Diamond, Illinois

Village in Grundy County · population 2,640 (2020 Census) · spans 2 counties

Median home: $220,200
Household income: $73,201
Jan low / Jul high: 17° / 85°
Snow a year: 18 in
Tornadoes ≤10 mi since 1950: 25
Median age: 35.5

Diamond is a village of 2,640 people in Grundy County, Illinois. The median home is worth $220,200, above the typical Illinois town ($156,600).

How Diamond ranks

Percentile among Illinois towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of Illinois towns.

The Town Files lifestyle rankings, built from federal demographic, school, crime and housing data (2025).

Homes and cost of living

The median home in Diamond is worth $220,200, above the typical Illinois town ($156,600). Homes cost about 3.0 times the median household income of $73,201, which is more affordable than 21% of Illinois towns. Median rent is $1,357 a month. 80.0% of households own their home.

Census ACS 5-year estimates, 2020–2024. "Typical town" = median of Illinois towns with 500+ people.

Housing	Diamond	Typical Illinois town
Median home value	$220,200	$156,600
Median rent	$1,357	$960
Median household income	$73,201	$72,500
Home value ÷ income	3.0×	2.2×
Homeownership	80.0%	76.6%
Median year built	1991	1967
Seasonal / vacation homes	0.0%	—

Who lives in Diamond

People	Diamond	Typical Illinois town
Median age	35.5	40.4
Age 65 and over	9.7%	18.7%
Under 18	30.3%	—
Bachelor's degree or higher	12.9%	21.8%
Below the poverty line	10.5%	9.9%
Veterans	6.1%	—
Born outside the U.S.	3.7%	—
Work from home	3.0%	8.9%
Average commute	26.3 min	26.1 min
Homes with broadband	86.5%	90.4%

Weather in Diamond

July highs average 84.9°F and January lows 17.0°F. About 37.2 inches of rain and melted snow fall a year, with 18.4 inches of snow (typical Illinois town: 24.2 in). Expect about 21 days a year at 90°F or hotter and 127 nights at or below freezing.

NOAA 1991–2020 climate normals: average daily high and low by month; precipitation and snowfall in inches. Temperatures from the Channahon Dresden Isl Dam station (7.9 mi away).

Tornadoes, storms and disasters

25 tornadoes have passed within 10 miles of Diamond since 1950, compared with 27 for the typical Illinois town. 12 rated (E)F2 or stronger. The strongest, an EF3, struck on June 22, 2015 about 1.2 miles from the town center. Tornadoes within 10 miles have caused 1 deaths and 19 injuries since 1950. The most recent was on July 15, 2024.

NOAA Storm Events Database, tornado tracks (start to end point) passing within 10 miles of the town center, 1950–2026.

Hail of 1 inch or larger has been reported within 10 miles 31 times; the largest was 2.00 inches on July 10, 2013.

Severe weather in Grundy County since 1996

NOAA Storm Events Database, Grundy County, 1996–2026 (all event types recorded since 1996). 6 deaths recorded.

Grundy County has been included in 15 federal disaster or emergency declarations since 1953, most often for flood, tornado, hurricane.

Declared	Incident	Declaration
March 26, 2020	Biological	DR-4489: Covid-19 Pandemic
March 13, 2020	Biological	EM-3435: Covid-19
November 26, 2013	Tornado	DR-4157: Severe Storms, Straight-Line Winds, And Tornadoes
May 10, 2013	Flood	DR-4116: Severe Storms, Straight-Line Winds, And Flooding
March 17, 2011	Snowstorm	DR-1960: Severe Winter Storm And Snowstorm

Jobs and pay in Grundy County

Grundy County had 22,349 jobs in 2024, paying an average of $69,868 a year. Unemployment was 4.6% in 2023; in Diamond itself the ACS puts it at 0.4%.

BLS Quarterly Census of Employment and Wages, 2024, private-sector jobs and average annual pay.

Annual average unemployment rate (BLS Local Area Unemployment Statistics via USDA ERS).

Towns near Diamond

Coal City, IL
1.6 mi · 5,705 people · home $201,600
Braidwood, IL
1.8 mi · 6,194 people · home $202,500
Wilmington, IL
5.3 mi · 5,664 people · home $223,800
Channahon, IL
9.5 mi · 13,383 people · home $327,900
Morris, IL
11.1 mi · 14,163 people · home $247,400
Minooka, IL
11.5 mi · 12,758 people · home $315,600
Dwight, IL
15.7 mi · 4,032 people · home $155,600
Shorewood, IL
16.2 mi · 18,186 people · home $337,800

Diamond questions

Is Diamond, Illinois a good place to retire?

On The Town Files lifestyle rankings, Diamond scores better for retirees than 40% of Illinois towns and quieter than 45%. 9.7% of residents are 65 or older (median age 35.5).

How much does a house cost in Diamond?

The median owner-occupied home in Diamond is valued at $220,200 (Census ACS 2020–2024), against a median household income of $73,201, so homes cost about 3.0 times income. Median rent is $1,357 a month.

What is the weather like in Diamond?

July highs average 84.9°F and January lows 17.0°F (NOAA 1991–2020 normals). It gets about 37.2 inches of precipitation a year and 18.4 inches of snow.

Does Diamond get tornadoes?

25 tornadoes have passed within 10 miles of Diamond since 1950 (NOAA Storm Events); the strongest was an EF3 on June 22, 2015. The typical Illinois town has had 27.

How this page is made. Every number comes from public data, matched to Diamond's Census boundary (GEOID 1719837). Comparisons use the median of Illinois towns with at least 500 people. Weather comes from the nearest NOAA normals station; storm counts use NOAA tornado tracks within 10 miles of the town center.

U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024)
U.S. Census Bureau, 2020 Census and 2025 Gazetteer (2020 / 2025)
NOAA NCEI U.S. Climate Normals (1991–2020)
NOAA NCEI Storm Events Database (1950–2026)
FEMA OpenFEMA Disaster Declarations (this product uses the FEMA OpenFEMA API but is not endorsed by FEMA) (1953–2026)
NCES Common Core of Data (2023–24)
BLS Quarterly Census of Employment and Wages; USDA ERS county unemployment (BLS LAUS) (2000–2024)
The Town Files lifestyle rankings, built from federal demographic, school, crime and housing data (2025)

Data snapshot 2026-11-12.