61728 ZIP Code — Colfax, IL

Mclean County, Illinois

ZIP code 61728 is located in Colfax, Illinois, within Mclean County. It covers approximately 69.43 square miles and serves a population of 1,301 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 309.

About ZIP code 61728

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $143,200. Owner-occupancy sits near the national average at 74%.

The gap between median ($73,705) and mean household income suggests income inequality — a small number of higher earners pull the average up. SNAP benefit usage at 18% of households reflects economic stress in the area.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 26 minutes is near the national average.

Educational attainment is near the national average, with 31% of residents holding a bachelor's degree or higher.

1,301

population

69.43

sq mi land

Standard

ZIP type

Central (CT)

timezone

61728 ZIP code map

Cities in ZIP code 61728

Below are the cities the US Postal Service accepts for ZIP code 61728. Using any city not on this list may result in mail delivery delays.

City	Status
Colfax	Preferred

Nearby ZIP codes

61731 Cropsey (6.2 mi) 61720 Anchor (6.8 mi) 61730 Cooksville (6.9 mi) 61753 Lexington (9.5 mi) 61726 Chenoa (10 mi) 61737 Ellsworth (11.3 mi) 61739 Fairbury (11.3 mi) 61770 Saybrook (11.7 mi) 61773 Sibley (12.8 mi) 61722 Arrowsmith (12.9 mi) 61775 Strawn (13.1 mi) 61776 Towanda (13.5 mi)

Demographics updated 05/2026

Population
Total population	1,301
Population density	19 / sq mi
State FIPS	17
County FIPS	113

Geography
Land area	69.43 sq mi
Water area	0.02 sq mi
Latitude	40.5783
Longitude	-88.6286
Timezone	Central (CT)
Area code	309

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	36.1%	38.5%	37.2%
$50k – $100k	34.7%	29.6%	29.6%
$100k – $200k	25.7%	24.8%	24.4%
Over $200k	3.5%	7.1%	8.8%

Demographics & statistics

1,301

Population

People per sq mi

36.5

Median age

$73,705

Median household income

$43,158

Per capita income

$143,200

Median home value

$789

Median monthly rent

73.6%

Home ownership

9.9%

Poverty rate

5.0%

Unemployment

399

Housing units

30.6%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

119

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	322	24.8%
18 and over	979	75.2%
65 and over	257	19.8%
Median age	36.5 years

Race & ethnicity

White 96.7%

Hispanic or Latino 1.2%

Other race 1.2%

Two or more races 0.8%

Group	Count	%
White	1,274	96.7%
Hispanic or Latino	16	1.2%
Other race	16	1.2%
Two or more races	11	0.8%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	36.1%	38.5%	37.2%
$50k – $100k	34.7%	29.6%	29.6%
$100k – $200k	25.7%	24.8%	24.4%
Over $200k	3.5%	7.1%	8.8%

Under $10k 5.5%

$10k–$15k 4.3%

$15k–$25k 0.8%

$25k–$35k 4.5%

$35k–$50k 10.4%

$50k–$75k 27.4%

$75k–$100k 11.2%

$100k–$150k 12.9%

$150k–$200k 12.3%

$200k+ 10.6%

Range	% of households
Under $10k	5.5%
$10k–$15k	4.3%
$15k–$25k	0.8%
$25k–$35k	4.5%
$35k–$50k	10.4%
$50k–$75k	27.4%
$75k–$100k	11.2%
$100k–$150k	12.9%
$150k–$200k	12.3%
$200k+	10.6%
Median income	$73,705

Housing

Home values

Under $50k 4.7%

$50k–$100k 18.6%

$100k–$150k 29.2%

$150k–$200k 17.5%

$200k–$300k 14.7%

$300k–$500k 8.3%

$500k–$1M 6.9%

Housing overview

Metric	Value
Median home value	$143,200
Median rent / month	$789
Owner occupied	73.6%
Renter occupied	26.4%
Vacant	7.4%
Single-family detached	93.9%
Large apartment buildings	0.0%
Mobile homes	0.8%
Median rooms	6.4
Avg household size (owned)	2.62

Year built

Era	%
2020 or later	0.0%
2010–2019	1.3%
2000–2009	9.8%
1990–1999	4.7%
1980–1989	2.5%
1970–1979	13.1%
1960–1969	7.2%
1950–1959	14.4%
1940–1949	7.8%
1939 or earlier	39.2%

Bedrooms

Size	% of units
No bedroom (studio)	1.1%
1 bedroom	5.9%
2 bedrooms	22.7%
3 bedrooms	37.3%
4 bedrooms	26.9%
5+ bedrooms	6.1%

Vehicles per household

Vehicles	% of households
No vehicle	3.5%
1 vehicle	23.9%
2 vehicles	37.4%
3 or more	35.2%

