Merrimack County, New Hampshire

13 cities & places have their primary county here.

Population: 155,018
Median household income: $93,944
Median home value: $330,600

Home to 155,018 residents, Merrimack County is one of New Hampshire's counties. 13 cities and places have their primary county here. At $93,944, its median household income sits in line with New Hampshire's $95,628.

Between 2019 and 2023, Merrimack County's population grew 3.4% from 149,917 to 155,018, while its median household income rose 24.0% from $75,737 to $93,944.

White (non-Hispanic) residents are the largest group, 90.6% of the population. 75.0% of workers drive to work alone.

Demographics

ACS 2019–2023

Population: 155,018
Median age: 42.6 yrs
Median household income: $93,944
Median home value: $330,600
Median gross rent: $1,293
Housing units: 66,080
Homeownership rate: 73.5%
Bachelor's degree or higher: 38.1%
Unemployment rate: 3.1%

Trends

ACS 5-year · 2019–2023

Population

149,917155,018

Median household income

$75,737$93,944

Median home value

$237,600$330,600

Median gross rent

$1,042$1,293

Year	Population	Median household income	Median home value	Median gross rent
2019	149,917	$75,737	$237,600	$1,042
2020	150,902	$77,937	$245,400	$1,066
2021	152,983	$82,457	$255,100	$1,113
2022	153,918	$88,806	$297,600	$1,199
2023	155,018	$93,944	$330,600	$1,293

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 54.5%

5 to 1714.1%

18 to 249.1%

25 to 3412.7%

35 to 4412.5%

45 to 5412.6%

55 to 6415.1%

65 to 7411.9%

75 and over7.4%

	Count	Share
Under 5	6,964	4.5%
5 to 17	21,865	14.1%
18 to 24	14,127	9.1%
25 to 34	19,719	12.7%
35 to 44	19,381	12.5%
45 to 54	19,542	12.6%
55 to 64	23,445	15.1%
65 to 74	18,521	11.9%
75 and over	11,454	7.4%

Race & ethnicity

	Count	Share
White (non-Hispanic)	140,450	90.6%
Black or African American	2,314	1.5%
American Indian & Alaska Native	196	0.1%
Asian	2,508	1.6%
Native Hawaiian & Pacific Islander	35	0.0%
Some other race	315	0.2%
Two or more races	5,117	3.3%
Hispanic or Latino (any race)	4,083	2.6%

Educational attainment (age 25+)

No high school diploma6.3%

High school graduate28.2%

Some college or associate's27.4%

Bachelor's degree22.2%

Graduate or professional degree15.9%

	Count	Share
No high school diploma	7,043	6.3%
High school graduate	31,608	28.2%
Some college or associate's	30,738	27.4%
Bachelor's degree	24,877	22.2%
Graduate or professional degree	17,796	15.9%

Commute to work

Mean travel time to work: 27 min

Drove alone75.0%

Carpooled7.7%

Public transit0.3%

Walked2.7%

Bicycle0.3%

Worked from home13.1%

Other means0.9%

How workers get to work

	Count	Share
Drove alone	59,605	75.0%
Carpooled	6,148	7.7%
Public transit	214	0.3%
Walked	2,144	2.7%
Bicycle	217	0.3%
Worked from home	10,441	13.1%
Other means	727	0.9%

Travel time

	Count	Share
Under 15 min	17,367	25.1%
15 to 29 min	25,222	36.5%
30 to 44 min	14,915	21.6%
45 to 59 min	5,726	8.3%
60+ min	5,825	8.4%

Households

Average household size: 2.46
Poverty rate: 7.1% (10,586 of 149,211)

	Count	Share
Family households	40,359	66.8%
Nonfamily households	20,086	33.2%

Housing

Median year structure built: 1977

Occupancy

	Count	Share
Occupied	60,445	91.5%
Vacant	5,635	8.5%

Tenure (of occupied units)

	Count	Share
Owner-occupied	44,426	73.5%
Renter-occupied	16,019	26.5%

1-unit, detached63.2%

1-unit, attached4.4%

2 to 4 units11.5%

5 to 19 units7.2%

20 or more units7.1%

Mobile home & other6.6%

Units in structure

	Count	Share
1-unit, detached	41,777	63.2%
1-unit, attached	2,901	4.4%
2 to 4 units	7,578	11.5%
5 to 19 units	4,788	7.2%
20 or more units	4,670	7.1%
Mobile home & other	4,366	6.6%

Geography

County GEOID: 33013
State: New Hampshire
Land area: 933 sq mi
Water area: 22 sq mi
Center point: 43.2996, -71.6800