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COUNTY · 2000 CENSUS

Merrimack County

New Hampshire · 136,225 residents · 933 sq mi
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The short version

With 136,225 people, Merrimack County is a county in New Hampshire. Poverty is uncommon here, at 5.9% of locals. 29% of adults hold a bachelor's degree or higher. The population is up 14% since 1990. Median household income runs $48,522, well clear of the $42,589 US median. Median home value sits at $115,100.

At a glance
Wealthier
above the US median
US median: $42,589
Older
median age 37.7
US median: 35.2
More educated
29% hold a bachelor's degree
US average: 24%
More affordable
home values down 26%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

Total population
136,225
+14%since 1990
from 120,005 in 1990
1990 – 2025
Median age
37.7
+12%since 1990
from 33.5 in 1990
US average: 35.2
Land area
933 sq mi
Population, 1990 – 2024
116K127K138K149K160K19902000201020202024Merrimack County
2024156K
1990201020202024
Age distribution, 2000
Under 56%(8,112)
US avg: 6.8%
5 to 97.1%(9,621)
US avg: 7.3%
10 to 147.6%(10,374)
US avg: 7.3%
15 to 197.1%(9,670)
US avg: 7.2%
20 to 245.3%(7,220)
US avg: 6.7%
25 to 3412.4%(16,902)
US avg: 14.2%
35 to 4418.2%(24,771)
US avg: 16%
45 to 5415.3%(20,800)
US avg: 13.4%
55 to 648.7%(11,832)
US avg: 8.6%
65 to 746.3%(8,547)
US avg: 6.5%
75 to 844.3%(5,852)
US avg: 4.4%
85 and over1.9%(2,524)
US avg: 1.5%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$48,522
+3%inflation adjusted, since 1990
from $35,801 in 1990
US average: $42,589
1990 – 2024
Per capita income
$23,208
+45%since 1990
from $16,057 in 1990
US average: $21,522
Poverty rate
5.9%
+0.4 ptssince 1990
from 5.5% in 1990
US average: 12.4%
Section 03

Housing

Median home value
$115,100
−26%inflation adjusted, since 1990
from $117,500 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$613
−13%inflation adjusted, since 1990
from $534 in 1990
US average: $602
Owner-occupied
69.5%
−0.2 ptssince 1990
from 69.7% in 1990
30.5% rent
Section 04

Race & ethnicity

1990
White, non-Hispanic98.7%(118,430)
Black0.5%(542)
Hispanic / Latino0.6%(773)
Asian0.4%(536)
2000
White, non-Hispanic96.4%(131,343)
Black0.5%(688)
Hispanic / Latino1%(1,362)
Asian0.9%(1,158)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin
Puerto Rican1%(1,617)
Mexican0.5%(773)
Dominican0.2%(269)
Cuban0.1%(199)
Colombian0.1%(168)
Nicaraguan0.1%(124)
Salvadoran0.1%(98)
Peruvian0.1%(82)
Venezuelan0.1%(78)
Spaniard0%(57)
+ 8 more hispanic origin groups with data
Asian origin
Chinese0.2%(364)
Asian Indian0.2%(327)
Filipino0.2%(316)
Vietnamese0.1%(206)
Korean0.1%(183)
Japanese0.1%(140)
Nepalese0.1%(128)
Indonesian0.1%(99)
Burmese0%(61)
Thai0%(43)
Cambodian0%(41)
+ 3 more asian origin groups with data
Kazakh0%(12)
Laotian0%(1)
Pacific Islander origin
Samoan0.1%(123)
Ancestry
Irish20.2%(31,430)
English19.7%(30,792)
French11.6%(18,050)
German9%(14,066)
Italian8.1%(12,677)
French Canadian6.6%(10,365)
American4.9%(7,718)
Scottish4.1%(6,388)
Polish3.4%(5,266)
Swedish2%(3,068)
Dutch1.1%(1,704)
Greek1%(1,632)
+ 44 more ancestry groups with data
Scotch-Irish1%(1,605)
Portuguese0.8%(1,285)
Canadian0.8%(1,248)
Russian0.8%(1,205)
Welsh0.7%(1,142)
Norwegian0.6%(951)
Arab0.6%(890)
British0.5%(782)
Ukrainian0.5%(752)
Lithuanian0.4%(662)
Lebanese0.4%(639)
Finnish0.3%(486)
Hungarian0.3%(422)
Slovak0.3%(407)
Danish0.3%(403)
West Indian0.3%(392)
Austrian0.2%(291)
Czech0.2%(267)
Armenian0.2%(262)
Swiss0.2%(261)
Belgian0.1%(206)
Jamaican0.1%(206)
Romanian0.1%(169)
Serbian0.1%(156)
Australian0.1%(114)
Haitian0.1%(97)
Egyptian0.1%(94)
Nigerian0.1%(80)
Turkish0.1%(80)
Latvian0%(74)
Israeli0%(70)
Syrian0%(68)
Croatian0%(65)
Brazilian0%(59)
Ethiopian0%(59)
Slovene0%(56)
Barbadian0%(29)
Ghanaian0%(28)
Iraqi0%(19)
Bulgarian0%(12)
Section 05

