Dahlgren ZIP Codes — Hamilton County, IL

There is one unique ZIP code in Dahlgren, Illinois and it is 62828. Area code: 618.

ZIP codes

82.72

sq mi land

0.11

sq mi water

618

area code

Dahlgren, IL ZIP code map

About Dahlgren, IL

Dahlgren, Illinois, is a small but charming city located in Hamilton County. With its quaint atmosphere and friendly residents, it offers a glimpse into the heart of rural Midwestern life. The city's compact size and serene surroundings make it an ideal spot for those seeking a peaceful lifestyle away from the hustle and bustle of urban areas.

Location & geography

Dahlgren is situated in the southern part of Illinois, surrounded by lush landscapes and open farmland. It is located near several other cities, including McLeansboro approximately 12 miles to the north, and Fairfield about 19 miles to the east. The city spans a total land area of 82.72 square miles, with a small water area of 0.11 square miles, making it predominantly land-based.

Community & economy

The character of Dahlgren is deeply rooted in community values and agricultural traditions. Many residents are involved in farming and related industries, which play a significant role in the local economy. Daily life in Dahlgren is relaxed, with a strong sense of community fostered by local events and gatherings.

Transportation

Transportation in Dahlgren is facilitated by several local roads and highways, including Illinois Route 142, which provides access to neighboring towns. The nearest major airport is Greater Peoria Regional Airport, located about 75 miles to the north. Currently, public transit options are limited, making personal vehicles the primary mode of transportation.

History

Dahlgren was founded in the late 19th century and has a rich history tied to agriculture and local industry. Throughout its development, the city has primarily relied on farming as a key industry while celebrating significant community events that enhance its cultural heritage. Over the years, Dahlgren has maintained its small-town charm while adapting to the changes around it.

Did you know?

One surprising fact about Dahlgren is that it has only one ZIP code, 62828, which serves as a marker of its size and community closeness. Additionally, Dahlgren is characterized by its expansive rural landscapes, providing a peaceful retreat for nature lovers and outdoor enthusiasts.

ZIP codes for Dahlgren, IL (1)

ZIP code	City	County	Map
62828	Dahlgren	Hamilton	View map

Demographics & statistics

1,359

Population

40.5

Median age

$71,250

Median household income

$28,644

Per capita income

$128,800

Median home value

$693

Median monthly rent

86.1%

Home ownership

14.5%

Poverty rate

6.3%

Unemployment

519

Housing units

17.0%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	409	30.1%
18 and over	950	69.9%
65 and over	251	18.5%
Median age	40.5 years

Race & ethnicity

White 99.3%

Asian 0.7%

Group	Count	%
White	1,350	99.3%
Asian	9	0.7%

Household income

Under $10k 6.0%

$10k–$15k 5.6%

$15k–$25k 4.4%

$25k–$35k 2.6%

$35k–$50k 17.5%

$50k–$75k 15.3%

$75k–$100k 16.1%

$100k–$150k 26.2%

$150k–$200k 4.4%

$200k+ 2.2%

Range	% of households
Under $10k	6.0%
$10k–$15k	5.6%
$15k–$25k	4.4%
$25k–$35k	2.6%
$35k–$50k	17.5%
$50k–$75k	15.3%
$75k–$100k	16.1%
$100k–$150k	26.2%
$150k–$200k	4.4%
$200k+	2.2%
Median income	$71,250

Housing

Home values

Under $50k 22.4%

$50k–$100k 21.2%

$100k–$150k 19.1%

$150k–$200k 10.4%

$200k–$300k 17.7%

$300k–$500k 4.8%

$500k–$1M 4.1%

$1M+ 0.2%

Housing overview

Metric	Value
Median home value	$128,800
Median rent / month	$693
Owner occupied	86.1%
Renter occupied	13.9%
Vacant	14.4%
Single-family detached	82.0%
Large apartment buildings	0.0%
Mobile homes	17.8%
Median rooms	5.7
Avg household size (owned)	2.71

Year built

Era	%
2020 or later	0.7%
2010–2019	9.8%
2000–2009	7.1%
1990–1999	11.4%
1980–1989	14.6%
1970–1979	13.1%
1960–1969	8.8%
1950–1959	0.5%
1940–1949	10.5%
1939 or earlier	23.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	4.1%
2 bedrooms	29.5%
3 bedrooms	55.0%
4 bedrooms	9.3%
5+ bedrooms	2.0%

Vehicles per household

Vehicles	% of households
No vehicle	2.2%
1 vehicle	19.0%
2 vehicles	42.3%
3 or more	36.5%

Heating fuel

Fuel type	%
Utility gas	34.9%
Electricity	15.3%
Propane / LP gas	42.9%
Wood	1.8%

Households & families

Household type	Count	%
Married-couple family	248	49.2%
Cohabiting couple	24	4.8%
Male householder, no spouse	127	25.2%
Female householder, no spouse	105	20.8%
Households with children under 18	188	37.3%
Households with seniors (65+)	164	32.5%
Average household size	2.70

Marital status

Status	Male	Female
Never married	22.9%	23.0%
Married	59.2%	50.4%
Separated	0.0%	2.8%
Widowed	5.8%	13.0%
Divorced	12.0%	10.9%

Education

Less than 9th grade 5.9%

Some HS, no diploma 10.0%

HS graduate 33.6%

Some college, no degree 13.7%

Associate's degree 19.7%

Bachelor's degree 11.1%

Graduate / professional 5.9%

Metric	%
HS diploma or higher	84.1%
Bachelor's or higher	17.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	14	4.7%
Kindergarten	18	6.1%
Elementary school	183	61.8%
High school	32	10.8%
College / grad school	49	16.6%

Employment

Industry of employment

Education & healthcare 19.1%

Manufacturing 18.7%

Agriculture & mining 12.7%

Wholesale trade 11.8%

Finance & real estate 8.9%

Retail trade 6.5%

Professional & management 5.5%

Arts, food & hospitality 5.1%

Public administration 4.2%

Transportation & utilities 3.1%

Construction 2.7%

Other services 1.3%

Information 0.4%

Occupation

Category	%
Management, business & arts	35.1%
Service	8.7%
Sales & office	22.4%
Natural resources & construction	15.3%
Production & transportation	18.5%

Employment type

Type	%
Private sector	79.1%
Government	11.8%
Self-employed	9.1%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	88.5%
Carpool	2.4%
Public transit	0.4%
Walk	0.0%
Other means	0.0%
Avg commute (minutes)	23.4

Poverty

All people 14.5%

Under 18 years 24.1%

18 and over 10.4%

Married-couple families 2.0%

Female-led households 56.6%

Income support

Source	% of households
Social Security	34.1%
Retirement income	26.4%
Supplemental Security	2.6%
Cash public assistance	0.0%
Food stamps / SNAP	20.0%

Health indicators

Condition	%
High blood pressure	35.4%
High cholesterol	35.1%
Heart disease	7.2%
Stroke	3.4%
Asthma	10.1%
Arthritis	28.9%
Kidney disease	3.1%
Pulmonary disease	8.3%
Cancer	7.4%

Behavior / access	%
Binge drinking	14.8%
No physical activity	25.7%
Less than 7 hrs sleep	32.1%
Fair or poor health	15.5%
Poor mental health	13.3%
Poor physical health	10.9%
No health insurance	10.9%
Visited doctor (checkup)	76.9%
Visited dentist	62.7%
Cholesterol screening	89.9%
Teeth loss	15.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	80	8.4%

Disability	%
Any disability	18.4%
Under 18	2.7%
18–64 years	14.2%
65 and over	55.8%

Health insurance coverage

Type	%
Private insurance	71.7%
Public insurance	38.9%
Uninsured under 19	0.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,191	87.6%
Spanish	9	0.8%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	9	0.8%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,353	99.6%
Born in same state	1,353	99.6%
Born in different state	1,090	80.2%
Foreign born	0	0.0%
Naturalized citizen	6	0.4%
Not a US citizen	6	100.0%

Ancestry

Ancestry	Count	%
Italian	260	19.1%
French	194	14.3%

Ancestry	Count	%
Arab	155	11.4%
Polish	4	0.3%

Technology access

Metric	% of households
Computer access	37.1%
Internet access	88.3%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Dahlgren, IL have?

Dahlgren, IL has one ZIP code: 62828. Each ZIP code serves a distinct delivery area within the city and surrounding region.