Lyndon ZIP Codes — Whiteside County, IL

There is one unique ZIP code in Lyndon, Illinois and it is 61261. Area code: 815.

ZIP codes

16.56

sq mi land

0.29

sq mi water

815

area code

Lyndon, IL ZIP code map

About Lyndon, IL

Lyndon, Illinois, is a quaint village located in Whiteside County. Known for its rural charm and tight-knit community, the village offers a peaceful atmosphere for residents and visitors alike. With a single ZIP code of 61261, Lyndon epitomizes small-town America with a welcoming spirit.

Location & geography

Lyndon is situated in northwestern Illinois, surrounded by beautiful landscapes and agricultural land. It is approximately 10 miles from the nearby cities of Sterling and Rock Falls, which offer additional amenities and services. The village covers a land area of 16.56 square miles, complemented by a small water area of 0.29 square miles.

Community & economy

The character of Lyndon is defined by its friendly residents and community-oriented events, creating a welcoming environment. The local economy primarily relies on agriculture, but small businesses also contribute to the daily life of the village. Residents typically enjoy a slower pace of life, with community gatherings and family activities being central to their lifestyle.

Transportation

Lyndon is accessible via nearby highways, with U.S. Route 30 serving as a major thoroughfare for travelers. The nearest significant airport is the Chicago Rockford International Airport, located roughly 30 miles northeast. Public transportation options are limited, making personal vehicles the primary method of transit.

History

Lyndon was founded in the 19th century, with its development closely tied to the arrival of the railroad, which helped stimulate local commerce and agriculture. Key industries have historically included farming and small manufacturing, reflecting the area's rural roots. The village has preserved its small-town ambiance while adapting to modern needs over the years.

Did you know?

A little-known fact about Lyndon is its rich agricultural heritage, which is celebrated with local fairs and events throughout the year. Additionally, the village's quiet charm makes it an ideal spot for birdwatching and exploring the nearby scenic landscapes.

ZIP codes for Lyndon, IL (1)

ZIP code	City	County	Map
61261	Lyndon	Whiteside	View map

Demographics & statistics

644

Population

49.1

Median age

$50,441

Median household income

$30,458

Per capita income

$111,000

Median home value

$1,144

Median monthly rent

79.3%

Home ownership

5.1%

Poverty rate

7.3%

Unemployment

323

Housing units

11.7%

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	100	15.5%
18 and over	544	84.5%
65 and over	162	25.2%
Median age	49.1 years

Race & ethnicity

White 88.8%

Two or more races 5.5%

Hispanic or Latino 4.9%

Black or African American 0.7%

Asian 0.1%

Group	Count	%
White	601	88.8%
Two or more races	37	5.5%
Hispanic or Latino	33	4.9%
Black or African American	5	0.7%
Asian	1	0.1%

Household income

Under $10k 5.2%

$10k–$15k 0.7%

$15k–$25k 9.0%

$25k–$35k 19.7%

$35k–$50k 14.5%

$50k–$75k 20.0%

$75k–$100k 13.1%

$100k–$150k 6.2%

$150k–$200k 11.7%

Range	% of households
Under $10k	5.2%
$10k–$15k	0.7%
$15k–$25k	9.0%
$25k–$35k	19.7%
$35k–$50k	14.5%
$50k–$75k	20.0%
$75k–$100k	13.1%
$100k–$150k	6.2%
$150k–$200k	11.7%
Median income	$50,441

Housing

Home values

Under $50k 16.1%

$50k–$100k 23.0%

$100k–$150k 37.8%

$150k–$200k 8.7%

$200k–$300k 10.4%

$300k–$500k 3.9%

Housing overview

Metric	Value
Median home value	$111,000
Median rent / month	$1,144
Owner occupied	79.3%
Renter occupied	20.7%
Vacant	24.3%
Single-family detached	68.1%
Large apartment buildings	0.0%
Mobile homes	23.8%
Median rooms	5.9
Avg household size (owned)	2.03

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	1.0%
1990–1999	8.9%
1980–1989	20.6%
1970–1979	20.6%
1960–1969	11.2%
1950–1959	12.0%
1940–1949	4.7%
1939 or earlier	20.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.5%
1 bedroom	6.8%
2 bedrooms	31.9%
3 bedrooms	47.5%
4 bedrooms	11.2%
5+ bedrooms	2.1%

