Dennison ZIP Codes — Clark County, IL
There is one unique ZIP code in Dennison, Illinois and it is 62423. Area code: 217.
1
ZIP codes
24.36
sq mi land
0.02
sq mi water
217
area code
Dennison, IL ZIP code map
ZIP codes for Dennison, IL (1)
Demographics & statistics
843
Population
34.9
Median age
$75,568
Median household income
$29,012
Per capita income
$145,500
Median home value
$0
Median monthly rent
93.9%
Home ownership
14.7%
Poverty rate
7.8%
Unemployment
305
Housing units
50.8%
Bachelor's or higher
Age distribution
Male
Female
15
Under 5
13
112
5–9
96
38
15–19
32
2
20–24
2
64
25–34
54
85
35–44
73
34
45–54
30
6
55–59
5
26
60–64
22
31
65–74
27
41
75–84
35
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 285 | 33.8% |
| 18 and over | 558 | 66.2% |
| 65 and over | 134 | 15.9% |
| Median age | 34.9 years | |
Race & ethnicity
White
98.9%
Two or more races
1.1%
| Group | Count | % |
|---|---|---|
| White | 834 | 98.9% |
| Two or more races | 9 | 1.1% |
Household income
Under $10k
13.5%
$10k–$15k
5.5%
$25k–$35k
5.8%
$35k–$50k
16.7%
$50k–$75k
7.7%
$75k–$100k
27.0%
$100k–$150k
10.3%
$150k–$200k
9.3%
$200k+
4.2%
| Range | % of households |
|---|---|
| Under $10k | 13.5% |
| $10k–$15k | 5.5% |
| $25k–$35k | 5.8% |
| $35k–$50k | 16.7% |
| $50k–$75k | 7.7% |
| $75k–$100k | 27.0% |
| $100k–$150k | 10.3% |
| $150k–$200k | 9.3% |
| $200k+ | 4.2% |
| Median income | $75,568 |
Housing
Home values
Under $50k
13.4%
$100k–$150k
41.8%
$150k–$200k
23.6%
$200k–$300k
17.5%
$300k–$500k
3.8%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $145,500 |
| Median rent / month | $0 |
| Owner occupied | 93.9% |
| Renter occupied | 6.1% |
| Vacant | 4.0% |
| Single-family detached | 77.5% |
| Large apartment buildings | 0.0% |
| Mobile homes | 17.0% |
| Median rooms | 5.7 |
| Avg household size (owned) | 2.81 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 16.0% |
| 2000–2009 | 39.5% |
| 1990–1999 | 11.7% |
| 1980–1989 | 10.5% |
| 1970–1979 | 14.2% |
| 1960–1969 | 0.0% |
| 1950–1959 | 4.0% |
| 1940–1949 | 4.0% |
| 1939 or earlier | 0.0% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 5.2% |
| 1 bedroom | 5.6% |
| 2 bedrooms | 22.8% |
| 3 bedrooms | 49.4% |
| 4 bedrooms | 17.0% |
| 5+ bedrooms | 0.0% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 1.3% |
| 1 vehicle | 1.9% |
| 2 vehicles | 42.4% |
| 3 or more | 54.3% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 7.7% |
| Electricity | 34.7% |
| Propane / LP gas | 57.6% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 232 | 74.6% |
| Cohabiting couple | 13 | 4.2% |
| Male householder, no spouse | 6 | 1.9% |
| Female householder, no spouse | 60 | 19.3% |
| Households with children under 18 | 176 | 56.6% |
| Households with seniors (65+) | 85 | 27.3% |
| Average household size | 2.71 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 15.6% | 21.8% |
| Married | 77.7% | 72.6% |
| Separated | 0.0% | 0.0% |
| Widowed | 2.1% | 5.5% |
| Divorced | 4.6% | 0.0% |
Education
Less than 9th grade
0.0%
Some HS, no diploma
14.8%
HS graduate
14.3%
Some college, no degree
8.3%
Associate's degree
11.8%
Bachelor's degree
42.8%
Graduate / professional
8.1%
| Metric | % |
|---|---|
| HS diploma or higher | 85.2% |
| Bachelor's or higher | 50.8% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 0 | 0.0% |
| Kindergarten | 25 | 8.6% |
| Elementary school | 124 | 42.5% |
| High school | 49 | 16.8% |
| College / grad school | 94 | 32.2% |
Employment
Industry of employment
Transportation & utilities
43.0%
Manufacturing
26.6%
Education & healthcare
11.0%
Public administration
9.3%
Other services
4.6%
Retail trade
3.4%
Arts, food & hospitality
2.1%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 32.1% |
| Service | 2.1% |
| Sales & office | 3.4% |
| Natural resources & construction | 30.0% |
| Production & transportation | 32.5% |
Employment type
| Type | % |
|---|---|
| Private sector | 75.9% |
| Government | 19.4% |
| Self-employed | 4.6% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 100.0% |
| Carpool | 0.0% |
| Public transit | 0.0% |
| Walk | 0.0% |
| Other means | 0.0% |
| Avg commute (minutes) | 35.4 |
Poverty
All people
14.7%
Under 18 years
16.5%
18 and over
13.8%
Married-couple families
7.3%
Female-led households
100.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 37.0% |
| Retirement income | 11.3% |
| Supplemental Security | 5.5% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 19.0% |
Health indicators
| Condition | % |
|---|---|
| High blood pressure | 32.2% |
| High cholesterol | 32.9% |
| Heart disease | 6.1% |
| Stroke | 2.8% |
| Asthma | 9.3% |
| Arthritis | 25.7% |
| Kidney disease | 2.6% |
| Pulmonary disease | 6.6% |
| Cancer | 6.8% |
| Behavior / access | % |
|---|---|
| Binge drinking | 16.1% |
| No physical activity | 23.1% |
| Less than 7 hrs sleep | 32.9% |
| Fair or poor health | 12.6% |
| Poor mental health | 12.4% |
| Poor physical health | 9.3% |
| No health insurance | 9.5% |
| Visited doctor (checkup) | 75.8% |
| Visited dentist | 66.0% |
| Cholesterol screening | 90.7% |
| Teeth loss | 12.8% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 55 | 10.1% |
| Disability | % |
|---|---|
| Any disability | 11.6% |
| Under 18 | 0.0% |
| 18–64 years | 19.0% |
| 65 and over | 13.4% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 84.3% |
| Public insurance | 32.2% |
| Uninsured under 19 | 0.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 815 | 96.7% |
| Spanish | 0 | 0.0% |
| Other Indo-European | 0 | 0.0% |
| Asian & Pacific Islander | 0 | 0.0% |
| Other languages | 0 | 0.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 843 | 100.0% |
| Born in same state | 843 | 100.0% |
| Born in different state | 378 | 44.8% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 0 | 0.0% |
| Not a US citizen | 0 | 0.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 100 | 11.9% |
| English | 55 | 6.5% |
| French | 36 | 4.3% |
| Ancestry | Count | % |
|---|---|---|
| Arab | 18 | 2.1% |
| German | 13 | 1.5% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 36.9% |
| Internet access | 83.9% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.