Plainfield, PA Profile: Facts & Data


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Plainfield, Pennsylvania - Basic Facts

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The Plainfield CDP(1) had a population of 426 as of July 1, 2021.

The primary coordinate point for Plainfield is located at latitude 40.2031 and longitude -77.29 in Cumberland County. The formal boundaries for the Plainfield Census Designated Place encompass a land area of 0.65 sq. miles and a water area of 0 sq. miles. Cumberland County is in the Eastern time zone (GMT -5). The elevation is 499 feet.

The Plainfield Census Designated Place 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 Plainfield Census Designated Place is located within Township of West Pennsboro, a minor civil division (MCD) of Cumberland County.

Alternate Unofficial Names for Plainfield: Smoketown.

  1. A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

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  1. Plainfield 2021 Demographic Data
  2. Growth Rates for Plainfield (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Pennsylvania Research Tools (Easy Tools & Current Data)
  3. Pennsylvania Data Comparison Tool - 2021 Demographics

Plainfield, PA Data & Demographics (As of July 1, 2021)


Total Population 426 (100%)
Population in Households 426 (100.0%)
Population in Families 365 (85.7%)
Population in Group Quarters1 0
Population Density 659
Diversity Index2 16


Median Household Income $76,239
Average Household Income $106,246
% of Income for Mortgage4 14%
Per Capita Income $42,386
Wealth Index5 133


Total HU (Housing Units) 188 (100%)
Owner Occupied HU 142 (75.5%)
Renter Occupied HU 34 (18.1%)
Vacant Housing Units 12 ( 6.4%)
Median Home Value $244,318
Average Home Value $254,545
Housing Affordability Index3 197


Total Households 176
Average Household Size 2.42
Family Households 133
Average Family Size 3
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. 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 races 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.
  3. 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.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. 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.


2010-2021 2021-2026
Population 0.58% 0.83%
Households 0.63% 0.89%
Families 1.3% 0.59%
Median Household Income   1.86%
Per Capita Income   2.43%
Owner Occupied HU   0.97%

Plainfield, PA - Peer Comparisons by Rank and Percentile

The table below compares Plainfield to the other 1,761 incorporated cities, towns and CDPs in Pennsylvania by rank and percentile using July 1, 2021 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 # 1391 21st
Population Density # 1274 28th
Median Household Income # 310 82nd
Housing Affordability Index # 901 51st
Per Capita Income # 182 90th
Diversity Index # 823 54th

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

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