Potomac, IL Profile: Facts & Data


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Potomac, Illinois - Basic Facts

The Village of Potomac had a population of 679 as of July 1, 2018.

The primary coordinate point for Potomac is located at latitude 40.305 and longitude -87.8006 in Vermilion County. The formal boundaries for the Village of Potomac encompass a land area of 0.48 sq. miles and a water area of 0 sq. miles. Vermilion County is in the Central time zone (GMT -6). The elevation is 669 feet.

The Village of Potomac (GNIS ID: 2399011) 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 Potomac is located within Township of Middlefork, a minor civil division (MCD) of Vermilion County.

Alternate Unofficial Names for Potomac: Marysville.

Jump to... (On This Page!)
  1. Potomac 2018 Demographic Data
  2. Growth Rates for Potomac (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Illinois Research Tools (Easy Tools & Current Data)
  3. Illinois Data Comparison Tool - 2018 Demographics

Potomac, IL - Most Popular Things to Do

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Potomac, IL Data & Demographics (As of July 1, 2018)


Total Population 679
Population in Households 679
Population in Familes 580
Population in Group Qrtrs 0
Population Density2 1,402
Diversity Index3 10


Median Household Income $57,797
Average Household Income $71,373
Per Capita Income $28,483


Total Housing Units 283 (100%)
Owner Occupied HU 220 (77.7%)
Renter Occupied HU 39 (13.8%)
Vacant Housing Units 24 ( 8.5%)
Median Home Value $89,583
Average Home Value $113,348


Total Households 259
Average Household Size 2.62
Family Households 188
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population -1.2% -1.11%
Households -0.98% -1.02%
Families -0.93% -1.09%
Median Household Income   2.54%
Per Capita Income   2.93%

Potomac, IL - Peer Comparisons by Rank and Percentile

The table below compares Potomac to the other 1,368 incorporated cities, towns and CDPs in Illinois 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 # 820 40th
Population Density # 522 62nd
Diversity Index # 828 39th
Median Household Income # 560 59th
Per Capita Income # 619 55th

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

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Illinois Census Data Comparison Tool

Compare Illinois July 1, 2018 Data
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