Sycamore, IL Profile: Facts & Data


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Sycamore, Illinois - Basic Facts

The City of Sycamore had a population of 17,732 as of July 1, 2018. Sycamore ranks in the upper quartile for Population Density and 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 Sycamore is located at latitude 41.9967 and longitude -88.6775 in DeKalb County. The formal boundaries for the City of Sycamore (see map below) encompass a land area of 9.73 sq. miles and a water area of 0.04 sq. miles. DeKalb County is in the Central time zone (GMT -6). The elevation is 873 feet.

The City of Sycamore (GNIS ID: 2396018) 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 City of Sycamore is located within Township of Sycamore, a minor civil division (MCD) of DeKalb County.

Beneath the boundary map are tables with Sycamore population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2018.

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


Total Population 17,732
Population in Households 17,543
Population in Familes 14,206
Population in Group Qrtrs 189
Population Density1 1,823
Diversity Index2 35


Median Household Income $68,925
Average Household Income $83,533
Per Capita Income $33,765


Total Housing Units 7,511 (100%)
Owner Occupied HU 4,645 (61.8%)
Renter Occupied HU 2,506 (33.4%)
Vacant Housing Units 359 ( 4.8%)
Median Home Value $188,308
Average Home Value $214,839


Total Households 7,152
Average Household Size 2.45
Family Households 4,663
Average Family Size 3
  1. Population Density = Total Population per square mile.
  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 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 0.15% 0.39%
Households 0.27% 0.49%
Families 0.23% 0.34%
Median Household Income   2.06%
Per Capita Income   2.59%

Sycamore, IL - Peer Comparisons by Rank and Percentile

The table below compares Sycamore 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 # 146 89th
Population Density # 329 76th
Diversity Index # 318 77th
Median Household Income # 299 78th
Per Capita Income # 308 78th

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

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