61740 ZIP Code — Flanagan, IL

Livingston County, Illinois

ZIP code 61740 is located in Flanagan, Illinois, within Livingston County. It covers approximately 70.24 square miles and serves a population of 1,556 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 815.

About ZIP code 61740

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 $132,200. Owner-occupancy is high at 84%, well above the national average.

The gap between median ($77,179) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 7% is below the national average. 40% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 23 minutes is near the national average.

Educational attainment is near the national average, with 22% of residents holding a bachelor's degree or higher.

Overall, ZIP code 61740 reflects a community defined by high homeownership and a significant Social Security-dependent population.

1,556

population

70.24

sq mi land

Standard

ZIP type

Central (CT)

timezone

61740 ZIP code map

Cities in ZIP code 61740

Below are the cities the US Postal Service accepts for ZIP code 61740. Using any city not on this list may result in mail delivery delays.

City	Status
Flanagan	Acceptable
Flanagan	Preferred

Nearby ZIP codes

61743 Graymont (4.2 mi) 61333 Long Point (6.5 mi) 61321 Dana (9.1 mi) 61319 Cornell (10.2 mi) 61358 Rutland (10.6 mi) 61760 Minonk (10.6 mi) 61311 Ancona (10.8 mi) 61764 Pontiac (12 mi) 61738 El Paso (12.3 mi) 61744 Gridley (12.3 mi) 61516 Benson (13.6 mi) 61377 Wenona (13.9 mi)

Demographics updated 05/2026

Population
Total population	1,556
Population density	22 / sq mi
State FIPS	17
County FIPS	105

Geography
Land area	70.24 sq mi
Water area	0.00 sq mi
Latitude	40.8862
Longitude	-88.8634
Timezone	Central (CT)
Area code	815

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	34.9%	41.5%	37.2%
$50k – $100k	29.3%	34.5%	29.6%
$100k – $200k	32.0%	21.2%	24.4%
Over $200k	3.8%	2.8%	8.8%

Demographics & statistics

1,556

Population

People per sq mi

41.4

Median age

$77,179

Median household income

$43,175

Per capita income

$132,200

Median home value

$837

Median monthly rent

83.6%

Home ownership

6.7%

Poverty rate

5.2%

Unemployment

609

Housing units

21.5%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

102

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	370	23.8%
18 and over	1,186	76.2%
65 and over	374	24.0%
Median age	41.4 years

Race & ethnicity

White 95.4%

Two or more races 2.3%

Hispanic or Latino 1.1%

Asian 0.6%

Other race 0.4%

Black or African American 0.3%

Group	Count	%
White	1,501	95.4%
Two or more races	36	2.3%
Hispanic or Latino	17	1.1%
Asian	9	0.6%
Other race	6	0.4%
Black or African American	4	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	34.9%	41.5%	37.2%
$50k – $100k	29.3%	34.5%	29.6%
$100k – $200k	32.0%	21.2%	24.4%
Over $200k	3.8%	2.8%	8.8%

Under $10k 4.8%

$10k–$15k 3.5%

$15k–$25k 5.1%

$25k–$35k 6.8%

$35k–$50k 7.1%

$50k–$75k 17.7%

$75k–$100k 19.5%

$100k–$150k 13.2%

$150k–$200k 10.2%

$200k+ 12.1%

Range	% of households
Under $10k	4.8%
$10k–$15k	3.5%
$15k–$25k	5.1%
$25k–$35k	6.8%
$35k–$50k	7.1%
$50k–$75k	17.7%
$75k–$100k	19.5%
$100k–$150k	13.2%
$150k–$200k	10.2%
$200k+	12.1%
Median income	$77,179

Housing

Home values

Under $50k 2.8%

$50k–$100k 29.1%

$100k–$150k 32.8%

$150k–$200k 18.8%

$200k–$300k 14.2%

$300k–$500k 2.4%

Housing overview

Metric	Value
Median home value	$132,200
Median rent / month	$837
Owner occupied	83.6%
Renter occupied	16.4%
Vacant	14.5%
Single-family detached	87.1%
Large apartment buildings	0.4%
Mobile homes	0.0%
Median rooms	6.3
Avg household size (owned)	2.42

Year built

Era	%
2020 or later	0.0%
2010–2019	3.1%
2000–2009	1.0%
1990–1999	4.4%
1980–1989	2.1%
1970–1979	6.2%
1960–1969	15.1%
1950–1959	12.7%
1940–1949	7.5%
1939 or earlier	47.9%

Bedrooms

Size	% of units
No bedroom (studio)	1.0%
1 bedroom	1.1%
2 bedrooms	29.2%
3 bedrooms	42.8%
4 bedrooms	23.3%
5+ bedrooms	2.5%

Vehicles per household

Vehicles	% of households
No vehicle	2.1%
1 vehicle	35.7%
2 vehicles	28.6%
3 or more	33.6%

