Monticello, IL Profile: Facts, Map & Data


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Monticello, Illinois - Basic Facts

The City of Monticello had a population of 5,575 as of July 1, 2015.

The primary coordinate point for Monticello is located at latitude 40.0335 and longitude -88.5741 in Piatt County. The formal boundaries for the City of Monticello (see map below) encompass a land area of 3.8 sq. miles and a water area of 0.04 sq. miles. Piatt County is in the Central time zone (GMT -6). The elevation is 659 feet.

The City of Monticello (GNIS ID: 2395384) 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 Monticello is located within Township of Monticello, a minor civil division (MCD) of Piatt County.

Beneath the boundary map are tables with Monticello population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2015.

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


City of Monticello, IL Boundary Map

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Boundary Maps: Township of Monticello | Piatt County | Illinois Counties

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Monticello, IL Data & Demographics (As of July 1, 2015)


Total Population 5,575
Population in Households 5,547
Population in Familes 4,579
Population in Group Qrtrs 28
Population Density1 1,466
Diversity Index2 9


Total Households 2,348
Average Household Size 2.36
Family Households 1,578
Average Family Size 3


Total Housing Units 2,551 (100%)
Owner Occupied HU 1,811 (71.0%)
Renter Occupied HU 537 (21.1%)
Vacant Housing Units 203 ( 8.0%)
Median Home Value $170,796
Average Home Value $190,585


Median Household Income $68,655
Average Household Income $80,147
Per Capita Income $33,787
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.09% 0.28%
Households 0.13% 0.29%
Families 0.06% 0.15%
Median Household Income   2.66%
Per Capita Income   2.21%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


Monticello, IL - Peer Comparisons by Rank and Percentile

The table below compares Monticello to the other 1,367 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2015 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 # 321 77th
Population Density1 # 502 63rd
Diversity Index2 # 935 32nd
Median Household Income # 266 81st
Per Capita Income # 200 85th

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