Princeton ZIP Codes — Bureau County, IL

There is one unique ZIP code in Princeton, Illinois and it is 61356. Area code: 815.

ZIP codes

189.63

sq mi land

2.08

sq mi water

815

area code

Princeton, IL ZIP code map

About Princeton, IL

Princeton, Illinois, is a charming city located in Bureau County, known for its rich history and vibrant community. With its welcoming atmosphere, Princeton offers a blend of small-town charm and modern amenities. The city is an attractive destination for both residents and visitors, featuring a variety of local shops, parks, and cultural events throughout the year.

Location & geography

Geographically, Princeton is positioned in north-central Illinois and has a land area of 189.63 square miles, complemented by a small water area of 2.08 square miles. The city is surrounded by several neighboring communities, with the closest cities being Mendota approximately 18 miles to the southwest, and Henry about 22 miles to the southeast. The terrain is primarily flat, typical of the Midwest, and the nearby water features add to the scenic beauty of the area.

Community & economy

The community in Princeton is characterized by its friendly residents and active local organizations that foster a strong sense of belonging. The city has a diverse economy, with key industries including agriculture, manufacturing, and retail, contributing to a stable local job market. Daily life in Princeton is enhanced by various events, festivals, and a supportive network of businesses that prioritize community engagement.

Transportation

Transportation in Princeton is facilitated by major highways, including Interstate 80 and U.S. Route 6, providing convenient access to larger cities and neighboring locales. The nearest airport for commercial flights is Illinois Valley Regional Airport in Peru, located approximately 14 miles south of Princeton, while local transit options are available for in-town travel.

History

Princeton was founded in 1831 and has a rich history tied to the development of agriculture and industry in the region. Over the years, the city has been a hub for various industries and was notably impacted by events such as the construction of railroads in the 19th century, which spurred economic growth. Historical sites and heritage events continue to reflect its storied past, making it a fascinating place to explore.

Did you know?

One surprising fact about Princeton is that it is home to the annual Bureau County Fair, which attracts visitors from across the region and showcases local agriculture and entertainment. The city also boasts a historic downtown area that features many well-preserved buildings, reflecting its historical significance.

ZIP codes for Princeton, IL (1)

ZIP code	City	County	Map
61356	Princeton	Bureau	View map

Demographics & statistics

10,959

Population

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

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%
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	%
High blood pressure	36.0%
High cholesterol	36.3%
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	%
Binge drinking	13.9%
No physical activity	25.3%
Less than 7 hrs sleep	30.4%
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%
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

What ZIP codes does Princeton, IL have?

Princeton, IL has one ZIP code: 61356. Each ZIP code serves a distinct delivery area within the city and surrounding region.