Merrimack County, New Hampshire Population 2024

158,878

Merrimack County, New Hampshire's estimated 2024 population is 158,878 with a growth rate of 0.91% in the past year according to the most recent United States census data. Merrimack County, New Hampshire is the 3rd largest county in New Hampshire. The 2010 population was 146,395 and has seen a growth of 8.53% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
2029166,0231,4290.87%
2028164,5941,4290.88%
2027163,1651,4290.88%
2026161,7361,4290.89%
2025160,3071,4290.9%
2024158,8781,4290.91%
2023157,4491,4290.92%
2022156,0201,4290.92%
2021154,5915690.37%
2020154,0222,4161.59%
2019151,6066250.41%
2018150,9819270.62%
2017150,0548080.54%
2016149,2464760.32%
2015148,7705180.35%
2014148,2526970.47%
2013147,5554060.28%
2012147,1492550.17%
2011146,8944990.34%
2010146,395
1990120,00521,70322.08%
198098,30217,37721.47%
197080,92513,14019.38%
196067,7854,7637.56%
195063,0222,3123.81%
194060,7104,5588.12%
193056,1524,3828.46%
192051,770-1,565-2.93%
191053,3359051.73%
190052,4302,9956.06%
189049,4353,1356.77%
188046,3004,1499.84%
187042,1517431.79%
186041,4081,0712.66%
185040,3374,08411.27%
184036,2531,6394.74%
183034,614-131,409-79.15%
showing: 37 rows
2024 Growth Rate
0.91% (1,429)
County Website
Merrimack County
County Seat
2010 Population
146,395
Area
934 mi²
Density
170 people/mi²
Growth Since 2010
8.53% (12,483)
Founded
1823

Merrimack County, New Hampshire Population 2024

Population by Race

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Race
Population
Percentage (of total)
White141,78792.12%
Two or more races5,4573.55%
Asian2,9861.94%
Black or African American2,4511.59%
Other race7990.52%
Native American4070.26%
Native Hawaiian or Pacific Islander310.02%
showing: 7 rows

White

Two or more races

Asian

Black or African American

Other race

Native American

Native Hawaiian or Pacific Islander

Merrimack County, New Hampshire Population by Race

Merrimack County, New Hampshire Population Pyramid 2024

Merrimack County, New Hampshire Median Age

42.8

Total

41.5

Male

44.1

Female

Merrimack County, New Hampshire Adults

There are 125,263 adults, (29,128 of whom are seniors) in Merrimack County, New Hampshire.

Merrimack County, New Hampshire Age Dependency

60.1

Age Dependency Ratio

30.3

Old Age Dependency Ratio

29.8

Child Dependency Ratio

Merrimack County, New Hampshire Sex Ratio

Female77,19550.15%
Male76,72349.85%

Merrimack County, New Hampshire Population by Age

Merrimack County, New Hampshire Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All59,8512.4673.826.2
Married32,4053.0188.411.6
Non Family19,7351.2754.145.9
Female4,5513.1855.544.5
Male3,1603.3172.927.1
showing: 5 rows

2.94

Average Family Size

2.46

Average Household Size

73.8%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Merrimack County, New Hampshire Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Merrimack County, New Hampshire Educational Attainment by Sex (over 25)

Merrimack County, New Hampshire Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among white people with a rate of 94.02%.

The highest rate of bachelors degrees is among asian people with a rate of 53.63%.

Merrimack County, New Hampshire Educational Attainment by Race

All

Male

Female

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$53,756

Average Earnings

$61,753

Average Male

$45,737

Average Female

Merrimack County, New Hampshire Earnings by Educational Attainment

Merrimack County, New Hampshire Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Merrimack County, New Hampshire Language

94.44% of Merrimack County, New Hampshire residents speak only English, while 5.56% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 2.77% of the population.

Merrimack County, New Hampshire Language

Merrimack County, New Hampshire Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White135,3668,9566.62%
Hispanic3,32064119.31%
Multiple5,07063612.54%
Asian2,91445215.51%
Black2,05737118.04%
Native3745013.37%
Other694385.48%
Islander31619.35%
showing: 8 rows

7.25%

Overall Poverty Rate

6.4%

Male Poverty Rate

8.08%

Female Poverty Rate

Poverty in Merrimack County, New Hampshire

The race most likely to be in poverty in Merrimack County, New Hampshire is Islander, with 19.35% below the poverty level.

The race least likely to be in poverty in Merrimack County, New Hampshire is Other, with 5.48% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.63%. Among those working part-time, it was 8.73%, and for those that did not work, the poverty rate was 16.23%.

Merrimack County, New Hampshire Poverty

rate

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Rate
Poverty
Less Than 9th Grade18.73%
High School10.22%
Some College5.54%
Bachelors or Greater3.02%
showing: 4 rows

Merrimack County, New Hampshire Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed26.31%
Male Unemployed15.03%
Female Employed3.44%
Male Employed1.8%
showing: 4 rows

Merrimack County, New Hampshire Poverty Rate by Employment Status and Sex

Merrimack County, New Hampshire Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Merrimack County, New Hampshire Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

51.9%

Overall Marriage Rate

51.4%

Male Marriage Rate

52.4%

Female Marriage Rate

Merrimack County, New Hampshire Married by Age and Sex

male

female

Merrimack County, New Hampshire Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.

Merrimack County, New Hampshire Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Merrimack County, New Hampshire Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

10,221

Number of Veterans

9,371

Male Veterans

850

Female Veterans

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Merrimack County, New Hampshire Veterans by War

count

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Merrimack County, New Hampshire Veterans by Age

count

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Merrimack County, New Hampshire Veterans by Race

Merrimack County, New Hampshire Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.88%

Veteran Poverty Rate

27.57%

Veteran Disability Rate

Merrimack County, New Hampshire Veterans by Education

LaborForceParticipation

64.9%

Labor Force Participation

62.3%

Employment Rate

3.6%

Unemployment Rate

Merrimack County, New Hampshire Employment by Age

LaborForceParticipation

Merrimack County, New Hampshire Employment by Race

LaborForceParticipation

Merrimack County, New Hampshire 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

53.16%

Born in Merrimack County, New Hampshire

95.23%

Native Born

4.77%

Foreign Born

1.74%

Non Citizen

3.03%

Naturalized

Place of Birth

95.23% of Merrimack County, New Hampshire residents were born in the United States, with 53.16% having been born in New Hampshire. 1.74% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Merrimack County, New Hampshire Place of Birth

Sources