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COUNTY

Merrimack County

New Hampshire · 158,078 residents (2025 est.) · 932.899 sq mi
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The short version

Merrimack County is wealthier than most US places, with a median household income of $97,004. Population has held roughly steady since 2000. Median home value has roughly tripled since 2000, reaching $367,600. It ranks in the top 5% of US counties for household income.

At a glance
Wealthier
above the US median
US median: $82,259
Older
median age 42.9
US median: 38.9
Average education
39% hold a bachelor's degree
US average: 36%
Less affordable
home values up 75%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
155,967
+14%since 2000
from 136,225 in 2000
1990 – 2025
Population density
167 / sq mi
+5%since 2009
from 159 / sq mi in 2009
US average: 281
Median age
42.9
+14%since 2000
from 37.7 in 2000
US average: 38.9

PEP 2025 EST:158,078 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
116K127K138K149K160K1990201020202024Merrimack County
2024156K
1990201020202024
Age distribution, 2024
Under 54.4%(6,936)
US avg: 5.6%
5 to 94.8%(7,506)
US avg: 6%
10 to 145.6%(8,749)
US avg: 6.4%
15 to 196.3%(9,854)
US avg: 6.6%
20 to 246.1%(9,579)
US avg: 6.5%
25 to 3412.7%(19,806)
US avg: 13.7%
35 to 4412.8%(19,988)
US avg: 13.2%
45 to 5412.3%(19,245)
US avg: 12.2%
55 to 6414.9%(23,243)
US avg: 12.7%
65 to 7412.2%(19,048)
US avg: 10.2%
75 to 845.8%(9,016)
US avg: 5.1%
85 and over1.9%(2,997)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$97,004
+10%inflation adjusted, since 2000
from $48,522 in 2000
US average: $82,259
1990 – 2024
Per capita income
$49,044
+111%since 2000
from $23,208 in 2000
US average: $44,673
Households earning $100K+
61.1%
+20.8 ptssince 2009
from 40.3% in 2009
US average: 53.3%
Poverty rate
7.6%
+1.7 ptssince 2000
from 5.9% in 2000
US average: 12.5%
Income inequality (Gini)
0.440
+6%since 2010
from 0.417 in 2010
US average: 0.476
Workforce by industry, 2024
Information12%
US avg: 10.8%
Retail trade9.4%
US avg: 9.9%
Wholesale trade7.3%
US avg: 6.9%
Other services5.4%
US avg: 6.7%
Public administration4.4%
US avg: 4.8%
Finance & insurance3.4%
US avg: 5.9%
Transportation & warehousing2.8%
US avg: 2.2%
Professional, scientific, technical2.7%
US avg: 5.1%
Arts, entertainment, food1.9%
US avg: 1.9%
Agriculture, forestry, fishing1%
US avg: 1.6%
Construction0.9%
US avg: 1.2%
Education & health services0.7%
US avg: 0.9%
Manufacturing0.1%
US avg: 0.4%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$367,600
+75%inflation adjusted, since 2000
from $115,100 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,360
+22%inflation adjusted, since 2000
from $613 in 2000
US average: $1,442
Owner-occupied
73.5%
+4.0 ptssince 2000
from 69.5% in 2000
26.5% rent
Vacancy rate
8.4%
−1.0 ptssince 2009
from 9.4% in 2009
US average: 10.0%
Owner cost-burdened
24.3%
−12.2 ptssince 2009
from 36.5% in 2009
US average: 22.9%
Renter cost-burdened
42.9%
−1.6 ptssince 2009
from 44.5% in 2009
US average: 47.4%
Afford Score
3.8
−3%since 2009
from 3.9 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
Gentrification Score
44
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
RELATED:See current rent listings in Merrimack County on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic96.4%(131,343)
Black0.5%(688)
Hispanic / Latino1%(1,362)
Asian0.9%(1,158)
Other0%
2024
White, non-Hispanic90.1%(140,561)
Black1.6%(2,471)
Hispanic / Latino2.7%(4,277)
Asian1.5%(2,358)
Other4%(6,300)
Diversity Score
23
+98%since 2009
from 12 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Segregation Score
24
−16%since 2020
from 28 in 2020
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 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)
RANKED:Largest Irish population · Largest English population · Largest French population · Largest German population · Largest Italian population
Section 05