Heating fuel

Fuel type	%
Utility gas	65.6%
Electricity	9.6%
Propane / LP gas	18.6%

Households & families

Household type	Count	%
Married-couple family	251	51.3%
Cohabiting couple	91	18.6%
Male householder, no spouse	93	19.0%
Female householder, no spouse	54	11.0%
Households with children under 18	163	33.3%
Households with seniors (65+)	144	29.4%
Average household size	2.60

Marital status

Status	Male	Female
Never married	32.5%	24.1%
Married	53.1%	48.1%
Separated	0.0%	0.0%
Widowed	2.0%	9.2%
Divorced	12.4%	18.6%

Education

Less than 9th grade 0.0%

Some HS, no diploma 3.3%

HS graduate 33.6%

Some college, no degree 22.6%

Associate's degree 9.9%

Bachelor's degree 24.2%

Graduate / professional 6.4%

Metric	%
HS diploma or higher	96.7%
Bachelor's or higher	30.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	13	4.0%
Kindergarten	5	1.6%
Elementary school	181	56.4%
High school	58	18.1%
College / grad school	64	19.9%

Employment

Industry of employment

Education & healthcare 18.8%

Retail trade 18.0%

Construction 12.6%

Transportation & utilities 11.4%

Finance & real estate 9.0%

Professional & management 6.8%

Other services 6.5%

Manufacturing 5.3%

Arts, food & hospitality 5.1%

Public administration 2.9%

Agriculture & mining 2.1%

Wholesale trade 1.7%

Occupation

Category	%
Management, business & arts	37.1%
Service	15.0%
Sales & office	19.7%
Natural resources & construction	17.1%
Production & transportation	11.1%

Employment type

Type	%
Private sector	79.0%
Government	17.6%
Self-employed	3.5%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	84.8%
Carpool	2.9%
Public transit	0.0%
Walk	3.8%
Work from home	7.1%
Other means	1.4%
Avg commute (minutes)	25.6

Poverty

All people 9.9%

Under 18 years 10.3%

18 and over 9.7%

Married-couple families 3.6%

Female-led households 39.1%

Income support

Source	% of households
Social Security	28.0%
Retirement income	19.2%
Supplemental Security	1.2%
Cash public assistance	1.2%
Food stamps / SNAP	18.2%

Health indicators

Condition	%
Obesity	37.2%
High blood pressure	34.3%
High cholesterol	33.1%
Diabetes	10.4%
Heart disease	7.2%
Stroke	3.4%
Asthma	9.7%
Arthritis	28.0%
Kidney disease	3.1%
Pulmonary disease	7.8%
Cancer	7.4%

Behavior / access	%
Smoking	19.2%
Binge drinking	14.8%
No physical activity	26.3%
Less than 7 hrs sleep	31.8%
Depression	17.4%
Fair or poor health	15.0%
Poor mental health	12.9%
Poor physical health	10.5%
No health insurance	10.3%
Visited doctor (checkup)	76.6%
Visited dentist	60.6%
Cholesterol screening	89.8%
Teeth loss	15.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	97	9.9%

Disability	%
Any disability	7.8%
Under 18	0.0%
18–64 years	6.5%
65 and over	23.1%

Health insurance coverage

Type	%
Private insurance	74.2%
Public insurance	39.6%
No insurance	2.7%
Uninsured under 19	3.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,230	94.5%
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)	1,277	98.2%
Born in same state	1,277	98.2%
Born in different state	1,095	84.2%
Foreign born	0	0.0%
Naturalized citizen	24	1.8%
Not a US citizen	18	75.0%

Ancestry

Ancestry	Count	%
French	171	13.1%
Italian	168	12.9%
Arab	87	6.7%
English	57	4.4%

Ancestry	Count	%
Dutch	10	0.8%
Polish	6	0.5%
Irish	2	0.2%
Norwegian	2	0.2%

Technology access

Metric	% of households
Computer access	37.6%
Internet access	95.1%

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

Frequently asked questions about ZIP code 61728

What city is ZIP code 61728 in?

ZIP code 61728 is primarily assigned to Colfax, Illinois.

What county is ZIP code 61728 in?

ZIP code 61728 falls within Mclean County, Illinois.

What is the typical home value in ZIP code 61728?

The median home value in ZIP code 61728 is $143,200.

Does ZIP code 61728 have a large veteran population?

10% of civilians in ZIP code 61728 are veterans, above the national average of ~7%.

What is the population of ZIP code 61728?

ZIP code 61728 has an estimated population of 1,301 residents, with a density of 19 people per square mile.

What is the median household income in ZIP code 61728?

The median household income in ZIP code 61728 is $73,705, below the national median of ~$75,000.

What timezone is ZIP code 61728 in?

ZIP code 61728 observes the CST timezone.