Plymouth, IL Profile: Facts, Map & Data


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Plymouth, Illinois - Basic Facts

The Village of Plymouth had a population of 470 as of July 1, 2017. Plymouth ranks in the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for Plymouth is located at latitude 40.2921 and longitude -90.9163 in Hancock County. The formal boundaries for the Village of Plymouth (see map below) encompass a land area of 0.56 sq. miles and a water area of 0 sq. miles. Hancock County is in the Central time zone (GMT -6). The elevation is 650 feet.

The Village of Plymouth (GNIS ID: 2398989) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The Village of Plymouth is located within Township of Saint Mary, a minor civil division (MCD) of Hancock County.

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

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Village of Plymouth, IL Boundary Map

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Boundary Maps: Township of Saint Mary | Hancock County | Illinois Counties

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Plymouth, IL Data & Demographics (As of July 1, 2017)


Total Population 470
Daytime Population: Workers 23
Daytime Population: Residents 278
Total Daytime Population (TDP) 301
Ratio TDP/Total Population1 0.64
Population in Households 453
Population in Familes 361
Population in Group Qrtrs 17
Population Density2 838
Diversity Index3 5


Median Household Income $33,404
Average Household Income $47,335
Per Capita Income $18,626


Total Housing Units 249 (100%)
Owner Occupied HU 150 (60.2%)
Renter Occupied HU 44 (17.7%)
Vacant Housing Units 55 (22.1%)
Median Home Value $45,988
Average Home Value $81,376


Total Households 194
Average Household Size 2.34
Family Households 125
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 -0.99% -0.95%
Households -0.89% -0.95%
Families -0.54% -1.15%
Median Household Income   2.12%
Per Capita Income   3.38%

Plymouth, IL - Peer Comparisons by Rank and Percentile

The table below compares Plymouth to the other 1,368 incorporated cities, towns and CDPs in Illinois 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 # 958 30th
Population Density # 860 37th
Diversity Index # 1211 12th
Median Household Income # 1330 3rd
Per Capita Income # 1309 4th

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

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