Merrimack County NH Information


Merrimack County Subdivisions

Merrimack County NH Data & Demographics (As of July 1, 2015)


Total Population 148,601
Population in Households 142,125
Population in Familes 113,109
Population in Group Qrtrs 6,476
Population Density1 159
Diversity Index2 14


Total Households 58,376
Average Household Size 2.43
Family Households 38,775
Average Family Size 3


Total Housing Units 65,004 (100%)
Owner Occupied HU 40,585 (62.4%)
Renter Occupied HU 17,791 (27.4%)
Vacant Housing Units 6,628 (10.2%)
Median Home Value $234,130
Average Home Value $257,757


Median Household Income $67,023
Average Household Income $82,704
Per Capita Income $32,649
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.28% 0.35%
Households 0.43% 0.41%
Families 0.33% 0.34%
Median Household Income   2.81%
Per Capita Income   2.33%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


Merrimack County NH - Peer Comparisons by Rank and Percentile

The table below compares Merrimack County to the other 10 counties and county equivalents in New Hampshire by rank and percentile using July 1, 2015 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 3 80th
Population Density1 # 4 70th
Diversity Index2 # 5 60th
Median Household Income # 3 80th
Per Capita Income # 3 80th

Additional comparisons and rankings can be made with a VERY EASY TO USE New Hampshire Census Data Comparison Tool.