Penobscot County Population

1820–2026

158.65K

2026 projection

4.3% since 2020 (increase)

050K100K150K200K1850190019502000

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 Penobscot County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026158,651+6840.43%
2025157,967+6840.43%
2024157,283+4440.28%
2023156,839+1,8911.22%
2022154,948+1,5811.03%
2021153,367+1,1930.78%
2020152,174+3510.23%
2019151,823+250.02%
2018151,798+130.01%
2017151,785+3660.24%

Showing 10 of 35 years.

Penobscot County Demographics

42.5median age

Median age

Female43.9 yrs
Male41.1 yrs

Adults

127,461
31,088 seniors (65+) · 24% of adults96,373 other adults

Sex

Female 50.3% · 77,861Male 49.7% · 76,849

Population by age

MaleFemale85+ years, male: 1,34585+ years, female: 2,18180–84 years, male: 1,31580–84 years, female: 1,93475–79 years, male: 2,62775–79 years, female: 2,82770–74 years, male: 3,96870–74 years, female: 4,54865–69 years, male: 5,11565–69 years, female: 5,22860–64 years, male: 5,69360–64 years, female: 6,10355–59 years, male: 5,55955–59 years, female: 5,60250–54 years, male: 5,03350–54 years, female: 4,98145–49 years, male: 4,37445–49 years, female: 4,52540–44 years, male: 4,45240–44 years, female: 5,14135–39 years, male: 4,83435–39 years, female: 4,56130–34 years, male: 5,27430–34 years, female: 5,01325–29 years, male: 4,69725–29 years, female: 4,60220–24 years, male: 5,69620–24 years, female: 4,92615–19 years, male: 5,51715–19 years, female: 5,06910–14 years, male: 4,01610–14 years, female: 3,1995–9 years, male: 4,0125–9 years, female: 4,1620–4 years, male: 3,3220–4 years, female: 3,25985+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–42K2K4K4K

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 1,547 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

Penobscot County Income

$66,356median household income

Median household income

$66,356

Half of households earn more, half earn less

Median earnings

$46,621

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

Penobscot County Marital Status

48% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married48%49%46%
Never married32%36%28%
Divorced14%12%15%
Widowed6%3%9%
Separated1%<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