Merrimack, New Hampshire Population 2024

31,403

Merrimack is a city located in Hillsborough County New Hampshire. Merrimack has a 2024 population of 31,403. Merrimack is currently growing at a rate of 4.69% annually and its population has increased by 17.03% since the most recent census, which recorded a population of 26,833 in 2020.

The average household income in Merrimack is $137,588 with a poverty rate of 4.02%. The median age in Merrimack is 41.8 years: 40.3 years for males, and 43.8 years for females.

Merrimack Demographics

According to the most recent ACS, the racial composition of Merrimack was:

  • White: 89.36%
  • Asian: 4.55%
  • Two or more races: 3.26%
  • Other race: 1.59%
  • Black or African American: 1.24%
  • Native Hawaiian or Pacific Islander: 0.01%
  • Native American: 0%
Land Area (mi²)
32.6 sq mi
Density (mi²)
963.50/sq mi
Growth Since 2020
17.03% (4,570)
The current population of Merrimack, New Hampshire is 31,403 based on our projections of the latest US Census estimates (released May 2024). The last official US Census in 2020 recorded the population at 26,833.

Population by Race

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Race
Population
Percentage (of total)
White24,29489.36%
Asian1,2384.55%
Two or more races8853.26%
Other race4311.59%
Black or African American3371.24%
Native Hawaiian or Pacific Islander20.01%
Native American00%

White

Asian

Two or more races

Other race

Black or African American

Native Hawaiian or Pacific Islander

Native American

Merrimack Population by Race

Merrimack Population Pyramid 2024

Merrimack Median Age

41.8

Total

40.3

Male

43.8

Female

Merrimack Adults

There are 21,119 adults, (4,563 of whom are seniors) in Merrimack.

Merrimack Age Dependency

64.2

Age Dependency Ratio

27.6

Old Age Dependency Ratio

36.7

Child Dependency Ratio

Merrimack Sex Ratio

Female13,32749.02%
Male13,86050.98%

Merrimack Population by Age

Merrimack Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All10,2342.6488.911.1
Married6,1783.1194.25.8
Non Family2,7581.2678.221.8
Female9893.4785.914.1
Male3092.9686.413.6

3.05

Average Family Size

2.64

Average Household Size

88.9%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Merrimack Households and Families

Male

Female

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Education Attained
Count
Percentage
9th to 12th Grade5672.93%
Associates Degree2,42312.54%
Bachelors Degree5,59728.97%
Graduate Degree3,61618.72%
High School Graduate3,44317.82%
Less Than 9th Grade2211.14%
Some College3,45217.87%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Merrimack Educational Attainment by Sex (over 25)

Merrimack Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
White16,97816,2527,861
Asian817817786
Hispanic721659293
2+ Races596596245
Black33627989
Other Race19519085
Islander222

The highest rate of high school graduation is among asian people with a rate of 100%.

The highest rate of bachelors degrees is among islander people with a rate of 100%.

Merrimack Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Bachelors Degree$74,257$90,077$64,710
Graduate Degree$85,447$111,250$78,636
High School Graduate$56,204$62,813$45,148
Less Than 9th Grade$32,344$41,974$31,563
Overall$67,500$80,753$57,512
Some College$57,178$72,424$45,307

$67,500

Average Earnings

$80,753

Average Male

$57,512

Average Female

Merrimack Earnings by Educational Attainment

Merrimack Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Merrimack Language

92.72% of Merrimack residents speak only English, while 7.28% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 3.94% of the population.

Merrimack Language

Merrimack Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White23,3068483.64%
Hispanic1,32219614.83%
Black3368725.89%
Multiple885121.36%
Other43051.16%

4.02%

Overall Poverty Rate

4.73%

Male Poverty Rate

3.28%

Female Poverty Rate

Poverty in Merrimack

The race most likely to be in poverty in Merrimack is Black, with 25.89% below the poverty level.

The race least likely to be in poverty in Merrimack is Other, with 1.16% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.05%. Among those working part-time, it was 4.3%, and for those that did not work, the poverty rate was 12.25%.

Merrimack Poverty

rate

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Rate
Poverty
High School11.09%
Less Than 9th Grade10.91%
Some College3.34%
Bachelors or Greater1.32%

Merrimack Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed22.45%
Female Unemployed12.69%
Male Employed1.55%
Female Employed1.2%

Merrimack Poverty Rate by Employment Status and Sex

Merrimack Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Families$135,426$153,079
Households$121,489$137,588
Married Families$143,354$-999,999,999
Non Families$72,898$87,426

mean

median

Income by Household Type

Merrimack Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

57.0%

Overall Marriage Rate

59.3%

Male Marriage Rate

54.6%

Female Marriage Rate

Merrimack Married by Age and Sex

male

female

Merrimack Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

Merrimack Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Merrimack Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,486

Number of Veterans

1,357

Male Veterans

129

Female Veterans

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War
Veterans
Vietnam719
Second Gulf War249
First Gulf War177
Korea105
World War II10

Merrimack Veterans by War

count

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Age Group
Veterans
65 to 74612
75+393
18 to 34170
55 to 64156
35 to 54155

Merrimack Veterans by Age

count

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Name
Veterans
% of Total
White1,4247.5%
2+ Races628.64%

Merrimack Veterans by Race

Merrimack Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.99%

Veteran Poverty Rate

20.39%

Veteran Disability Rate

Merrimack Veterans by Education

LaborForceParticipation

72.5%

Labor Force Participation

70%

Employment Rate

3.3%

Unemployment Rate

Merrimack Employment by Age

LaborForceParticipation

Merrimack Employment by Race

LaborForceParticipation

Merrimack Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

39.78%

Born in Merrimack

93.53%

Native Born

6.47%

Foreign Born

1.47%

Non Citizen

4.99%

Naturalized

Place of Birth

93.53% of Merrimack residents were born in the United States, with 39.78% having been born in New Hampshire. 1.47% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Merrimack Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202938,4381,4073.8%
202837,0311,4073.95%
202735,6241,4074.11%
202634,2171,4074.29%
202532,8101,4074.48%
202431,4031,4074.69%
202329,9961,4074.92%
202228,5891,4075.18%
202127,1823491.3%
202026,8332951.11%
201926,5385372.07%
201826,001720.28%
201725,929920.36%
201625,837830.32%
201525,754370.14%
201425,717680.27%
201325,649530.21%
201225,596300.12%
201125,566590.23%
201025,50700%

Merrimack Population by Year