61356 ZIP Code — Princeton, IL

Bureau County, Illinois

ZIP code 61356 is located in Princeton, Illinois, within Bureau County. It covers approximately 189.63 square miles and serves a population of 10,959 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 815.

About ZIP code 61356

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 $149,600. Owner-occupancy is high at 75%, well above the national average.

Median household income is $63,405. 42% 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 17 minutes is near the national average.

Educational attainment is near the national average, with 29% of residents holding a bachelor's degree or higher.

Overall, ZIP code 61356 reflects a community defined by high homeownership and a significant Social Security-dependent population.

10,959

population

189.63

sq mi land

Standard

ZIP type

Central (CT)

timezone

61356 ZIP code map

Cities in ZIP code 61356

Below are the cities the US Postal Service accepts for ZIP code 61356. Using any city not on this list may result in mail delivery delays.

City	Status
Princeton	Acceptable
Princeton	Preferred

Nearby ZIP codes

61368 Tiskilwa (6.6 mi) 61337 Malden (8.3 mi) 61379 Wyanet (8.5 mi) 61362 Spring Valley (10.5 mi) 61320 Dalzell (10.6 mi) 61312 Arlington (11 mi) 61327 Hennepin (11.1 mi) 61560 Putnam (11.3 mi) 61329 Ladd (11.4 mi) 61326 Granville (12.1 mi) 61349 Ohio (13.8 mi) 61314 Buda (14 mi)

Demographics updated 05/2026

Population
Total population	10,959
Population density	58 / sq mi
State FIPS	17
County FIPS	011

Geography
Land area	189.63 sq mi
Water area	2.08 sq mi
Latitude	41.3538
Longitude	-89.4232
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	44.4%	44.7%	37.2%
$50k – $100k	31.5%	32.7%	29.6%
$100k – $200k	19.4%	19.3%	24.4%
Over $200k	4.6%	3.3%	8.8%

Demographics & statistics

10,959

Population

People per sq mi

46.2

Median age

$63,405

Median household income

$37,571

Per capita income

$149,600

Median home value

$731

Median monthly rent

75.1%

Home ownership

13.2%

Poverty rate

5.5%

Unemployment

4,120

Housing units

28.9%

Bachelor's or higher

Age distribution

Male Female

249

Under 5

280

221

5–9

249

362

10–14

406

266

15–19

298

256

20–24

288

691

25–34

777

468

35–44

525

591

45–54

664

353

55–59

396

328

60–64

369

730

65–74

820

423

75–84

476

223

85+

250

← Male

Female →

Age summary

Group	Count	%
Under 18	2,138	19.5%
18 and over	8,821	80.5%
65 and over	2,922	26.7%
Median age	46.2 years

Race & ethnicity

White 88.9%

Hispanic or Latino 3.6%

Two or more races 3.3%

Other race 2.5%

Asian 1.7%

Black or African American 0.1%

Group	Count	%
White	10,102	88.9%
Hispanic or Latino	409	3.6%
Two or more races	377	3.3%
Other race	279	2.5%
Asian	193	1.7%
Black or African American	8	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	44.4%	44.7%	37.2%
$50k – $100k	31.5%	32.7%	29.6%
$100k – $200k	19.4%	19.3%	24.4%
Over $200k	4.6%	3.3%	8.8%

Under $10k 4.3%

$10k–$15k 5.7%

$15k–$25k 9.9%

$25k–$35k 5.6%

$35k–$50k 13.6%

$50k–$75k 17.8%

$75k–$100k 10.5%

$100k–$150k 19.9%

$150k–$200k 5.7%

$200k+ 6.9%

Range	% of households
Under $10k	4.3%
$10k–$15k	5.7%
$15k–$25k	9.9%
$25k–$35k	5.6%
$35k–$50k	13.6%
$50k–$75k	17.8%
$75k–$100k	10.5%
$100k–$150k	19.9%
$150k–$200k	5.7%
$200k+	6.9%
Median income	$63,405

Housing

Home values

Under $50k 6.8%

$50k–$100k 22.0%

$100k–$150k 21.4%

$150k–$200k 18.8%

$200k–$300k 21.9%

$300k–$500k 7.2%

$500k–$1M 1.9%

Housing overview

Metric	Value
Median home value	$149,600
Median rent / month	$731
Owner occupied	75.1%
Renter occupied	24.9%
Vacant	10.8%
Single-family detached	76.9%
Large apartment buildings	2.5%
Mobile homes	3.9%
Median rooms	6.2
Avg household size (owned)	2.40

Year built

Era	%
2020 or later	0.0%
2010–2019	4.1%
2000–2009	8.5%
1990–1999	7.8%
1980–1989	5.3%
1970–1979	14.8%
1960–1969	16.1%
1950–1959	9.6%
1940–1949	7.6%
1939 or earlier	26.2%

Bedrooms

Size	% of units
No bedroom (studio)	1.8%
1 bedroom	9.9%
2 bedrooms	24.2%
3 bedrooms	46.1%
4 bedrooms	13.2%
5+ bedrooms	4.7%

