Diamond, Illinois

Diamond is a village in Grundy and Will Counties, Illinois. The population was 2,527 at the 2010 census. Terry Kernc is the current mayor of Diamond.

Location of Diamond in Will County, Illinois.
Location of Illinois in the United States
Coordinates: 41°17′16″N 88°15′14″W
CountryUnited States
CountiesGrundy, Will
  MayorTerry Kernc
  Total1.89 sq mi (4.89 km2)
  Land1.89 sq mi (4.89 km2)
  Water0.00 sq mi (0.00 km2)
561 ft (171 m)
  Density1,309.49/sq mi (505.63/km2)
Time zoneUTC-6 (CST)
  Summer (DST)UTC-5 (CDT)
ZIP Code(s)
Area code(s)815 & 779
FIPS code17-19837
Wikimedia CommonsDiamond, Illinois


A post office called Diamond was established in 1872, and remained in operation until 1909.[3] Black Diamond had its start as a coal town.[4] The village was named for its location in the center of the "Black Diamond" coal district.[5]

On February 16, 1883 the Diamond Mine flooded, killing 72 miners. A monument was erected in Diamond memorializing the event.[6]

On November 17, 2013, an EF-2 tornado hit Diamond.


Diamond is located at 41°17′16″N 88°15′14″W (41.287699, -88.253824).[7]

According to the 2010 census, Diamond has a total area of 1.89 square miles (4.90 km2), all land.[8]


Historical population
Est. 20182,528[2]0.0%
U.S. Decennial Census[9]

As of the census[10] of 2000, there were 1,393 people, 551 households, and 406 families residing in the village. The population density was 880.3 people per square mile (340.4/km²). There were 597 housing units at an average density of 377.3 per square mile (145.9/km²). The racial makeup of the village was 97.13% White, 0.65% Native American, 0.07% Asian, 0.86% from other races, and 1.29% from two or more races. Hispanic or Latino of any race were 3.52% of the population.

There were 551 households out of which 36.1% had children under the age of 18 living with them, 53.5% were married couples living together, 14.7% had a female householder with no husband present, and 26.3% were non-families. 21.4% of all households were made up of individuals and 5.6% had someone living alone who was 65 years of age or older. The average household size was 2.53 and the average family size was 2.95.

In the village, the population was spread out with 27.1% under the age of 18, 9.0% from 18 to 24, 30.9% from 25 to 44, 23.0% from 45 to 64, and 9.9% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 94.6 males. For every 100 females age 18 and over, there were 93.7 males.

The median income for a household in the village was $43,750, and the median income for a family was $49,688. Males had a median income of $46,136 versus $24,813 for females. The per capita income for the village was $20,223. About 5.6% of families and 8.6% of the population were below the poverty line, including 13.2% of those under age 18 and 9.5% of those age 65 or over.


  1. "2016 U.S. Gazetteer Files". United States Census Bureau. Retrieved Jun 29, 2017.
  2. "Population and Housing Unit Estimates". Retrieved December 12, 2019.
  3. "Grundy County". Jim Forte Postal History. Retrieved 4 November 2015.
  4. Callary, Edward (29 September 2008). Place Names of Illinois. University of Illinois Press. p. 93. ISBN 978-0-252-09070-7.
  5. Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 106.
  6. "Coal City Public Library".
  7. "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
  8. "G001 - Geographic Identifiers - 2010 Census Summary File 1". United States Census Bureau. Retrieved 2015-08-02.
  9. "Census of Population and Housing". Census.gov. Archived from the original on April 26, 2015. Retrieved June 4, 2015.
  10. "American FactFinder". United States Census Bureau. Archived from the original on 2013-09-11. Retrieved 2008-01-31.
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