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COUNTY · 2020 ACS

Merrimack County

New Hampshire · 153,808 residents · 933 sq mi
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The short version

Merrimack County is home to 153,808 people in New Hampshire. At a median age of 43.4, this is an older place than the country as a whole. 72% of homes are owner-occupied. The foreign-born share is 5%. The poverty rate is 6.6%, under the national 12.8%. The population is up 13% since 2000.

At a glance
Wealthier
above the US median
US median: $66,278
Older
median age 43.4
US median: 38.8
Average education
36% hold a bachelor's degree
US average: 33%
Less affordable
home values up 42%, inflation adjusted
US median home: $265,253
Section 01

Population & growth

Total population
153,808
+13%since 2000
from 136,225 in 2000
1990 – 2025
Median age
43.4
+15%since 2000
from 37.7 in 2000
US average: 38.8
Land area
933 sq mi
Population, 1990 – 2024
116K127K138K149K160K19902000201020202024Merrimack County
2024156K
1990201020202024
Age distribution, 2020
Under 54.4%(6,727)
US avg: 5.6%
5 to 95%(7,746)
US avg: 6.1%
10 to 145.6%(8,686)
US avg: 6.5%
15 to 195.9%(9,146)
US avg: 6.6%
20 to 246.6%(10,228)
US avg: 6.7%
25 to 3412%(18,510)
US avg: 13.5%
35 to 4412%(18,517)
US avg: 12.7%
45 to 5413%(20,002)
US avg: 12.3%
55 to 6415.8%(24,362)
US avg: 13.1%
65 to 7411.9%(18,240)
US avg: 10%
75 to 845.4%(8,370)
US avg: 4.9%
85 and over2.1%(3,274)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$77,937
+7%inflation adjusted, since 2000
from $48,522 in 2000
US average: $66,278
1990 – 2024
Per capita income
$38,213
+65%since 2000
from $23,208 in 2000
US average: $35,364
Households earning $100K+
51.8%
+11.5 ptssince 2009
from 40.3% in 2009
US average: 43.9%
Poverty rate
6.6%
+0.7 ptssince 2000
from 5.9% in 2000
US average: 12.8%
Workforce by industry, 2020
Information11.5%
US avg: 11.1%
Retail trade9.5%
US avg: 10%
Wholesale trade7.2%
US avg: 6.7%
Other services6.2%
US avg: 6.6%
Public administration4.9%
US avg: 4.7%
Finance & insurance3.2%
US avg: 5.5%
Transportation & warehousing3.2%
US avg: 2.5%
Professional, scientific, technical2.6%
US avg: 4.7%
Arts, entertainment, food1.9%
US avg: 2%
Agriculture, forestry, fishing0.8%
US avg: 1.7%
Construction0.7%
US avg: 1.2%
Education & health services0.5%
US avg: 0.8%
Manufacturing0.1%
US avg: 0.5%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$245,400
+42%inflation adjusted, since 2000
from $115,100 in 2000
US average: $265,253
1990 – 2024
Median gross rent
$1,066
+16%inflation adjusted, since 2000
from $613 in 2000
US average: $1,124
Owner-occupied
71.6%
+2.1 ptssince 2000
from 69.5% in 2000
28.4% rent
Persons per household
2.43 people
−4%since 2009
from 2.53 people in 2009
US average: 2.61
Afford Score
3.1
−19%since 2009
from 3.9 in 2009
2009 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04

Race & ethnicity

2000
White, non-Hispanic96.4%(131,343)
Black0.5%(688)
Hispanic / Latino1%(1,362)
Asian0.9%(1,158)
Other0%
2020
White, non-Hispanic89.2%(137,252)
Black1.6%(2,536)
Hispanic / Latino2.5%(3,880)
Asian2%(3,013)
Other2.3%(3,527)
Segregation Score
28
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Puerto Rican0.8%(1,185)
Mexican0.4%(651)
Spaniard0.2%(270)
Cuban0.1%(189)
Dominican0.1%(182)
Uruguayan0.1%(121)
Nicaraguan0.1%(113)
Peruvian0.1%(109)
Salvadoran0.1%(99)
Honduran0%(64)
+ 7 more hispanic origin groups with data
Asian origin
Chinese0.5%(702)
Nepalese0.4%(617)
Asian Indian0.3%(458)
Filipino0.2%(301)
Vietnamese0.1%(222)
Korean0.1%(192)
Cambodian0.1%(143)
Japanese0.1%(99)
Taiwanese0.1%(80)
Bhutanese0%(38)
Laotian0%(29)
+ 4 more asian origin groups with data
Pakistani0%(26)
Burmese0%(15)
Thai0%(4)
Pacific Islander origin
Chamorro0%(20)
Samoan0%(4)
Ancestry
Irish18.5%(27,966)
English17.2%(25,917)
French13.4%(20,165)
German8.9%(13,375)
French Canadian8.7%(13,123)
Italian8.2%(12,448)
American4.9%(7,453)
Scottish4.1%(6,233)
Polish3.9%(5,840)
Swedish2.4%(3,548)
Scotch-Irish1.3%(1,955)
Canadian1.1%(1,634)
+ 43 more ancestry groups with data
Greek1.1%(1,604)
Dutch1%(1,472)
Welsh1%(1,446)
British0.9%(1,407)
Norwegian0.9%(1,372)
Portuguese0.9%(1,362)
Russian0.8%(1,245)
Lithuanian0.6%(935)
Ukrainian0.4%(652)
Lebanese0.4%(577)
Hungarian0.3%(506)
Danish0.3%(468)
Finnish0.3%(464)
Czech0.2%(307)
Austrian0.2%(290)
Swiss0.2%(278)
West Indian0.2%(262)
Serbian0.2%(252)
Belgian0.1%(201)
Armenian0.1%(193)
Croatian0.1%(173)
Slovak0.1%(161)
Ghanaian0.1%(153)
Romanian0.1%(136)
Jamaican0.1%(122)
Syrian0.1%(98)
Turkish0.1%(81)
Bulgarian0.1%(79)
Latvian0%(75)
Slovene0%(75)
Ethiopian0%(62)
Egyptian0%(46)
Brazilian0%(38)
Haitian0%(35)
Iranian0%(25)
Barbadian0%(22)
Kenyan0%(8)
Section 05

