Mount Joy, PA Profile: Facts, Map & Data


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Mount Joy, Pennsylvania - Basic Facts

The Borough of Mount Joy had a population of 8,171 as of July 1, 2017. Mount Joy ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Pennsylvania. See peer rankings below.

The primary coordinate point for Mount Joy is located at latitude 40.1106 and longitude -76.5057 in Lancaster County. The formal boundaries for the Borough of Mount Joy (see map below) encompass a land area of 2.41 sq. miles and a water area of 0.02 sq. miles. Lancaster County is in the Eastern time zone (GMT -5). The elevation is 381 feet.

The Borough of Mount Joy (GNIS ID: 1215344) has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Beneath the boundary map are tables with Mount Joy population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Mount Joy: Mountjoy.

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Borough of Mount Joy, PA Boundary Map

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Mount Joy, PA Data & Demographics (As of July 1, 2017)


Total Population 8,171
Daytime Population: Workers 3,539
Daytime Population: Residents 3,776
Total Daytime Population (TDP) 7,315
Ratio TDP/Total Population1 0.90
Population in Households 8,171
Population in Familes 6,308
Population in Group Qrtrs 0
Population Density2 3,389
Diversity Index3 36


Median Household Income $59,206
Average Household Income $73,651
Per Capita Income $31,034


Total Housing Units 3,658 (100%)
Owner Occupied HU 2,063 (56.4%)
Renter Occupied HU 1,380 (37.7%)
Vacant Housing Units 215 ( 5.9%)
Median Home Value $166,894
Average Home Value $196,970


Total Households 3,443
Average Household Size 2.37
Family Households 2,178
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 1.36% 1.1%
Households 1.29% 1.07%
Families 1.16% 0.98%
Median Household Income   2.42%
Per Capita Income   2.82%

Mount Joy, PA - Peer Comparisons by Rank and Percentile

The table below compares Mount Joy to the other 1,762 incorporated cities, towns and CDPs in Pennsylvania by rank and percentile using July 1, 2017 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 # 133 93rd
Population Density # 337 81st
Diversity Index # 236 87th
Median Household Income # 479 73rd
Per Capita Income # 445 75th

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

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