 80150–54 years, female: 85545–49 years, male: 73845–49 years, female: 77840–44 years, male: 76840–44 years, female: 60035–39 years, male: 89235–39 years, female: 91330–34 years, male: 77330–34 years, female: 86325–29 years, male: 81625–29 years, female: 69320–24 years, male: 72520–24 years, female: 63615–19 years, male: 85215–19 years, female: 80010–14 years, male: 1,08710–14 years, female: 7605–9 years, male: 6945–9 years, female: 8000–4 years, male: 6510–4 years, female: 62085+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

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 292 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

$64,748median household income

Median household income

$64,748

Half of households earn more, half earn less

Median earnings

$43,118

Typical yearly pay for a worker 25 or older.

Poverty rate

14.1%

About 1 in 7 residents

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

Mason County Marital Status

55% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married55%55%55%
Never married24%27%21%
Divorced13%12%13%
Widowed8%5%10%
Separated<1%<1%1%

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

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year