Coos County
Coos County has notably lower household income than the US average, with a median household income of $57,677. Population has declined 6% since 2000. 20% of adults hold a bachelor's degree or higher, below the national rate of 36%. Median home value has more than doubled since 2000, reaching $188,900. With a median age of 50.3, the population is older than the US median of 38.9. Households here earn about 42% less than the New Hampshire median.
Population & growth
PEP 2025 EST:31,343 residents (Census Bureau Vintage 2025, released March 2026)
Income & economy
Housing
Race & ethnicity
Detailed origins & ancestry
+ 1 more hispanic origin group with data
+ 28 more ancestry groups with data
Education
Commute & transportation
Work & employment
People & community
Places similar to Coos County
Compare Coos County to nearby counties
How many people live in Coos County, New Hampshire?
Coos County, New Hampshire has about 31,271 residents according to the 2024 American Community Survey.
What is the median household income in Coos County, New Hampshire?
The typical household in Coos County, New Hampshire earns about $57,677 a year. Half of households make more than that, and half make less.
Is Coos County, New Hampshire expensive?
In Coos County, New Hampshire, the median home is worth about $188,900, and the typical rent is about $876 a month.
How educated are people in Coos County, New Hampshire?
About 20.1% of adults age 25 and over in Coos County, New Hampshire hold a bachelor's degree or higher.
What is the poverty rate in Coos County, New Hampshire?
About 13.2% of people in Coos County, New Hampshire live below the federal poverty line.
Has Coos County, New Hampshire grown since 1990?
Yes, Coos County, New Hampshire has shrunk since 1990. The population has lost about 3,557 residents, a change of about -10 percent over that period.
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024