ZIP Code 61231

ZIP Code Tabulation Area in Mercer County, Illinois.

Population: 4,958
Median household income: $66,389
Median home value: $141,200

Covering part of Mercer County, Illinois, ZIP Code 61231 has about 4,958 residents. Its median household income of $66,389 runs below the Mercer County figure of $71,710.

From 2019 to 2023, ZIP Code 61231's population declined 4.9% from 5,216 to 4,958, while its median gross rent rose 24.1% from $622 to $772.

Owners occupy 70.2% of the area's occupied homes. The median resident is 42.6 years old.

Demographics

ACS 2019–2023

Population: 4,958
Median age: 42.6 yrs
Median household income: $66,389
Median home value: $141,200
Median gross rent: $772
Housing units: 2,344
Homeownership rate: 70.2%
Bachelor's degree or higher: 22.1%
Unemployment rate: 1.3%

Trends

ACS 5-year · 2019–2023

Population

5,2164,958

Median household income

$54,306$66,389

Median home value

$108,000$141,200

Median gross rent

$622$772

Year	Population	Median household income	Median home value	Median gross rent
2019	5,216	$54,306	$108,000	$622
2020	5,319	$54,150	$110,000	$758
2021	5,096	$54,548	$118,000	$714
2022	5,158	$59,551	$130,800	$767
2023	4,958	$66,389	$141,200	$772

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 56.6%

5 to 1714.8%

18 to 246.9%

25 to 3413.2%

35 to 4411.2%

45 to 5410.4%

55 to 6413.9%

65 to 7413.4%

75 and over9.6%

	Count	Share
Under 5	325	6.6%
5 to 17	736	14.8%
18 to 24	343	6.9%
25 to 34	655	13.2%
35 to 44	555	11.2%
45 to 54	517	10.4%
55 to 64	688	13.9%
65 to 74	663	13.4%
75 and over	476	9.6%

Race & ethnicity

	Count	Share
White (non-Hispanic)	4,626	93.3%
Black or African American	74	1.5%
American Indian & Alaska Native	1	0.0%
Asian	23	0.5%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	0	0.0%
Two or more races	48	1.0%
Hispanic or Latino (any race)	186	3.8%

Educational attainment (age 25+)

No high school diploma5.2%

High school graduate36.8%

Some college or associate's35.8%

Bachelor's degree15.6%

Graduate or professional degree6.5%

	Count	Share
No high school diploma	185	5.2%
High school graduate	1,309	36.8%
Some college or associate's	1,274	35.8%
Bachelor's degree	554	15.6%
Graduate or professional degree	232	6.5%

Commute to work

Mean travel time to work: 21 min

Drove alone85.2%

Carpooled5.4%

Public transit0.0%

Walked2.7%

Bicycle0.0%

Worked from home6.7%

Other means0.0%

How workers get to work

	Count	Share
Drove alone	2,076	85.2%
Carpooled	132	5.4%
Public transit	0	0.0%
Walked	65	2.7%
Bicycle	0	0.0%
Worked from home	164	6.7%
Other means	0	0.0%

Travel time

	Count	Share
Under 15 min	1,239	54.5%
15 to 29 min	241	10.6%
30 to 44 min	342	15.0%
45 to 59 min	326	14.3%
60+ min	125	5.5%

Households

Average household size: 2.30
Poverty rate: 10.0% (482 of 4,799)

	Count	Share
Family households	1,385	66.5%
Nonfamily households	697	33.5%

Housing

Median year structure built: 1957

Occupancy

	Count	Share
Occupied	2,082	88.8%
Vacant	262	11.2%

Tenure (of occupied units)

	Count	Share
Owner-occupied	1,462	70.2%
Renter-occupied	620	29.8%

1-unit, detached81.8%

1-unit, attached1.7%

2 to 4 units8.1%

5 to 19 units2.6%

20 or more units4.6%

Mobile home & other1.1%

Units in structure

	Count	Share
1-unit, detached	1,917	81.8%
1-unit, attached	41	1.7%
2 to 4 units	190	8.1%
5 to 19 units	62	2.6%
20 or more units	108	4.6%
Mobile home & other	26	1.1%

ZIP Code 61231

Demographics

Trends

Age distribution

Race & ethnicity

Educational attainment (age 25+)

Commute to work

Households

Housing

Geography

Counties this ZIP covers

Compare with nearby ZIP codes

National ZIP rankings

Nearby ZIP codes