10th most populous of 10
With 31,094 residents in 2024, Coos County ranks 10th by population among New Hampshire's 10 counties and is home to 2.2% of the state's residents.
Coos County is home to 31,094 people (2024 estimate) on 1,795 square miles of land. This page brings together official U.S. Census Bureau population estimates since 2000, the components of change—births, deaths and migration—American Community Survey indicators on income, housing, poverty and education, BEA economic accounts and BLS unemployment.
Key indicators
Population
31,094
July 1, 2024 estimate
2020 Census base
31,259
April 1, 2020
Change since 2020
−0.5%
2020–2024
Land area
1,795 mi²
4,648 km²
Population density
17.3 /mi²
2024 estimate ÷ land area
Births
209
Year to July 1, 2024
Deaths
519
Year to July 1, 2024
Natural change
−310
Births minus deaths, 2024
Net migration
+197
Domestic + international, 2024
Per capita personal income
$60,657
BEA, 2024
Gross domestic product
$1.8 billion
BEA, current dollars, 2024
Median household income
$57,677
ACS 2020–2024 5-year
Poverty rate
13.2%
ACS 2020–2024 5-year
Bachelor’s degree or higher
20.1%
Age 25+, ACS 2020–2024 5-year
Foreign-born residents
2.8%
ACS 2020–2024 5-year
Median home value
$188,900
ACS 2020–2024 5-year
Unemployment rate
2.7%
BLS annual average, 2024
Historical data
Pick an indicator to see its long-run evolution.
Population
2000–202431,094▼ 6%
U.S. Census Bureau: intercensal estimates 2000–2009, Vintage 2020 (2010–2019) and Vintage 2024 (2020–2024), July 1.
Data summary
| Indicator | Value | Year and source |
|---|---|---|
| Population estimate | 31,094 | 2024 · U.S. Census Bureau |
| Population, 2010 Census | 33,055 | 2010 · U.S. Census Bureau |
| Population, 2000 | 33,158 | July 1, 2000 · Census intercensal |
| Change since 2000 | −6.2% | 2000–2024 · Census |
| International migration | +34 | 2024 · Census Vintage 2024 |
| Domestic migration | +163 | 2024 · Census Vintage 2024 |
| Birth rate | 6.7 per 1,000 | 2024 · calculated |
| Death rate | 16.7 per 1,000 | 2024 · calculated |
| Population rank in New Hampshire | 10th of 10 | 2024 · calculated |
| Per capita personal income | $60,657 | BEA, 2024 · official |
| Gross domestic product | $1.8 billion | BEA, current dollars, 2024 · official |
| Median household income | $57,677 | ACS 2020–2024 5-year · official |
| Poverty rate | 13.2% | ACS 2020–2024 5-year · official |
| Bachelor’s degree or higher | 20.1% | Age 25+, ACS 2020–2024 5-year · official |
| Foreign-born residents | 2.8% | ACS 2020–2024 5-year · official |
| Median home value | $188,900 | ACS 2020–2024 5-year · official |
| Median gross rent | $876/month | ACS 2020–2024 5-year · official |
| Median age | 50.3 years | ACS 2020–2024 5-year · official |
| Households | 14,002 | ACS 2020–2024 5-year · official |
| Owner-occupied homes | 74.2% | ACS 2020–2024 5-year · official |
Coos County in context
Comparable indicators for Coos County, New Hampshire and the United States.
| Indicator | County | New Hampshire | U.S. | Reference |
|---|---|---|---|---|
| Population change 2020–2024 | −0.5% | +2.3% | +2.6% | Census Vintage 2024 |
| Birth rate (per 1,000) | 6.7 | 8.4 | 10.6 | 2024 |
| Death rate (per 1,000) | 16.7 | 10.0 | 9.1 | 2024 |
| Net migration rate (per 1,000) | 6.3 | 6.5 | 8.2 | 2024 |
| Population density (/mi²) | 17.3 | 157.4 | 96.3 | 2024 |
| Per capita personal income | $60,657 | $83,192 | $73,204 | BEA, 2024 |
| Median household income | $57,677 | $99,031 | $80,734 | ACS 2020–2024 5-year |
| Poverty rate | 13.2% | 7.2% | 12.5% | ACS 2020–2024 5-year |
| Bachelor’s degree or higher | 20.1% | 40.6% | 35.7% | Age 25+, ACS 2020–2024 5-year |
| Foreign-born residents | 2.8% | 6.1% | 14.1% | ACS 2020–2024 5-year |
| Median home value | $188,900 | $402,500 | $332,700 | ACS 2020–2024 5-year |
| Median gross rent | $876/month | $1,491/month | $1,413/month | ACS 2020–2024 5-year |
| Median age | 50.3 years | 43.3 years | 38.9 years | ACS 2020–2024 5-year |
| Owner-occupied homes | 74.2% | 72.8% | 65.2% | ACS 2020–2024 5-year |
Did you know? Coos County
A quarter century of change
Its population went from 33,158 in 2000 to 31,094 in 2024, a change of −6.2%, compared with +13.6% for New Hampshire as a whole.
Births and deaths
In the year to July 2024 the county recorded 209 births and 519 deaths, so deaths outnumbered births by 310.
Peak population in 2005
Annual Census estimates since 2000 put the county's highest population at 33,845 in 2005. The 2024 figure is 2,751 lower.
10th in density
Coos County has about 17.3 residents per square mile of land, ranking 10th of 10 counties; New Hampshire averages 157.4.
Household income rank
With a median household income of $57,677 (ACS 2020–2024 5-year), the county ranks 10th of 10 New Hampshire counties; the state median is $99,031.
Size of the economy
Its economy produced $1.8 billion of GDP in 2024 (BEA), 10th largest among 10 New Hampshire counties.
Latest economic growth
Real GDP fell 0.1% in 2024, adjusted for inflation (BEA, chained 2017 dollars).
Sources and methodology
- U.S. Census Bureau — County population totals and components, Vintage 2024
- U.S. Census Bureau — County estimates 2010–2020
- U.S. Census Bureau — Intercensal estimates 2000–2010
- U.S. Census Bureau — Gazetteer files (land area)
- U.S. Census Bureau — American Community Survey 2020–2024 5-year
- U.S. Bureau of Economic Analysis — Regional economic accounts
- U.S. Bureau of Labor Statistics — LAUS