Merrimack County NH Information


Merrimack County Subdivisions

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  1. Merrimack County 2019 Demographic Data
  2. Growth Rates forMerrimack County (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. New Hampshire Research Tools (Easy Tools & Current Data)
  3. New Hampshire Data Comparison Tool - 2019 Demographics

Merrimack County NH Data & Demographics (As of July 1, 2019)


Total Population 154,566
Population in Households 147,773
Population in Familes 116,958
Population in Group Qrtrs 6,793
Population Density 166
Diversity Index1 16


Median Household Income $71,927
Average Household Income $92,311
Per Capita Income $36,023
Wealth Index3 115


Total Housing Units 66,595 (100%)
Owner Occupied HU 41,242 (61.9%)
Renter Occupied HU 18,956 (28.5%)
Vacant Housing Units 6,397 ( 9.6%)
Median Home Value $239,333
Housing Affordability Index2 116


Total Households 60,198
Average Household Size 2.45
Family Households 39,647
Average Family Size 3
  1. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.
  2. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  3. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2019 2019-2024
Population 0.59% 0.56%
Households 0.58% 0.58%
Families 0.43% 0.49%
Median Household Income   1.54%
Per Capita Income   2.08%


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, 2019 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 Density # 4 70th
Diversity Index # 5 60th
Median Household Income # 3 80th
Per Capita Income # 4 70th

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

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New Hampshire Census Data Comparison Tool

Compare New Hampshire July 1, 2019 Data
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