County · New Hampshire

Coos County, New Hampshire

Coos County, New Hampshire. Coos County had 31,343 residents in 2025 by the Census Bureau's estimate, up 0.2% since 2020, slower than New Hampshire (+2.7%). It holds 26 places (1 city, village or borough, 19 towns and townships and 6 census-designated) and 11 census tracts. GEOID 33007.

Residents, July 2025 estimate

31,343

Census Bureau estimate (no margin published)
2020 Census count: 31,268 · ACS 2020-2024: 31,271

Median household income

$57,677

±$2,622 (90% margin)
New Hampshire: $99,031

Median home value

$188,900

±$13,490 (90% margin)
New Hampshire: $402,500

Median gross rent

$876

±$41 (90% margin)
New Hampshire: $1,491

How many people live in Coos County, and is it growing?

The 2020 Census counted 31,268 residents in Coos County. The Census Bureau estimates 31,343 for July 1, 2025, up 0.2% since 2020, slower than New Hampshire (+2.7%). The 2020-2024 American Community Survey puts the population at 31,271 over 1,795 square miles of land.

July 2020→2021 +167 (31,402)
2021→2022 +42 (31,444)
2022→2023 −197 (31,247)
2023→2024 +130 (31,377)
2024→2025 −34 (31,343)

Coos County in New Hampshire. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	Coos County	New Hampshire	Change since 2015-2019
Total population	31,271	1,394,868	−470
Households	14,002±321	555,822	no clear change
Average household size	2.08±0.05	2.44	no clear change
Housing units	20,637±72	648,472	−957

Coos County's population since 2000

From 33,111 in 2000 to 31,343 in 2025: down 5.3%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

2000 Census 33,111
2005 (estimate) 33,845
2010 Census 33,055
2015 (estimate) 32,351
2020 Census 31,268
2025 (estimate) 31,343

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in Coos County?

Coos County holds 26 places: 1 city, village or borough (an incorporated place), 19 towns and townships (county subdivisions with their own government) and 6 census-designated places. The largest is Berlin with 9,502 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Coos County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

Berlin	city	9,425	9,383±48	$45,180	$131,000	15.3%	100%
Lancaster	town	3,218	3,216±21	$68,911	$215,700	16.7%	100%
Gorham	town	2,698	2,682±23	$61,275	$161,600	4.3%	100%
Whitefield	town	2,490	2,516±22	$63,125	$240,400	11.0%	100%
Northumberland	town	2,126	1,815±221	$40,268	$120,100	23.1%	100%
Colebrook	town	2,084	1,988±268	$51,159	$192,200	13.3%	100%
Lancaster CDP	CDP	1,941	2,230±247	$66,765	$200,500	19.2%	100%
Gorham CDP	CDP	1,851	2,092±214	$62,679	$146,300	5.5%	100%
Whitefield CDP	CDP	1,460	1,512±205	$61,429	$195,400	12.7%	100%
Milan	town	1,358	1,334±144	$70,300	$259,400	6.7%	100%
Colebrook CDP	CDP	1,201	1,268±247	$46,833	$156,700	15.1%	100%
Groveton	CDP	1,068	834±207	$37,321	$104,700	27.1%	100%
Jefferson	town	1,043	1,013±138	$67,188	$296,700	8.7%	100%
Dalton	town	933	916±255	$81,429	$191,400	19.7%	100%
Carroll	town	820	659±132	$64,821	$261,500	5.5%	100%
Stewartstown	town	813	960±204	$57,069	$210,400	17.7%	100%
Pittsburg	town	800	683±133	$58,250	$292,800	4.8%	100%
Stratford	town	662	950±264	$49,583	$161,100	23.3%	100%
Columbia	town	659	683±145	$57,917	$196,400	10.7%	100%
Stark	town	478	419±87	$71,750	$197,700	8.3%	100%
Shelburne	town	353	530±120	$93,125	$280,200	5.5%	100%
Randolph	town	328	420±76	$101,750	$407,000	6.7%	100%
Dummer	town	306	299±61	$91,250	$242,200	9.0%	100%
ErrolGEOID 3300725140	town	298	314±93	$62,500	$275,000	7.6%	100%
Clarksville	town	294	371±105	$65,385	$191,700	15.9%	100%
West StewartstownGEOID 3383620	CDP	263	312±177	$80,167	$27,600	9.8%	100%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Coos County?

The median resident of Coos County is 50.3 years old; 16.0% are under 18 and 26.1% are 65 or older. The largest group is non-Hispanic white residents at 91.9%, then non-Hispanic residents of two or more races at 2.9%. 2.8% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	Coos County	New Hampshire	Change since 2015-2019
Median age	50.3±0.3	43.3	+2.1
Under 18 years	16.0%±0.1 pts	18.2%	–
65 years and over	26.1%±0.3 pts	20.1%	–
Hispanic or Latino (any race)	2.4%	4.7%	no clear change
White alone, not Hispanic	91.9%±0.9 pts	86.9%	no clear change
Black or African American alone, not Hispanic	2.0%±0.6 pts	1.3%	no clear change
Asian alone, not Hispanic	0.1%±0.1 pts	2.6%	–
American Indian and Alaska Native alone, not Hispanic	0.1%±0.1 pts	0.1%	–
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.0%±0.1 pts	0.0%	–
Two or more races, not Hispanic	2.9%±0.8 pts	4.0%	–
Some other race alone, not Hispanic	0.5%±0.3 pts	0.4%	–
Born outside the United States	2.8%±0.4 pts	6.1%	no clear change
Speak a language other than English at home (age 5+)	7.6%±1.0 pts	7.9%	–
Civilian veterans (age 18+)	10.3%±1.1 pts	7.6%	–
With a disability	21.9%±1.7 pts	13.3%	–
No health insurance coverage	7.7%±1.1 pts	5.3%	no clear change
High school graduate or higher (age 25+)	90.4%±1.2 pts	94.4%	–
Bachelor's degree or higher (age 25+)	20.1%±1.5 pts	40.6%	no clear change
Graduate or professional degree (age 25+)	7.0%±1.0 pts	16.1%	–
Moved from another state in the past year	3.2%±0.6 pts	3.6%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Coos County earn?

