Loudon, NH Profile: Facts, Map & Data


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Loudon, New Hampshire - Basic Facts

The Loudon Census Designated Place had a population of 603 as of July 1, 2018. Loudon ranks in the lower quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in New Hampshire. See peer rankings below.

The primary coordinate point for Loudon is located at latitude 43.2828 and longitude -71.4647 in Merrimack County. The formal boundaries for the Loudon Census Designated Place (see map below) encompass a land area of 1.66 sq. miles and a water area of 0 sq. miles. Merrimack County is in the Eastern time zone (GMT -5). The elevation is 381 feet.

The Loudon Census Designated Place (GNIS ID: 2629726) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Loudon Census Designated Place is located within Town of Loudon, a minor civil division (MCD) of Merrimack County.

Beneath the boundary map are tables with Loudon population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2018.

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Loudon Census Designated Place, NH Boundary Map

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Loudon, NH Data & Demographics (As of July 1, 2018)


Total Population 603
Population in Households 603
Population in Familes 503
Population in Group Qrtrs 0
Population Density2 363
Diversity Index3 7


Median Household Income $78,826
Average Household Income $90,296
Per Capita Income $32,687


Total Housing Units 267 (100%)
Owner Occupied HU 221 (82.8%)
Renter Occupied HU 31 (11.6%)
Vacant Housing Units 16 ( 6.0%)
Median Home Value $254,661
Average Home Value $322,738


Total Households 251
Average Household Size 2.4
Family Households 184
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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.


2010-2017 2017-2022
Population 0.92% 0.94%
Households 0.91% 0.94%
Families 2.76% 0.85%
Median Household Income   0.73%
Per Capita Income   1.72%

Loudon, NH - Peer Comparisons by Rank and Percentile

The table below compares Loudon to the other 97 incorporated cities, towns and CDPs in New Hampshire by rank and percentile using July 1, 2018 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 # 77 22nd
Population Density # 82 16th
Diversity Index # 94 5th
Median Household Income # 10 91st
Per Capita Income # 41 59th

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

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