Education

Bachelor's degree or higher
29.1%
+3.7 ptssince 1990
from 25.4% in 1990
US average: 24.4%
High school or higher
88.2%
+5.0 ptssince 1990
from 83.2% in 1990
US average: 80.3%
Graduate degree
10.3%
+1.7 ptssince 1990
from 8.7% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
16.8 min
−24%since 1990
from 22.3 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status
Men 15+
Never married25.5%(13,405)
Married62.2%(32,657)
Widowed2.3%(1,182)
Divorced10.1%(5,283)
Women 15+
Never married21.5%(11,988)
Married56.4%(31,367)
Widowed10.2%(5,679)
Divorced11.9%(6,621)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2000
Section 09

Health coverage

Showing 2024 (the nearest year with coverage data).

Uninsured
5.1%
−4.7 ptssince 2013
from 9.8% in 2013
US average: 8.4%
Employer-based
63.5%
−2.4 ptssince 2020
from 65.9% in 2020
US average: 54.8%
Direct-purchase
14.1%
+1.3 ptssince 2020
from 12.8% in 2020
US average: 13.8%
Medicare
21.6%
+1.1 ptssince 2020
from 20.5% in 2020
US average: 18.4%
Medicaid
14.1%
+1.3 ptssince 2020
from 12.8% in 2020
US average: 20.9%
VA health care
2.7%
+0.3 ptssince 2020
from 2.4% in 2020
US average: 2.2%
Any private
75.6%
−1.2 ptssince 2020
from 76.8% in 2020
US average: 67.1%
Any public
34.3%
+2.4 ptssince 2020
from 31.9% in 2020
US average: 36.7%

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, 2024
Gulf War (2001 or later)22.1%(2,277)
US avg: 26.4%
Gulf War (1990s)19.7%(2,028)
US avg: 24.3%
Vietnam era35.7%(3,671)
US avg: 33.1%
Korean War4.1%(418)
US avg: 4.5%
World War II0.7%(76)
US avg: 1%

Share of the 10,295 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+91%
Home value$374,900+226%
Population65,147−59%
SEE FULL COMPARISON →
MERRIMACK COUNTY VS
Hillsborough County
Income$103,545+113%
Home value$421,100+266%
Population433,415+174%
SEE FULL COMPARISON →
MERRIMACK COUNTY VS
Sullivan County
Income$80,858+67%
Home value$268,700+133%
Population43,961−72%
SEE FULL COMPARISON →
MERRIMACK COUNTY VS
Strafford County
Income$88,570+83%
Home value$362,800+215%
Population135,043−15%
SEE FULL COMPARISON →
Frequently asked

How many people live in Merrimack County, New Hampshire?

Merrimack County, New Hampshire has about 136,225 residents according to the 2000 Census.

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

The typical household in Merrimack County, New Hampshire earns about $48,522 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 $115,100, and the typical rent is about $613 a month.

How educated are people in Merrimack County, New Hampshire?

About 29.1% 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 5.9% 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 16,220 residents, a change of about 14 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 →