61251 ZIP Code — Fenton, IL

Whiteside County, Illinois

ZIP code 61251 is located in Fenton, Illinois, within Whiteside County. It covers approximately 17.56 square miles and serves a population of 382 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 309.

About ZIP code 61251

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $171,100. Owner-occupancy is high at 90%, well above the national average.

Median household income is $73,125. The poverty rate of 7% is below the national average. 39% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is production, transportation, and material moving, with education and healthcare as the leading industry. The average commute of 28 minutes is near the national average.

College attainment at 5% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 61251 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

382

population

17.56

sq mi land

Standard

ZIP type

Central (CT)

timezone

61251 ZIP code map

Cities in ZIP code 61251

Below are the cities the US Postal Service accepts for ZIP code 61251. Using any city not on this list may result in mail delivery delays.

City	Status
Fenton	Preferred

Nearby ZIP codes

61250 Erie (4.8 mi) 61261 Lyndon (7.4 mi) 61230 Albany (7.5 mi) 61252 Fulton (8.4 mi) 61270 Morrison (8.6 mi) 61277 Prophetstown (10.2 mi) 52771 Teeds Grove (10.2 mi) 52736 Clinton (10.2 mi) 52734 Clinton (10.4 mi) 61242 Cordova (11.3 mi) 61257 Hillsdale (13 mi) 52730 Camanche (14.2 mi)

Demographics updated 05/2026

Population
Total population	382
Population density	22 / sq mi
State FIPS	17
County FIPS	195

Geography
Land area	17.56 sq mi
Water area	0.00 sq mi
Latitude	41.7290
Longitude	-90.0644
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	22.4%	43.7%	37.2%
$50k – $100k	44.2%	32.3%	29.6%
$100k – $200k	20.5%	20.7%	24.4%
Over $200k	12.8%	3.3%	8.8%

Demographics & statistics

382

Population

People per sq mi

36.3

Median age

$73,125

Median household income

$30,424

Per capita income

$171,100

Median home value

Median monthly rent

89.8%

Home ownership

7.3%

Poverty rate

6.9%

Unemployment

150

Housing units

4.9%

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	106	27.7%
18 and over	276	72.3%
65 and over	79	20.7%
Median age	36.3 years

Race & ethnicity

White 89.2%

Two or more races 7.1%

Hispanic or Latino 3.8%

Group	Count	%
White	354	89.2%
Two or more races	28	7.1%
Hispanic or Latino	15	3.8%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	22.4%	43.7%	37.2%
$50k – $100k	44.2%	32.3%	29.6%
$100k – $200k	20.5%	20.7%	24.4%
Over $200k	12.8%	3.3%	8.8%

Under $10k 13.8%

$10k–$15k 3.0%

$15k–$25k 4.2%

$25k–$35k 12.6%

$50k–$75k 22.8%

$75k–$100k 9.0%

$100k–$150k 30.5%

$150k–$200k 4.2%

Range	% of households
Under $10k	13.8%
$10k–$15k	3.0%
$15k–$25k	4.2%
$25k–$35k	12.6%
$50k–$75k	22.8%
$75k–$100k	9.0%
$100k–$150k	30.5%
$150k–$200k	4.2%
Median income	$73,125

Housing

Home values

Under $50k 10.0%

$50k–$100k 15.3%

$100k–$150k 6.7%

$150k–$200k 26.0%

$200k–$300k 32.0%

$300k–$500k 10.0%

Housing overview

Metric	Value
Median home value	$171,100
Median rent / month	$0
Owner occupied	89.8%
Renter occupied	10.2%
Vacant	0.0%
Single-family detached	100.0%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	6.5
Avg household size (owned)	2.31

Year built

Era	%
2020 or later	0.0%
2010–2019	12.6%
2000–2009	28.7%
1990–1999	5.4%
1980–1989	4.2%
1970–1979	0.0%
1960–1969	0.0%
1950–1959	12.0%
1940–1949	9.0%
1939 or earlier	28.1%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	12.0%
2 bedrooms	9.0%
3 bedrooms	63.5%
4 bedrooms	15.6%
5+ bedrooms	0.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	5.4%
2 vehicles	62.3%
3 or more	32.3%

