West Mifflin, PA Profile: Facts, Map & Data


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West Mifflin, Pennsylvania - Basic Facts

The Borough of West Mifflin had a population of 20,206 as of July 1, 2016. West Mifflin ranks in the upper quartile for 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 West Mifflin is located at latitude 40.3577 and longitude -79.9054 in Allegheny County. The formal boundaries for the Borough of West Mifflin (see map below) encompass a land area of 14.21 sq. miles and a water area of 0.29 sq. miles. Allegheny County is in the Eastern time zone (GMT -5). The elevation is 1,089 feet.

The Borough of West Mifflin (GNIS ID: 1214837) 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 West Mifflin population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Neighborhood Data

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Borough of West Mifflin, PA Boundary Map

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West Mifflin, PA Data & Demographics (As of July 1, 2016)


Total Population 20,206
Population in Households 20,113
Population in Familes 16,038
Population in Group Qrtrs 93
Population Density1 1,422
Diversity Index2 28


Total Households 8,848
Average Household Size 2.27
Family Households 5,626
Average Family Size 3


Total Housing Units 9,547 (100%)
Owner Occupied HU 6,734 (70.5%)
Renter Occupied HU 2,114 (22.1%)
Vacant Housing Units 699 ( 7.3%)
Median Home Value $86,007
Average Home Value $101,934


Median Household Income $48,420
Average Household Income $58,339
Per Capita Income $25,647
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.08% -0.02%
Households 0.08% 0.1%
Families -0.1% -0.02%
Median Household Income   1.3%
Per Capita Income   1.65%
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.

West Mifflin, PA - Peer Comparisons by Rank and Percentile

The table below compares West Mifflin to the other 1,762 incorporated cities, towns and CDPs in Pennsylvania by rank and percentile using July 1, 2016 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 # 30 98th
Population Density1 # 880 50th
Diversity Index2 # 349 80th
Median Household Income # 924 48th
Per Capita Income # 797 55th

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

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