Heating fuel

Fuel type	%
Utility gas	57.2%
Electricity	11.7%
Propane / LP gas	30.4%
Wood	0.7%

Households & families

Household type	Count	%
Married-couple family	333	55.0%
Cohabiting couple	16	2.6%
Male householder, no spouse	139	23.0%
Female householder, no spouse	117	19.3%
Households with children under 18	209	34.5%
Households with seniors (65+)	226	37.4%
Average household size	2.42

Marital status

Status	Male	Female
Never married	22.6%	17.7%
Married	60.1%	51.8%
Separated	0.5%	0.0%
Widowed	5.4%	17.8%
Divorced	11.5%	12.7%

Education

Less than 9th grade 1.9%

Some HS, no diploma 3.0%

HS graduate 43.6%

Some college, no degree 19.6%

Associate's degree 10.4%

Bachelor's degree 15.2%

Graduate / professional 6.3%

Metric	%
HS diploma or higher	95.1%
Bachelor's or higher	21.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	29	6.9%
Kindergarten	12	2.9%
Elementary school	227	54.2%
High school	78	18.6%
College / grad school	73	17.4%

Employment

Industry of employment

Education & healthcare 19.8%

Agriculture & mining 17.1%

Manufacturing 16.6%

Construction 8.5%

Finance & real estate 6.9%

Transportation & utilities 6.1%

Professional & management 5.7%

Retail trade 5.2%

Arts, food & hospitality 4.6%

Other services 4.6%

Public administration 3.4%

Wholesale trade 1.7%

Occupation

Category	%
Management, business & arts	35.9%
Service	17.8%
Sales & office	16.0%
Natural resources & construction	13.9%
Production & transportation	16.4%

Employment type

Type	%
Private sector	76.3%
Government	13.2%
Self-employed	10.2%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	77.1%
Carpool	4.1%
Public transit	0.4%
Walk	0.8%
Work from home	16.5%
Other means	1.1%
Avg commute (minutes)	23.0

Poverty

All people 6.7%

Under 18 years 4.4%

18 and over 7.5%

Married-couple families 1.8%

Female-led households 11.5%

Income support

Source	% of households
Social Security	39.5%
Retirement income	29.4%
Supplemental Security	1.7%
Cash public assistance	2.0%
Food stamps / SNAP	12.2%

Health indicators

Condition	%
Obesity	32.6%
High blood pressure	37.4%
High cholesterol	36.6%
Diabetes	11.0%
Heart disease	8.3%
Stroke	3.8%
Asthma	9.5%
Arthritis	31.3%
Kidney disease	3.5%
Pulmonary disease	8.3%
Cancer	9.0%

Behavior / access	%
Smoking	17.0%
Binge drinking	13.7%
No physical activity	26.1%
Less than 7 hrs sleep	30.1%
Depression	17.1%
Fair or poor health	15.3%
Poor mental health	12.1%
Poor physical health	10.6%
No health insurance	10.2%
Visited doctor (checkup)	78.9%
Visited dentist	66.4%
Cholesterol screening	91.1%
Teeth loss	15.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	99	8.3%

Disability	%
Any disability	13.8%
Under 18	6.2%
18–64 years	7.4%
65 and over	39.8%

Health insurance coverage

Type	%
Private insurance	67.8%
Public insurance	47.2%
No insurance	2.5%
Uninsured under 19	1.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,488	95.6%
Spanish	20	1.3%
Other Indo-European	20	1.3%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,525	98.0%
Born in same state	1,521	97.8%
Born in different state	1,410	90.6%
Foreign born	4	0.3%
Naturalized citizen	31	2.0%
Not a US citizen	17	54.8%

Ancestry

Ancestry	Count	%
French	215	13.8%
Italian	154	9.9%
Arab	124	8%

Ancestry	Count	%
Polish	42	2.7%
English	9	0.6%
Dutch	5	0.3%

Technology access

Metric	% of households
Computer access	38.9%
Internet access	94.9%

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

Frequently asked questions about ZIP code 61740

What city is ZIP code 61740 in?

ZIP code 61740 is primarily assigned to Flanagan, Illinois.

What county is ZIP code 61740 in?

ZIP code 61740 falls within Livingston County, Illinois.

Is ZIP code 61740 mostly owner-occupied?

84% of occupied units in ZIP code 61740 are owner-occupied, well above the national average.

Does ZIP code 61740 have a large retiree population?

40% of households in ZIP code 61740 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 61740?

The median home value in ZIP code 61740 is $132,200.

What is the population of ZIP code 61740?

ZIP code 61740 has an estimated population of 1,556 residents, with a density of 22 people per square mile.

What timezone is ZIP code 61740 in?

ZIP code 61740 observes the CST timezone.