Coos County, New Hampshire Demographics 2026

Name: Coos County, New Hampshire Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Coos County, New Hampshire has a population of 31,271, the 10th most populous county in New Hampshire. The median household income is $57,677 and the median home value is $188,900. The poverty rate is 13.2%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Coos County Quick Facts

Population 31,271

Median Household Income $57,677

Median Home Value $188,900

Poverty Rate 13.2%

Unemployment Rate 4.3%

Median Age 50.3 years

Homeownership Rate 74.3%

Affordability Ratio 3.3x

Bachelor's Degree+ 20.1%

High School Graduation 90.4%

Cities/Places 7

Population 31,271 10th of 10

Median Income $57,677 42% lower than state

Poverty Rate 13.2%

Unemployment 4.3%

How Coos County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	31,386	31,271	-0.4%
Median household income	$58,439	$57,677	-1.3%
Median home value	$169,600	$188,900	+11.4%

Median Household Income

Coos

$57,677

$99,031

National

$80,734

Median Home Value

Coos

$188,900

$402,500

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 20.4%

$25K-$50K 22.3%

$50K-$100K 32.1%

$100K+ 25.2%

Detailed income brackets

Under $10K

5.4%

$10K-$15K

4.3%

$15K-$20K

5.9%

$20K-$25K

4.9%

$25K-$30K

5.0%

$30K-$35K

4.6%

$35K-$40K

5.2%

$40K-$45K

3.5%

$45K-$50K

4.0%

$50K-$60K

9.1%

$60K-$75K

8.7%

$75K-$100K

14.3%

$100K-$125K

8.4%

$125K-$150K

5.5%

$150K-$200K

6.4%

$200K+

4.9%

Employment

4.3% Unemployment Rate State: 3.4%|National: 5.2%

52.9% Labor Force Participation

Housing Overview

Owner 74.3%

Renter 25.7%

Affordability Index Affordable

3.3x home value to income ratio

Median gross rent $876/mo 18.2% of median household income annually

People & Demographics

Age Distribution

Under 18

16.0%

18-34

16.8%

35-54

23.8%

55-74

33.1%

75+

10.3%

Race & Ethnicity

Diversity Index

Very Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 24 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Coos County

City	Population	Median Income	Poverty	Home Value
Berlin	9,383	$45,180	15.3%	$131,000
Lancaster	2,230	$66,765	19.2%	$200,500
Gorham	2,092	$62,679	5.5%	$146,300
Whitefield	1,512	$61,429	12.7%	$195,400
Colebrook	1,268	$46,833	15.1%	$156,700
Groveton	834	$37,321	27.1%	$104,700
West Stewartstown	312	$80,167	9.8%	$27,600

Explore New Hampshire Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Coos County is located in New Hampshire with a total population of 31,271. It is the 10th most populous county out of 10 in New Hampshire. The county encompasses 7 Census-designated places.

Age Demographics

The median age in Coos County is 50.3 years. This is 16% higher than the state median of 43.3 years. 10.3% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Coos County is $57,677. This is 42% lower than the state median of $99,031. It is also 29% lower than the national median of $80,734. The poverty rate stands at 13.2%. This is 82% higher than the state poverty rate of 7.2%. The unemployment rate is 4.3%. This is 28% higher than the state rate of 3.4%. The median home value is $188,900. Housing costs are 53% lower than the state median of $402,500. The home-value-to-income ratio is 3.3x. 74.3% of occupied housing units are owner-occupied. This homeownership rate is 2% higher than the state average of 72.8%.

Race & Ethnicity

Coos County has a predominantly White (non-Hispanic) population, comprising 91.9% of all residents. Hispanic or Latino residents account for 2.4%. The Black or African American population is significantly higher than the state average (2.0% vs 1.3%). The Asian population (0.1%) is well below the state average of 2.6%.

Education

20.1% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. This is 51% lower than the state rate of 40.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 90.4%.

Data Sources & Methodology

All figures for Coos County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against New Hampshire and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Coos County, New Hampshire?

Coos County has a population of 31,271, making it the 10th most populous county in New Hampshire.

What is the median income in Coos County?

The median household income in Coos County is $57,677 with a poverty rate of 13.2%.

How many cities are in Coos County, New Hampshire?

Coos County contains 7 Census-designated places.