Mason County, Michigan Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 49th-largest in Michigan
The population of Mason County, Michigan is 29,177 as of the 2023 American Community Survey, making it the 49th-largest county in Michigan. The median household income is $62,296, the median home value is $199,300, and the median age is 47.2.
The population of Mason County has grown 1.3% since 2010 (28,719 → 29,093), a +0.09% annualized rate.
29,177
Population
+0.09%
Annual growth
59
People / sq mi
$62,296
Median Income
$199,300
Median Home Value
Mason County covers 495 sq mi of land at 58.9 people per square mile.
About Mason County, MI
Age is the most distinctive thing about Mason County: a median age of 47.2, older than the national median. With 29,177 residents, Mason County is a county in Michigan. It ranks #49 among counties in Michigan by population.
The typical household here earns about $62,296, below the US median of $78,538. About 9.5% of residents live below the federal poverty level, below the national 12.4%. Homes carry a median value of $199,300, with typical rent around $840.
Roughly 25.0% of adults have a bachelor’s, below the national 35.0%. Remote work is below the national 14.0% at 9.2%, and the average commute runs about 20 minutes each way.
The age structure shapes everything downstream in Mason County — from housing demand to the mix of working-age earners reflected in the income figures above.
Mason County Population History (2010-2024)
The county of Mason County had a population of 28,719 in 2010 and 29,093 in 2024, a 1.3% growth over 14 years. The peak was 29,357 in 2022. Average annual growth rate: 0.09%.
29,093
Population (2024)
28,719
Population (2010)
29,357
Peak (2022)
0.09%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 28,719 |
| 2011 | 28,649 |
| 2012 | 28,667 |
| 2013 | 28,680 |
| 2014 | 28,748 |
| 2015 | 28,754 |
| 2016 | 28,846 |
| 2017 | 29,025 |
| 2018 | 29,121 |
| 2019 | 29,154 |
| 2020 | 29,037 |
| 2021 | 29,350 |
| 2022 | 29,357 |
| 2023 | 29,199 |
| 2024 | 29,093 |
Race & Ethnicity
| White | 92.3% |
| Black or African American | 1.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.8% |
| Two or More Races | 0.0% |
Age & Sex
47.2
Median Age
49.7%
Female
50.3%
Male
25.6%
Age 65+
Age Distribution
Children (under 15): 16.3% · Seniors (65+): 25.6%
Income & Poverty
| Median household income | $62,296$-8,853 vs state |
| Mean household income | $80,155 |
| Per-capita income | $34,751 |
| Poverty rate | 9.5%+0.7% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 51.7% |
Top Industries by Employment
The largest employment sector in Mason County is professional & business services, accounting for 21.4% of workers.
How residents commute
0.4%
Drive alone
2.1%
Carpool
75.7%
Public transit
9.2%
Work from home
19.9 min
Avg commute
Housing
$199,300$-18,300 vs state
Median home value
$840
Median rent
78.1%
Homeownership rate
17,499
Total housing units
71.0%
Occupied
29.0%
Vacant
21.9%
Renter-occupied
Social & access
93.9%
With health insurance
93.4%
With broadband internet
18.6%
Foreign-born
8.4%
Veterans (18+)
16.7%
With a disability
97.2%
Speak language other than English at home
Education
93.4%
High School+
25.0%
Bachelor's+
Largest cities in Michigan
Other counties in Michigan
Part of Michigan
Metro areas in Michigan
County rankings
Frequently Asked Questions
Mason County, Michigan has a population of 29,177 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 49th-largest county in Michigan. Population density is 59 people per square mile.
The population of Mason County has grown 1.3% since 2010 (28,719 → 29,093), a +0.09% annualized rate.
The median household income in Mason County, Michigan is $62,296, with mean (average) household income of $80,155 and per-capita income of $34,751. 9.5% of residents live below the federal poverty level.
In Mason County, the largest racial and ethnic groups are White (92.3%), Hispanic or Latino (1.8%), Black or African American (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Mason County, Michigan is 47.2 years. Residents are 49.7% female and 50.3% male.
The median home value in Mason County is $199,300 and median monthly rent is $840. 78.1% of occupied housing units are owner-occupied. The county has 17,499 total housing units, 29.0% of which are vacant.
The largest employment sector in Mason County, Michigan is professional, scientific, and management services, employing 21.4% of workers. The unemployment rate is 2.5%.
Detroit is among the largest cities associated with Mason County, Michigan, with a population of 636,644.
Mason County, MI Climate
Mason County, MI has an average annual temperature of 7.8°C (46°F) and receives about 846 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
7.8°C
Avg Temp
846
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -5° / 23° | 52 mm |
| February | -4° / 24° | 37 mm |
| March | 0° / 31° | 53 mm |
| April | 6° / 42° | 73 mm |
| May | 12° / 53° | 66 mm |
| June | 17° / 62° | 78 mm |
| July | 20° / 69° | 57 mm |
| August | 20° / 68° | 98 mm |
| September | 16° / 61° | 103 mm |
| October | 10° / 50° | 84 mm |
| November | 4° / 39° | 79 mm |
| December | -1° / 29° | 66 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Mason County, MI
The most comfortable months to visit Mason County, MI are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 26°C high). The coldest is January (near -9°C low). September is usually the wettest month.
Where to stay near Mason County
Visiting or relocating to Mason County, MI? Compare hotels and short-term rentals across the county — live availability and prices.
Top-rated places to stay near Mason County
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a move to Mason County?
Get relocation and cost-of-living insights for Mason County, MI by email. No spam, unsubscribe anytime.
More from Michigan
Population 1,773,767
Population 1,272,294
Population 877,624
Population 658,844
Full rankings of Michigan counties
Statewide data for Michigan
Population, race, income, age, and trends across Michigan
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.