Heating fuel

Fuel type	%
Utility gas	34.7%
Electricity	12.0%
Propane / LP gas	53.3%

Households & families

Household type	Count	%
Married-couple family	73	43.7%
Cohabiting couple	7	4.2%
Male householder, no spouse	60	35.9%
Female householder, no spouse	27	16.2%
Households with children under 18	46	27.5%
Households with seniors (65+)	50	29.9%
Average household size	2.29

Marital status

Status	Male	Female
Never married	25.6%	30.0%
Married	46.3%	46.7%
Separated	0.0%	0.0%
Widowed	5.0%	0.0%
Divorced	23.1%	23.3%

Education

Less than 9th grade 2.0%

Some HS, no diploma 0.0%

HS graduate 65.9%

Some college, no degree 13.0%

Associate's degree 14.2%

Bachelor's degree 4.9%

Graduate / professional 0.0%

Metric	%
HS diploma or higher	98.0%
Bachelor's or higher	4.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	14	14.0%
High school	65	65.0%
College / grad school	21	21.0%

Employment

Industry of employment

Education & healthcare 21.9%

Retail trade 13.4%

Manufacturing 12.9%

Agriculture & mining 10.4%

Transportation & utilities 10.4%

Public administration 8.5%

Arts, food & hospitality 7.0%

Finance & real estate 6.0%

Wholesale trade 5.0%

Professional & management 4.5%

Occupation

Category	%
Management, business & arts	19.9%
Service	20.4%
Sales & office	21.4%
Natural resources & construction	3.5%
Production & transportation	34.8%

Employment type

Type	%
Private sector	75.6%
Government	13.9%
Self-employed	10.4%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	94.0%
Carpool	0.0%
Public transit	0.0%
Walk	0.0%
Work from home	0.0%
Other means	6.0%
Avg commute (minutes)	28.3

Poverty

All people 7.3%

Under 18 years 0.0%

18 and over 10.1%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	38.9%
Retirement income	31.7%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	36.9%
High blood pressure	35.8%
High cholesterol	35.6%
Diabetes	10.7%
Heart disease	7.6%
Stroke	3.3%
Asthma	9.4%
Arthritis	30.3%
Kidney disease	3.0%
Pulmonary disease	7.7%
Cancer	7.8%

Behavior / access	%
Smoking	18.2%
Binge drinking	14.9%
No physical activity	23.6%
Less than 7 hrs sleep	32.4%
Depression	17.1%
Fair or poor health	14.0%
Poor mental health	12.2%
Poor physical health	10.3%
No health insurance	9.3%
Visited doctor (checkup)	78.1%
Visited dentist	64.7%
Cholesterol screening	91.6%
Teeth loss	13.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	27	9.8%

Disability	%
Any disability	6.5%
Under 18	0.0%
18–64 years	0.0%
65 and over	31.6%

Health insurance coverage

Type	%
Private insurance	90.8%
Public insurance	28.8%
No insurance	2.4%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	344	90.1%
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)	382	100.0%
Born in same state	382	100.0%
Born in different state	211	55.2%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
French	40	10.5%
Italian	22	5.8%
Arab	21	5.5%

Ancestry	Count	%
English	12	3.1%
Polish	7	1.8%
Dutch	5	1.3%

Technology access

Metric	% of households
Computer access	43.7%
Internet access	77.2%

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

Frequently asked questions about ZIP code 61251

What city is ZIP code 61251 in?

ZIP code 61251 is primarily assigned to Fenton, Illinois.

What county is ZIP code 61251 in?

ZIP code 61251 falls within Whiteside County, Illinois.

How educated is the population of ZIP code 61251?

5% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Is ZIP code 61251 mostly owner-occupied?

90% of occupied units in ZIP code 61251 are owner-occupied, well above the national average.

Does ZIP code 61251 have a large retiree population?

39% of households in ZIP code 61251 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 61251 have a large veteran population?

10% of civilians in ZIP code 61251 are veterans, above the national average of ~7%.

What timezone is ZIP code 61251 in?

ZIP code 61251 observes the CST timezone.