Vehicles per household

Vehicles	% of households
No vehicle	6.2%
1 vehicle	35.7%
2 vehicles	38.0%
3 or more	20.0%

Heating fuel

Fuel type	%
Utility gas	76.4%
Electricity	11.8%
Propane / LP gas	9.8%
Fuel oil	0.2%
Wood	0.8%
No fuel used	0.4%

Households & families

Household type	Count	%
Married-couple family	2,337	49.4%
Cohabiting couple	295	6.2%
Male householder, no spouse	766	16.2%
Female householder, no spouse	1,330	28.1%
Households with children under 18	1,180	25.0%
Households with seniors (65+)	1,986	42.0%
Average household size	2.27

Marital status

Status	Male	Female
Never married	27.0%	22.5%
Married	58.3%	48.1%
Separated	0.2%	1.3%
Widowed	4.5%	12.0%
Divorced	10.1%	16.2%

Education

Less than 9th grade 2.0%

Some HS, no diploma 5.9%

HS graduate 32.0%

Some college, no degree 20.9%

Associate's degree 10.3%

Bachelor's degree 18.5%

Graduate / professional 10.4%

Metric	%
HS diploma or higher	92.1%
Bachelor's or higher	28.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	118	5.4%
Kindergarten	138	6.4%
Elementary school	1,026	47.3%
High school	449	20.7%
College / grad school	438	20.2%

Employment

Industry of employment

Education & healthcare 24.5%

Retail trade 13.7%

Manufacturing 12.3%

Agriculture & mining 8.0%

Transportation & utilities 7.3%

Arts, food & hospitality 6.9%

Construction 6.3%

Other services 4.8%

Public administration 4.7%

Professional & management 4.5%

Wholesale trade 3.2%

Finance & real estate 2.2%

Information 1.5%

Occupation

Category	%
Management, business & arts	31.2%
Service	17.5%
Sales & office	19.6%
Natural resources & construction	10.9%
Production & transportation	20.8%

Employment type

Type	%
Private sector	79.4%
Government	14.4%
Self-employed	6.2%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	78.1%
Carpool	10.3%
Public transit	0.8%
Walk	2.2%
Work from home	6.4%
Other means	2.1%
Avg commute (minutes)	17.4

Poverty

All people 13.2%

Under 18 years 17.3%

18 and over 12.2%

Married-couple families 3.5%

Female-led households 44.0%

Income support

Source	% of households
Social Security	41.9%
Retirement income	35.3%
Supplemental Security	4.8%
Cash public assistance	1.3%
Food stamps / SNAP	10.7%

Health indicators

Condition	%
Obesity	33.7%
High blood pressure	36.0%
High cholesterol	36.3%
Diabetes	11.0%
Heart disease	7.8%
Stroke	3.6%
Asthma	9.6%
Arthritis	30.2%
Kidney disease	3.3%
Pulmonary disease	8.0%
Cancer	8.3%

Behavior / access	%
Smoking	17.4%
Binge drinking	13.9%
No physical activity	25.3%
Less than 7 hrs sleep	30.4%
Depression	17.1%
Fair or poor health	15.0%
Poor mental health	12.2%
Poor physical health	10.6%
No health insurance	10.3%
Visited doctor (checkup)	78.5%
Visited dentist	64.4%
Cholesterol screening	90.9%
Teeth loss	14.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	710	8.0%

Disability	%
Any disability	16.1%
Under 18	4.6%
18–64 years	13.9%
65 and over	29.6%

Health insurance coverage

Type	%
Private insurance	70.6%
Public insurance	41.6%
No insurance	5.7%
Uninsured under 19	3.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	10,430	95.2%
Spanish	192	1.8%
Other Indo-European	87	0.8%
Asian & Pacific Islander	50	0.5%
Other languages	30	0.3%

Place of birth & citizenship

Origin	Count	%
Native born (US)	10,571	96.5%
Born in same state	10,490	95.7%
Born in different state	8,394	76.6%
Foreign born	81	0.7%
Naturalized citizen	388	3.5%
Not a US citizen	163	42.0%

Ancestry

Ancestry	Count	%
French	1,624	14.8%
Italian	1,461	13.3%
Arab	827	7.5%
English	216	2%
Polish	155	1.4%

Ancestry	Count	%
Dutch	88	0.8%
Norwegian	75	0.7%
German	53	0.5%
Irish	18	0.2%

Technology access

Metric	% of households
Computer access	43.1%
Internet access	90.8%

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

Frequently asked questions about ZIP code 61356

What city is ZIP code 61356 in?

ZIP code 61356 is primarily assigned to Princeton, Illinois.

What county is ZIP code 61356 in?

ZIP code 61356 falls within Bureau County, Illinois.

Does ZIP code 61356 have an older population?

27% of residents in ZIP code 61356 are 65 or older, above the national average of ~17%.

Does ZIP code 61356 have a large retiree population?

42% of households in ZIP code 61356 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 61356?

The median home value in ZIP code 61356 is $149,600.

What is the population of ZIP code 61356?

ZIP code 61356 has an estimated population of 10,959 residents, with a density of 58 people per square mile.

What timezone is ZIP code 61356 in?

ZIP code 61356 observes the CST timezone.