Education

Bachelor's degree or higher
35.8%
+6.7 ptssince 2000
from 29.1% in 2000
US average: 32.9%
High school or higher
93.1%
+5.0 ptssince 2000
from 88.2% in 2000
US average: 88.5%
Graduate degree
15.5%
+5.1 ptssince 2000
from 10.3% in 2000
US average: 12.7%
Section 06

Commute & transportation

Average commute
27.1 min
+61%since 2000
from 16.8 min in 2000
US average: 26.9
Drive alone to work
80.6%
−0.6 ptssince 2009
from 81.2% in 2009
US average: 75.1%
No vehicle available
5.5%
+0.5 ptssince 2009
from 5.0% in 2009
US average: 8.4%
Section 07

Work & employment

Unemployment rate
3.5%
−2.4 ptssince 2011
from 5.8% in 2011
US average: 5.4%
Labor force participation
65.6%
−3.4 ptssince 2011
from 68.9% in 2011
US average: 63.4%
Women 20-64 in the labor force
78.0%
US average: 73.3%
Management & professional
41.1%
+2.6 ptssince 2009
from 38.5% in 2009
US average: 39.3%
Section 08

People & community

Male
49.2%
−0.4 ptssince 2009
from 49.5% in 2009
Female
50.8%
+0.4 ptssince 2009
from 50.5% in 2009
Foreign born
5.4%
+1.9 ptssince 2009
from 3.5% in 2009
US average: 13.5%
Uninsured
5.8%
−4.0 ptssince 2013
from 9.8% in 2013
US average: 8.8%
Computer in household
92.9%
US average: 91.9%
Same house as last year
87.8%
US average: 86.2%
Marital status (2024)
Men 15+
Never married33.2%(21,848)
Married52.2%(34,425)
Widowed2.8%(1,869)
Divorced11.8%(7,751)
Women 15+
Never married26%(17,358)
Married52.6%(35,196)
Widowed7.7%(5,120)
Divorced13.8%(9,209)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09

Health coverage

Uninsured
5.8%
−4.0 ptssince 2013
from 9.8% in 2013
US average: 8.8%
Employer-based
65.9%
US average: 55.4%
Direct-purchase
12.8%
US average: 13.7%
Medicare
20.5%
US average: 17.6%
Medicaid
12.8%
US average: 20.0%
VA health care
2.4%
US average: 2.3%
Any private
76.8%
US average: 68.1%
Any public
31.9%
US average: 35.2%

Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.

Section 09 · Service history

Veterans

Veterans by period of service, 2020
Gulf War (2001 or later)14.2%(1,475)
US avg: 20.6%
Gulf War (1990s)20.3%(2,108)
US avg: 21.4%
Vietnam era34.4%(3,560)
US avg: 35.2%
Korean War8.6%(892)
US avg: 7.6%
World War II3.1%(319)
US avg: 2.9%

Share of the 10,360 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.

BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper

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Head to head

Compare Merrimack County to nearby counties

MERRIMACK COUNTY VS
Belknap County
Income$92,783+19%
Home value$374,900+53%
Population65,147−59%
SEE FULL COMPARISON →
MERRIMACK COUNTY VS
Hillsborough County
Income$103,545+33%
Home value$421,100+72%
Population433,415+174%
SEE FULL COMPARISON →
MERRIMACK COUNTY VS
Sullivan County
Income$80,858+4%
Home value$268,700+9%
Population43,961−72%
SEE FULL COMPARISON →
MERRIMACK COUNTY VS
Strafford County
Income$88,570+14%
Home value$362,800+48%
Population135,043−15%
SEE FULL COMPARISON →
Frequently asked

How many people live in Merrimack County, New Hampshire?

Merrimack County, New Hampshire has about 153,808 residents according to the 2020 American Community Survey.

What is the median household income in Merrimack County, New Hampshire?

The typical household in Merrimack County, New Hampshire earns about $77,937 a year. Half of households make more than that, and half make less.

Is Merrimack County, New Hampshire expensive?

In Merrimack County, New Hampshire, the median home is worth about $245,400, and the typical rent is about $1,066 a month.

How educated are people in Merrimack County, New Hampshire?

About 35.8% of adults age 25 and over in Merrimack County, New Hampshire hold a bachelor's degree or higher.

What is the poverty rate in Merrimack County, New Hampshire?

About 6.6% of people in Merrimack County, New Hampshire live below the federal poverty line.

Has Merrimack County, New Hampshire grown since 1990?

Yes, Merrimack County, New Hampshire has grown since 1990. The population has added about 33,803 residents, a change of about 28 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →