Aledo ZIP Codes — Mercer County, IL

There is one unique ZIP code in Aledo, Illinois and it is 61231. Area code: 309.

ZIP codes

153.48

sq mi land

0.08

sq mi water

309

area code

Aledo, IL ZIP code map

About Aledo, IL

Aledo is a charming city located in the heart of Mercer County, Illinois. Known for its small-town atmosphere, it offers a blend of rural charm and community spirit. With a rich history and a commitment to growth and development, Aledo is a welcoming place for both residents and visitors.

Location & geography

Situated in western Illinois, Aledo is conveniently located near several other cities, including Galesburg, which is about 27 miles to the east, and Moline, approximately 27 miles to the northwest. The city covers a substantial land area of 153.48 square miles, with a small water area of 0.08 square miles. The surrounding terrain features a mix of agricultural land and scenic views, contributing to the area's picturesque quality.

Community & economy

Aledo is characterized by its close-knit community and friendly residents, making it an inviting place for newcomers. The local economy is supported by agriculture and small businesses, contributing to a vibrant daily life that includes local events and gatherings. Residents enjoy various activities, from community festivals to outdoor recreation, fostering a strong sense of belonging.

Transportation

Highways such as U.S. Route 67 provide convenient access to and from Aledo, connecting it with larger cities in the region. The nearest major airport is located about 30 miles away in Moline, making travel accessible for residents and visitors. Public transport options are limited, emphasizing the city's rural nature.

History

Aledo was founded in the mid-19th century and has since developed a history tied to agriculture and manufacturing. The city played a significant role during the agricultural boom in Illinois, contributing to its early economic growth and development. Over the years, notable events such as the annual Mercer County Fair have highlighted the community's commitment to celebrating its heritage.

Did you know?

One surprising fact about Aledo is that it is the home of the world's largest working windmill, symbolizing the city's embrace of renewable energy. Additionally, the city is known for its vibrant local arts scene, showcasing various cultural events throughout the year.

ZIP codes for Aledo, IL (1)

ZIP code	City	County	Map
61231	Aledo	Mercer	View map

Demographics & statistics

5,158

Population

44.3

Median age

$59,551

Median household income

$32,642

Per capita income

$130,800

Median home value

$767

Median monthly rent

62.8%

Home ownership

8.8%

Poverty rate

1.3%

Unemployment

1,654

Housing units

19.3%

Bachelor's or higher

Age distribution

Male Female

145

Under 5

140

151

5–9

146

140

10–14

137

162

15–19

157

159

20–24

155

304

25–34

295

294

35–44

286

293

45–54

284

209

55–59

203

180

60–64

174

331

65–74

322

160

75–84

156

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,072	20.8%
18 and over	4,086	79.2%
65 and over	1,144	22.2%
Median age	44.3 years

Race & ethnicity

White 93.8%

Two or more races 1.9%

Black or African American 1.7%

Hispanic or Latino 1.5%

Asian 0.8%

Other race 0.3%

Group	Count	%
White	4,911	93.8%
Two or more races	102	1.9%
Black or African American	87	1.7%
Hispanic or Latino	78	1.5%
Asian	44	0.8%
Other race	14	0.3%

Household income

Under $10k 3.7%

$10k–$15k 6.8%

$15k–$25k 10.6%

$25k–$35k 5.3%

$35k–$50k 14.1%

$50k–$75k 19.3%

$75k–$100k 15.7%

$100k–$150k 12.9%

$150k–$200k 9.0%

$200k+ 2.6%

Range	% of households
Under $10k	3.7%
$10k–$15k	6.8%
$15k–$25k	10.6%
$25k–$35k	5.3%
$35k–$50k	14.1%
$50k–$75k	19.3%
$75k–$100k	15.7%
$100k–$150k	12.9%
$150k–$200k	9.0%
$200k+	2.6%
Median income	$59,551

Housing

Home values

Under $50k 6.9%

$50k–$100k 24.0%

$100k–$150k 30.1%

$150k–$200k 16.8%

$200k–$300k 20.4%

$300k–$500k 1.3%

$500k–$1M 0.5%

Housing overview

Metric	Value
Median home value	$130,800
Median rent / month	$767
Owner occupied	62.8%
Renter occupied	37.2%
Vacant	11.5%
Single-family detached	78.8%
Large apartment buildings	6.5%
Mobile homes	1.1%
Median rooms	5.6
Avg household size (owned)	2.51

Year built

Era	%
2020 or later	0.3%
2010–2019	3.1%
2000–2009	7.1%
1990–1999	5.6%
1980–1989	5.6%
1970–1979	15.9%
1960–1969	10.3%
1950–1959	10.3%
1940–1949	12.5%
1939 or earlier	29.3%

Bedrooms

Size	% of units
No bedroom (studio)	5.4%
1 bedroom	6.4%
2 bedrooms	28.7%
3 bedrooms	42.7%
4 bedrooms	14.1%
5+ bedrooms	2.7%

Vehicles per household

Vehicles	% of households
No vehicle	7.2%
1 vehicle	27.9%
2 vehicles	34.7%
3 or more	30.2%

Heating fuel

Fuel type	%
Utility gas	62.4%
Electricity	16.2%
Propane / LP gas	16.9%
Fuel oil	1.3%
Wood	2.4%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	1,186	54.4%
Cohabiting couple	103	4.7%
Male householder, no spouse	303	13.9%
Female householder, no spouse	590	27.0%
Households with children under 18	635	29.1%
Households with seniors (65+)	763	35.0%
Average household size	2.29

Marital status

Status	Male	Female
Never married	32.3%	21.8%
Married	57.3%	58.1%
Separated	0.0%	0.0%
Widowed	5.6%	8.7%
Divorced	4.9%	11.3%

Education

Less than 9th grade 2.1%

Some HS, no diploma 3.3%

HS graduate 35.1%

Some college, no degree 27.1%

Associate's degree 13.1%

Bachelor's degree 13.4%

Graduate / professional 5.9%

Metric	%
HS diploma or higher	94.7%
Bachelor's or higher	19.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	60	6.0%
Kindergarten	87	8.7%
Elementary school	421	42.0%
High school	292	29.1%
College / grad school	142	14.2%

Employment

Industry of employment

Education & healthcare 20.2%

Retail trade 14.2%

Manufacturing 12.7%

Construction 9.7%

Finance & real estate 7.2%

Arts, food & hospitality 7.1%

Transportation & utilities 6.9%

Public administration 5.5%

Other services 5.3%

Professional & management 4.4%

Agriculture & mining 4.3%

Wholesale trade 1.6%

Information 0.9%

Occupation

Category	%
Management, business & arts	28.6%
Service	20.2%
Sales & office	18.1%
Natural resources & construction	15.0%
Production & transportation	18.1%

Employment type

Type	%
Private sector	79.3%
Government	13.6%
Self-employed	6.5%
Unpaid family workers	0.6%

Commute

Method	%
Drive alone	87.7%
Carpool	5.2%
Public transit	0.0%
Walk	2.4%
Other means	0.0%
Avg commute (minutes)	23.6

Poverty

All people 8.8%

Under 18 years 9.0%

18 and over 8.8%

Married-couple families 4.7%

Female-led households 6.2%

Income support

Source	% of households
Social Security	37.5%
Retirement income	26.5%
Supplemental Security	3.5%
Cash public assistance	1.1%
Food stamps / SNAP	12.9%

Health indicators

Condition	%
High blood pressure	36.3%
High cholesterol	35.3%
Heart disease	8.0%
Stroke	3.6%
Asthma	9.5%
Arthritis	30.3%
Kidney disease	3.3%
Pulmonary disease	8.1%
Cancer	8.6%

Behavior / access	%
Binge drinking	14.2%
No physical activity	26.2%
Less than 7 hrs sleep	31.0%
Fair or poor health	14.9%
Poor mental health	12.2%
Poor physical health	10.5%
No health insurance	10.1%
Visited doctor (checkup)	77.8%
Visited dentist	62.2%
Cholesterol screening	91.0%
Teeth loss	14.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	347	8.5%

Disability	%
Any disability	14.3%
Under 18	3.0%
18–64 years	11.0%
65 and over	34.3%

Health insurance coverage

Type	%
Private insurance	72.4%
Public insurance	37.9%
Uninsured under 19	3.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	4,873	94.5%
Spanish	75	1.5%
Other Indo-European	42	0.9%
Asian & Pacific Islander	11	0.2%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	5,095	98.8%
Born in same state	5,071	98.3%
Born in different state	3,784	73.4%
Foreign born	24	0.5%
Naturalized citizen	63	1.2%
Not a US citizen	63	100.0%

Ancestry

Ancestry	Count	%
Italian	508	9.8%
French	438	8.5%
Arab	221	4.3%
English	55	1.1%

Ancestry	Count	%
Dutch	38	0.7%
German	16	0.3%
Polish	16	0.3%

Technology access

Metric	% of households
Computer access	42.3%
Internet access	89.1%

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

Frequently asked questions

What ZIP codes does Aledo, IL have?

Aledo, IL has one ZIP code: 61231. Each ZIP code serves a distinct delivery area within the city and surrounding region.