Kennebec County, Maine Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Kennebec County, ME Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
-
B
Health Around average
-
C
Income Below average
-
C
Education Below average
Source: Map AI Methodology
Population: density and quick facts
| Metric | Kennebec County | Maine Avg | U.S. Average |
|---|---|---|---|
| Population | 126,799 | 1,387,521 | 337,468,954 |
| Population density (per sq mi) | 133.4 | 39.2 | 86.4 |
| Population growth (%/yr) | 0.59% | 0.53% | 0.59% |
| Median age | 41.9 | 43.6 | 37.3 |
| Households | 54,308 | 597,020 | 130,235,071 |
Population in Kennebec County grew by 4.9% from 2009 to 2024, reaching 126,799 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Kennebec County is Gen X, aged 45–60, at 22.5% of residents. That is 0.4 points above Maine as a whole.
- Gen Z 13–28 24,446 19.3% +0.7 pts
- Millennials 29–44 24,866 19.6% -0.4 pts
- Gen X 45–60 28,485 22.5% +0.4 pts
- Boomers 61–79 25,808 20.4% -1.1 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Maine, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 51.4% of the people living in Kennebec County and men 48.6%.
- Women 51.4% Maine 50.9%
- Men 48.6% Maine 49.1%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Kennebec County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Kennebec County has a the economy index of C, which means it is somewhat prosperous.
| Metric | Kennebec County | Maine Avg | U.S. Average |
|---|---|---|---|
| Median household income | $68,834 | $74,723 | $80,455 |
| Income growth (%/yr) | 4.50% | 4.91% | 4.80% |
| Unemployment rate | 3.9% | 3.8% | 5.2% |
The median household income in Kennebec County is about 8% lower than in Maine.
Housing
| Metric | Kennebec County | Maine Avg | U.S. Average |
|---|---|---|---|
| Median home price | $174,285 | $261,367 | $248,835 |
| Median rent | $991 | $1,139 | $1,407 |
| Homeownership rate | 73.7% | 74.3% | 65.2% |
The median home price in Kennebec County is about 14.7 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $991 per month for that long.
Commute Time & Mobility
Commuters in Kennebec County spend about 42 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 176 hours, about 7.3 full days, spent commuting.
| Metric | Kennebec County | Maine Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 21.1 | 20.8 | 22.4 |
| Round-trip commute (min) | 42.2 | 41.6 | 44.8 |
| Yearly time spent (hours) | 176 | 173 | 187 |
| Estimated yearly cost | $5,452 | $5,372 | $5,790 |
| Work from home | 15.3% | 15.9% | 15.0% |
| Highway traffic (vehicles/day) | 5,082 | 4,904 | 8,813 |
| Local road traffic (vehicles/day) | 1,195 | 1,015 | 1,355 |
Fastest commutes among counties in
Maine:
Aroostook County (13.5 min), Piscataquis County (16.3 min), Knox County (16.6 min).
Slowest:
York County (23.9 min), Oxford County (23.4 min), Somerset County (22.5 min).
The average commute time in Kennebec County is about the same as in Maine.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Kennebec County has a education index of C, which means it is somewhat educated.
| Metric | Kennebec County | Maine Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 27.8% | 31.9% | 31.6% |
| Average household size | 2.25 | 2.25 | 2.53 |
Highest education index among counties in
Maine:
Cumberland County (0.4), Sagadahoc County (0.3), Hancock County (0.3).
Lowest:
Somerset County (0.2), Piscataquis County (0.2), Aroostook County (0.2).
Health
Kennebec County has a health index of B, which means it is quite healthy.
| Metric | Kennebec County | Maine Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 77.8 | 78.2 | 78.3 |
| Self-rated poor health | 13.3% | 13.9% | 16.3% |
| Smokers | 18.7% | 18.8% | 19.0% |
Highest health index among counties in
Maine:
Cumberland County (0.8), York County (0.8), Sagadahoc County (0.8).
Lowest:
Washington County (0.8), Piscataquis County (0.8), Aroostook County (0.8).
Kennebec County, ME Compared With Nearby Counties
Kennebec County, ME is the 2nd largest of the 6 counties compared here, 126,799 residents against a local median of 40,192. The measure that sets Kennebec County, ME apart most is median home price: $174,285, 33% below the local median of $258,333.
The counties themselves spread $263,551 on median home price, so Kennebec County, ME sits at one end of an already wide local range rather than apart from it. Kennebec County, ME has the 5th highest median home price of the 6 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Kennebec County, ME | 126,799 | $68,834 #5/6 | $174,285 #5/6 | 21.1 min #3/6 |
| Lincoln County, ME | 36,099 | $76,791 | $248,842 | 21.2 min |
| Androscoggin County, ME | 113,398 | $67,035 | $145,070 | 20.9 min |
| Sagadahoc County, ME | 37,285 | $86,674 | $408,621 | 22.2 min |
| Waldo County, ME | 40,192 | $72,583 | $258,333 | 22.4 min |
| Cumberland County, ME | 308,608 | $95,774 | $343,438 | 20.3 min |
Frequently Asked Questions
Common questions about Kennebec County, Maine.
How many people live in Kennebec County, Maine?
About 126,799 people live in Kennebec County, Maine, in 54,308 households of 2.3 people on average. The median age is 41.9, so residents are older than the U.S. median of 37.3 by about 5 years.
Is Kennebec County, Maine mostly urban or rural?
Averaged over its land area, Kennebec County, Maine has 133 people per square mile, a density typical of a mix of suburbs, small towns and farmland. That is about 1.5 times the U.S. average of 86.
Is Kennebec County, Maine an affordable place to live?
The median home costs 2.5 times the median household income ($174,285 against $68,834), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $991 a month takes about 17% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is unemployment high in Kennebec County, Maine?
Unemployment in Kennebec County, Maine is only 3.9%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
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