Onarga, IL Profile: Facts & Data


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Onarga, Illinois - Basic Facts

The Village of Onarga had a population of 1,245 as of July 1, 2018. Onarga ranks in the upper 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 Onarga is located at latitude 40.715 and longitude -88.0061 in Iroquois County. The formal boundaries for the Village of Onarga (see map below) encompass a land area of 1.18 sq. miles and a water area of 0 sq. miles. Iroquois County is in the Central time zone (GMT -6). The elevation is 673 feet.

The Village of Onarga (GNIS ID: 2399574) 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 Onarga is located within Township of Onarga, a minor civil division (MCD) of Iroquois County.

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  1. Onarga 2018 Demographic Data
  2. Growth Rates for Onarga (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

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


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


Total Population 1,245
Population in Households 1,150
Population in Familes 971
Population in Group Qrtrs 95
Population Density2 1,054
Diversity Index3 76


Median Household Income $45,851
Average Household Income $59,525
Per Capita Income $20,975


Total Housing Units 478 (100%)
Owner Occupied HU 312 (65.3%)
Renter Occupied HU 98 (20.5%)
Vacant Housing Units 68 (14.2%)
Median Home Value $92,188
Average Home Value $123,875


Total Households 410
Average Household Size 2.8
Family Households 286
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 -0.65% -0.8%
Households -0.58% -0.79%
Families -1.16% -0.85%
Median Household Income   0.94%
Per Capita Income   1.7%

Onarga, IL - Peer Comparisons by Rank and Percentile

The table below compares Onarga 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 # 639 53rd
Population Density # 715 48th
Diversity Index # 40 97th
Median Household Income # 1018 26th
Per Capita Income # 1250 9th

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

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