Coal City vs Diamond

A side-by-side comparison of Coal City and Diamond: population, income, housing, and more.

Coal City and Diamond are places in Illinois. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Coal City has the higher population (5,145 vs 2,900 in Diamond). Coal City has the higher median household income ($73,030 vs $60,000 in Diamond). Coal City has the higher median home value ($211,600 vs $211,500 in Diamond).

Population, income & housing

	Coal City	Diamond
Population	5,145	2,900
Median age	42.3 yrs	36.2 yrs
Median household income	$73,030	$60,000
Median home value	$211,600	$211,500
Median gross rent	$1,064	$1,224
Housing units	2,026	1,166
Homeownership rate	80.7%	79.2%
Bachelor's degree or higher	24.9%	12.1%
Unemployment rate	6.3%	0.7%

Trends (ACS 5-year, 2019–2023)

	Coal City	Diamond
Population	5,294 → 5,145 (-2.8%)	2,697 → 2,900 (+7.5%)
Median household income	$74,755 → $73,030 (-2.3%)	$59,934 → $60,000 (+0.1%)
Median home value	$197,100 → $211,600 (+7.4%)	$194,600 → $211,500 (+8.7%)
Median gross rent	$1,006 → $1,064 (+5.8%)	$1,076 → $1,224 (+13.8%)

Coal City

Population

5,2945,145

Median household income

$74,755$73,030

Median home value

$197,100$211,600

Median gross rent

$1,006$1,064

Diamond

Population

2,6972,900

Median household income

$59,934$60,000

Median home value

$194,600$211,500

Median gross rent

$1,076$1,224

Age & race/ethnicity

Age distribution (share)

	Coal City	Diamond
Under 5	3.9%	6.5%
5 to 17	21.4%	21.3%
18 to 24	7.6%	9.6%
25 to 34	8.3%	11.0%
35 to 44	14.0%	15.6%
45 to 54	12.7%	9.6%
55 to 64	12.9%	16.6%
65 to 74	15.0%	3.1%
75 and over	4.2%	6.6%

Race & ethnicity (share)

	Coal City	Diamond
White (non-Hispanic)	90.2%	89.9%
Black or African American	0.8%	0.0%
American Indian & Alaska Native	0.0%	0.0%
Asian	0.2%	0.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.2%
Two or more races	1.4%	2.9%
Hispanic or Latino	7.5%	6.9%

Educational attainment (age 25+)

Share of adults 25+

	Coal City	Diamond
No high school diploma	10.4%	4.4%
High school graduate	35.5%	38.5%
Some college or associate's	29.2%	45.0%
Bachelor's degree	16.7%	7.4%
Graduate or professional degree	8.1%	4.7%

Commute to work

How workers get to work (share)

	Coal City	Diamond
Drove alone	80.9%	91.2%
Carpooled	1.8%	2.7%
Public transit	0.0%	0.0%
Walked	2.6%	1.2%
Bicycle	0.0%	0.0%
Worked from home	13.2%	3.8%
Other means	1.5%	1.1%

Housing

Units in structure (share)

	Coal City	Diamond
1-unit, detached	68.0%	48.5%
1-unit, attached	18.0%	14.7%
2 to 4 units	11.1%	5.3%
5 to 19 units	2.4%	8.9%
20 or more units	0.0%	0.0%
Mobile home & other	0.5%	22.6%

Poverty & households

	Coal City	Diamond
Poverty rate	4.7%	14.1%
Average household size	2.66	2.50
Mean commute (minutes)	27	27
Median year structure built	1984	1991