Half of Coos County's 14,002 households earn less than $57,677 a year (±$2,622), against $99,031 in New Hampshire. In 2015-2019 it was $57,987 in 2024 dollars; the margins of error cannot tell the two periods apart. 13.2% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	Coos County	New Hampshire	Change since 2015-2019
Median household income	$57,677±$2,622	$99,031	no clear change
Mean household income	$83,445±$7,060	$128,322	–
Per capita income	$37,679±$3,169	$52,798	+$3,967
People below the poverty line	13.2%±1.5 pts	7.2%	no clear change
Children under 18 below the poverty line	16.3%±5.3 pts	7.9%	no clear change
Households receiving SNAP	12.6%±2.1 pts	6.1%	–
Households with a broadband subscription	86.4%±1.8 pts	92.9%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Coos County?

Owners occupy 74.2% of Coos County's occupied homes and renters 25.8%. The median owner-occupied home is valued at $188,900 by its owner (±$13,490). The median renter pays $876 a month including utilities, and 35.7% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	Coos County	New Hampshire	Change since 2015-2019
Median home value (owner-occupied)	$188,900±$13,490	$402,500	+$31,371
Median gross rent	$876±$41	$1,491	no clear change
Renters paying 35% or more of income on rent	35.7%±5.5 pts	38.4%	no clear change
Median monthly owner costs, with a mortgage	$1,464±$57	$2,367	–
Owner-occupied homes	74.2%±2.2 pts	72.8%	+3.5 pts
Housing units	20,637±72	648,472	−957
Homeowner vacancy rate	1.6%±1.1 pts	0.4%	–
Rental vacancy rate	3.0%±1.8 pts	4.0%	–
Single-family detached homes	68.4%±1.9 pts	63.3%	–
Mobile homes	10.1%±1.0 pts	5.2%	–
Built 2020 or later	0.6%±0.2 pts	1.3%	–
Built 1939 or earlier	29.3%±1.7 pts	18.6%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Coos County building?

Builders took permits for 150 new housing units across Coos County in 2025 (88 single-family), 4.8 per 1,000 residents.

2019 88 units
2020 73 units
2021 99 units
2022 124 units
2023 93 units
2024 115 units
2025 150 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Coos County get to work?

75.9% of Coos County's workers drive alone and 8.0% work from home. The average trip to work takes 23.1 minutes. The unemployment rate in 2020-2024 averaged 4.3%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	Coos County	New Hampshire	Change since 2015-2019
In the labor force (age 16+)	52.9%±1.7 pts	66.3%	–
Unemployment rate	4.3%±1.3 pts	3.3%	no clear change
Drove alone to work	75.9%±2.3 pts	72.0%	–
Carpooled	9.7%±1.6 pts	7.0%	–
Public transportation	0.1%±0.1 pts	0.5%	–
Walked	3.9%±1.1 pts	2.3%	–
Worked from home	8.0%±1.3 pts	16.8%	no clear change
Mean travel time to work	23.1 min±1.4	26.7 min	no clear change

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Coos County's census tracts?

Coos County is divided into 11 census tracts. Among those with a reliable estimate, median household income runs from $29,625 (Tract 9506) to $73,365 (Tract 9510).

Census tracts of Coos County, ACS 2020-2024 5-year estimates; sort by any column

Tract 950133007950100	West Stewartstown (5%)	1,907	2,014±231	$59,250	$258,700	not published	12.8%
Tract 950233007950200	Colebrook (23%)	2,743	2,671±280	$52,255	$193,500	$789	12.6%
Tract 950333007950300	–	2,040	1,988±176	$70,231	$259,400	$875	7.3%
Tract 950433007950400	Groveton (12%)	3,267	3,184±240	$45,938	$136,100	$975	21.2%
Tract 950533007950500	Lancaster (43%)	3,218	3,216±21	$68,911	$215,700	$1,019	16.7%
Tract 950633007950600	Berlin	4,135	4,659±297	$29,625	$118,400	$575	21.5%
Tract 950733007950700	Berlin	3,089	2,742±278	$47,389	$145,600	$949	5.9%
Tract 950833007950800	Berlin	2,201	1,982±264	$54,524	$124,800	$1,020	17.2%
Tract 950933007950900	Gorham (30%)	3,053	3,246±122	$64,127	$196,400	$855	5.2%
Tract 951033007951000	–	2,192	2,137±186	$73,365	$290,200	$1,058	7.1%
Tract 951133007951100	Whitefield (21%)	3,423	3,432±256	$66,821	$228,600	$1,069	13.4%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Coos County compare with New Hampshire's other counties?

Coos County's rank among New Hampshire's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	10th of 10
Growth 2020-2025	10th of 10
Residents per square mile	10th of 10
Median household income	10th of 10
Median home value	10th of 10
Median gross rent	10th of 10
Poverty rate	1st of 10
Bachelor's degree or higher	10th of 10
Median age	2nd of 10

Every county in New Hampshire

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for Coos County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.