Vehicles per household

Vehicles	% of households
No vehicle	3.8%
1 vehicle	25.2%
2 vehicles	28.6%
3 or more	42.4%

Heating fuel

Fuel type	%
Utility gas	83.8%
Electricity	10.3%
Propane / LP gas	5.9%

Households & families

Household type	Count	%
Married-couple family	125	43.1%
Cohabiting couple	13	4.5%
Male householder, no spouse	64	22.1%
Female householder, no spouse	88	30.3%
Households with children under 18	62	21.4%
Households with seniors (65+)	121	41.7%
Average household size	2.22

Marital status

Status	Male	Female
Never married	25.0%	24.6%
Married	51.1%	43.9%
Separated	0.8%	2.0%
Widowed	2.3%	18.6%
Divorced	20.8%	11.0%

Education

Less than 9th grade 1.2%

Some HS, no diploma 13.6%

HS graduate 44.7%

Some college, no degree 22.8%

Associate's degree 6.0%

Bachelor's degree 7.6%

Graduate / professional 4.1%

Metric	%
HS diploma or higher	85.2%
Bachelor's or higher	11.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	3	2.4%
Kindergarten	9	7.3%
Elementary school	54	43.5%
High school	22	17.7%
College / grad school	36	29.0%

Employment

Industry of employment

Manufacturing 20.2%

Education & healthcare 15.7%

Retail trade 13.9%

Construction 8.4%

Public administration 8.4%

Wholesale trade 6.9%

Professional & management 6.0%

Arts, food & hospitality 5.7%

Transportation & utilities 5.4%

Other services 3.9%

Agriculture & mining 3.0%

Finance & real estate 1.5%

Information 0.9%

Occupation

Category	%
Management, business & arts	25.6%
Service	15.7%
Sales & office	19.9%
Natural resources & construction	14.2%
Production & transportation	24.7%

Employment type

Type	%
Private sector	72.9%
Government	14.5%
Self-employed	12.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	80.5%
Carpool	9.1%
Public transit	0.0%
Walk	5.2%
Other means	0.0%
Avg commute (minutes)	30.2

Poverty

All people 5.1%

Under 18 years 5.0%

18 and over 5.1%

Married-couple families 0.8%

Female-led households 15.4%

Income support

Source	% of households
Social Security	44.8%
Retirement income	40.3%
Supplemental Security	5.2%
Cash public assistance	0.0%
Food stamps / SNAP	9.7%

Health indicators

Condition	%
High blood pressure	33.2%
High cholesterol	35.7%
Heart disease	6.3%
Stroke	2.9%
Asthma	9.6%
Arthritis	28.1%
Kidney disease	2.7%
Pulmonary disease	7.1%
Cancer	6.8%

Behavior / access	%
Binge drinking	16.1%
No physical activity	22.8%
Less than 7 hrs sleep	32.8%
Fair or poor health	13.3%
Poor mental health	12.8%
Poor physical health	9.9%
No health insurance	9.4%
Visited doctor (checkup)	77.2%
Visited dentist	65.3%
Cholesterol screening	90.7%
Teeth loss	12.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	69	12.7%

Disability	%
Any disability	20.5%
Under 18	0.0%
18–64 years	10.7%
65 and over	56.2%

Health insurance coverage

Type	%
Private insurance	66.6%
Public insurance	41.0%
Uninsured under 19	6.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	628	97.5%
Spanish	17	2.7%
Other Indo-European	8	1.3%
Asian & Pacific Islander	8	1.3%
Other languages	1	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	627	97.4%
Born in same state	622	96.6%
Born in different state	482	74.8%
Foreign born	5	0.8%
Naturalized citizen	17	2.6%
Not a US citizen	1	5.9%

Ancestry

Ancestry	Count	%
Italian	102	15.8%
Arab	85	13.2%
French	76	11.8%

Ancestry	Count	%
English	54	8.4%
Dutch	4	0.6%
Polish	2	0.3%

Technology access

Metric	% of households
Computer access	45.0%
Internet access	86.9%

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

Frequently asked questions

What ZIP codes does Lyndon, IL have?

Lyndon, IL has one ZIP code: 61261. Each ZIP code serves a distinct delivery area within the city and surrounding region.