Education

Bachelor's degree or higher
38.9%
+9.8 ptssince 2000
from 29.1% in 2000
US average: 35.6%
High school or higher
94.5%
+6.3 ptssince 2000
from 88.2% in 2000
US average: 89.6%
Graduate degree
16.2%
+5.8 ptssince 2000
from 10.3% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
26.6 min
+58%since 2000
from 16.8 min in 2000
US average: 26.5
Drive alone to work
73.1%
−8.0 ptssince 2009
from 81.2% in 2009
US average: 68.9%
Carpooled to work
8.2%
−0.3 ptssince 2009
from 8.5% in 2009
US average: 8.5%
Public transit
0.2%
−0.2 ptssince 2009
from 0.4% in 2009
US average: 3.2%
Worked from home
14.4%
+9.3 ptssince 2009
from 5.1% in 2009
US average: 15.0%
Walked to work
2.8%
−0.7 ptssince 2009
from 3.5% in 2009
US average: 2.4%
Biked to work
0.2%
Unchangedsince 2009
from 0.2% in 2009
US average: 0.4%
No vehicle available
4.2%
−0.8 ptssince 2009
from 5.0% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
3.1%
−2.7 ptssince 2011
from 5.8% in 2011
US average: 5.2%
Labor force participation
64.5%
−4.5 ptssince 2011
from 68.9% in 2011
US average: 63.5%
Self-employed
16.1%
+0.4 ptssince 2009
from 15.8% in 2009
US average: 13.1%
Management & professional
44.4%
−21.1 ptssince 2009
from 65.5% in 2009
US average: 42.5%
Section 08

People & community

Male
49.8%
+0.3 ptssince 2009
from 49.5% in 2009
Female
50.2%
−0.3 ptssince 2009
from 50.5% in 2009
Foreign born
4.4%
+0.9 ptssince 2009
from 3.5% in 2009
US average: 14.1%
Veterans
8.1%
−40.6 ptssince 2009
from 48.7% in 2009
US average: 6.2%
With a disability
14.7%
+2.8 ptssince 2012
from 11.9% in 2012
US average: 13.3%
Uninsured
5.1%
−85.1 ptssince 2013
from 90.2% in 2013
US average: 8.4%
Broadband at home
92.8%
+9.8 ptssince 2017
from 83.0% in 2017
US average: 91.0%
English only at home
94.7%
−0.2 ptssince 2016
from 94.9% in 2016
US average: 77.7%
Spanish at home
1.4%
+0.6 ptssince 2016
from 0.8% in 2016
US average: 13.6%
Marital status
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
Drill deeper

Places similar to Merrimack County

Maui County
Pop 160,592
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Pop 160,240
Columbia County
Pop 169,189
Boone County
Pop 145,316
Places similar to Merrimack County
Head to head

Compare Merrimack County to nearby counties

MERRIMACK COUNTY VS
Belknap County
Income$92,783−4%
Home value$374,900+2%
Population65,147−59%
SEE FULL COMPARISON →
MERRIMACK COUNTY VS
Hillsborough County
Income$103,545+7%
Home value$421,100+15%
Population433,415+174%
SEE FULL COMPARISON →
MERRIMACK COUNTY VS
Sullivan County
Income$80,858−17%
Home value$268,700−27%
Population43,961−72%
SEE FULL COMPARISON →
MERRIMACK COUNTY VS
Strafford County
Income$88,570−9%
Home value$362,800−1%
Population135,043−15%
SEE FULL COMPARISON →
Frequently asked

How many people live in Merrimack County, New Hampshire?

Merrimack County, New Hampshire has about 155,967 residents according to the 2024 American Community Survey.

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

The typical household in Merrimack County, New Hampshire earns about $97,004 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 $367,600, and the typical rent is about $1,360 a month.

How educated are people in Merrimack County, New Hampshire?

About 38.9% 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 7.6% 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 35,962 residents, a change of about 30 percent over that period.

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Explore from here

39 census tracts (top 20 by population)
Census Tract 442Census Tract 400Census Tract 390Census Tract 360Census Tract 328Census Tract 32.01Census Tract 385Census Tract 443Census Tract 440Census Tract 340Census Tract 31Census Tract 30.01Census Tract 430.02Census Tract 329Census Tract 310.01Census Tract 430.01Census Tract 405.02Census Tract 350Census Tract 380Census Tract 310.02
28 ZIP codes
ZIP 03301ZIP 03303ZIP 03106ZIP 03275ZIP 03276ZIP 03235ZIP 03304ZIP 03242ZIP 03229ZIP 03307ZIP 03234ZIP 03257ZIP 03263ZIP 03046ZIP 03278ZIP 03258ZIP 03224ZIP 03221ZIP 03216ZIP 03255ZIP 03287ZIP 03268ZIP 03230ZIP 03260ZIP 03243ZIP 03273ZIP 03233ZIP 03231
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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