Merrimack County, New Hampshire Population 2021

Merrimack County, New Hampshire's estimated population is 152,873 with a growth rate of 0.49% in the past year according to the most recent United States census data. Merrimack County, New Hampshire is the 4th largest county inNew Hampshire. The 2010 Population was 146,388 and has seen a growth of 4.43% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
2021152,8737410.49%
2020152,1327410.49%
2019151,3917410.49%
2018150,6508200.55%
2017149,8307670.51%
2016149,0634140.28%
2015148,6494880.33%
2014148,1616640.45%
2013147,4973920.27%
2012147,1052380.16%
2011146,8674790.33%
2010146,38826,38321.98%
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%
183034,6140.00%
2021 Growth Rate
0.49% (741)
County Website
Founded
1823
County Seat
2010 Population
146,388
Growth Since 2010
4.43% (6,485)
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Merrimack County, New Hampshire Population Growth

Population by Race

Race Population Percentage
White141,01794.06%
Asian3,1352.09%
Two or More Races2,6081.74%
Black or African American2,1391.43%
Some Other Race5760.38%
American Indian and Alaska Native4270.28%
Native Hawaiian and Other Pacific Islander150.01%
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Merrimack County, New Hampshire Population by Race

Merrimack County, New Hampshire Population Pyramid $2021

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Merrimack County, New Hampshire Median Age

42.8


Total

41.3


Male

44.3


Female

Merrimack County, New Hampshire Adults

There are 120,868 adults, (26,316 of whom are seniors) in Merrimack County, New Hampshire.

Merrimack County, New Hampshire Age Dependency

58.6

Age Dependency Ratio

27.8

Old Age Dependency Ratio

30.7

Child Dependency Ratio

Merrimack County, New Hampshire Sex Ratio

Female

76,057

50.73%

Male

73,860

49.27%

Merrimack County, New Hampshire Population by Age

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

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Merrimack County, New Hampshire Household Types

Type Owner Renter
Non Family51.3%48.7%
Female57%43%
Male69.7%30.3%
All71.8%28.2%
Married87.2%12.8%

71.8%

Rate of Home Ownership

Merrimack County, New Hampshire Households and Families

Type Count Average Size Owned
All58,4522.4571.8
Married31,2313.0487.2
Non Family19,6741.2951.3
Female5,1082.9857
Male2,4393.1469.7

2.94

Average Family Size

2.45

Average Household Size

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Merrimack County, New Hampshire Households by Type

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Education Attained Count Percentage
Less Than 9th Grade2,2982.15%
9th to 12th Grade4,9024.60%
High School Graduate29,54127.70%
Some College19,56218.34%
Associates Degree12,33611.57%
Bachelors Degree21,82420.46%
Graduate Degree16,18415.18%
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Merrimack County, New Hampshire Educational Attainment by Sex (over 25)

Merrimack County, New Hampshire Educational Attainment by Race

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Race Total High School Bachelors
White100,51894,36135,790
Asian1,8061,4841,075
Hispanic1,6591,454555
2+ Races1,3541,172306
Black968827250
Other Race407215100
Native American27622528
Islander1515

The highest rate of high school graduation is among islander people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 59.52%.

Merrimack County, New Hampshire Educational Attainment by Race

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Name Average Male Female
Overall$45,479$52,854$39,136
Less Than 9th Grade$31,751$38,132$26,528
High School Graduate$38,927$45,493$30,682
Some College$40,821$50,317$35,121
Bachelors Degree$52,875$64,995$44,754
Graduate Degree$69,473$81,495$60,378

$45,479

Average Earnings

$52,854

Average Male

$39,136

Average Female

Merrimack County, New Hampshire Earnings by Educational Attainment

Merrimack County, New Hampshire Language by Age

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Merrimack County, New Hampshire Language

94.01% of Merrimack County, New Hampshire residents speak only English, while 5.99% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 3.15% of the population.

Merrimack County, New Hampshire Language

Merrimack County, New Hampshire Poverty by Race

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Name Total In Poverty Poverty Rate
White133,0898,3206.25%
Asian2,94933311.29%
Hispanic2,7032529.32%
Multiple2,2961918.32%
Black1,74918610.63%
Native3888521.91%
Other554142.53%

6.53%

Overall Poverty Rate

5.75%

Male Poverty Rate

7.27%

Female Poverty Rate

Poverty in Merrimack County, New Hampshire

The race most likely to be in poverty in Merrimack County, New Hampshire is Native, with 21.91% below the poverty level.

The race least likely to be in poverty in Merrimack County, New Hampshire is Other, with 2.53% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.57%. Among those working part-time, it was 9.69%, and for those that did not work, the poverty rate was 13.83%.

Merrimack County, New Hampshire Poverty

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Name Poverty
Less Than 9th Grade13.77%
High School8.49%
Some College5.42%
Bachelors or Greater2.37%

Merrimack County, New Hampshire Poverty Rate by Education

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Rate Poverty
Female Unemployed18.56%
Male Unemployed18.01%
Female Employed3.95%
Male Employed2.27%

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

Merrimack County, New Hampshire Income by Household Type

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Name Median Mean
Households$75,737$94,698
Families$92,777$112,648
Married Families$102,584$123,292
Non Families$39,970$53,929
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Income by Household Type

Merrimack County, New Hampshire Marital Status

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Marriage Rates

52.5%

Overall Marriage Rate

52.7%

Male Marriage Rate

52.3%

Female Marriage Rate

Merrimack County, New Hampshire Married by Age and Sex

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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

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Merrimack County, New Hampshire Marital Status

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10,742

Number of Veterans

9,844

Male Veterans

898

Female Veterans

War Veterans
Vietnam3,913
First Gulf War1,973
Second Gulf War1,362
Korea1,017
World War II395

Merrimack County, New Hampshire Veterans by War

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Age Group Veterans
75+2,732
65 to 742,721
35 to 542,439
55 to 642,242
18 to 34608

Merrimack County, New Hampshire Veterans by Age

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Name Veterans % of Total
White10,5699.24%
Hispanic22710.09%
2+ Races623.76%
Black422.87%
Native American3711.71%
Asian210.90%
Other Race112.38%

Merrimack County, New Hampshire Veterans by Race

Merrimack County, New Hampshire Veterans by Education

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3.95%

Veteran Poverty Rate

28.23%

Veteran Disability Rate

Merrimack County, New Hampshire Veterans by Education

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66.6%

Labor Force Participation

64.1%

Employment Rate

3.6%

Unemployment Rate

Merrimack County, New Hampshire Employment by Age

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Merrimack County, New Hampshire Employment by Race

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Merrimack County, New Hampshire Employment by Education

Origin of Non-Citizens

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

Origin of Naturalized Citizens

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53.17%

Born in Merrimack County, New Hampshire

94.81%

Native Born

5.19%

Foreign Born

2.28%

Non Citizen

2.92%

Naturalized

Place of Birth

94.81% of Merrimack County, New Hampshire residents were born in the United States, with 53.17% having been born in New Hampshire. 2.28% 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

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources