Hennepin ZIP Codes — Putnam County, IL

There is one unique ZIP code in Hennepin, Illinois and it is 61327. Area code: 815/779.

ZIP codes

36.29

sq mi land

2.11

sq mi water

815/779

area code

Hennepin, IL ZIP code map

About Hennepin, IL

Hennepin is a quaint village located in Putnam County, Illinois. It is known for its small-town charm and friendly community. With a rich history and a strong sense of local pride, Hennepin serves as a peaceful retreat away from the hustle and bustle of larger cities.

Location & geography

Hennepin is situated in north-central Illinois, providing a tranquil landscape that includes both land and water areas. The village covers a total land area of 36.29 square miles and has 2.11 square miles designated as water. Nearby cities include Princeton, which is approximately 20 miles to the northeast, Henry about 9 miles to the southeast, and Granville roughly 12 miles to the west.

Community & economy

The character of Hennepin reflects a close-knit community where residents often come together for local events and activities. The economy primarily relies on agriculture and small businesses, which contribute significantly to the daily life of its inhabitants. Daily routines often revolve around local services, schools, and family-oriented outings, creating an inviting atmosphere.

Transportation

Transportation in Hennepin is facilitated by several highways, including Illinois Route 26, which provides direct access to the surrounding regions. The nearest named airport is Bureau County Airport, located roughly 20 miles away, accommodating general aviation. Public transit options are limited, but residents typically rely on personal vehicles for commuting.

History

Hennepin was founded in the early 19th century, originating as a small trading post along the Illinois River, which played a crucial role in its development. Agriculture emerged as a key industry, shaping the community's livelihood and culture over the years. Key events in the village's history include the construction of local infrastructure and the establishment of annual community gatherings that celebrate its heritage.

Did you know?

One little-known fact about Hennepin is that it is home to a significant population of migratory birds due to its proximity to the Illinois River. Additionally, the village's tranquil surroundings make it a hidden gem for nature lovers and outdoor enthusiasts.

ZIP codes for Hennepin, IL (1)

ZIP code	City	County	Map
61327	Hennepin	Putnam	View map

Demographics & statistics

1,385

Population

44.2

Median age

$115,862

Median household income

$41,569

Per capita income

$211,000

Median home value

$821

Median monthly rent

87.9%

Home ownership

2.3%

Poverty rate

3.2%

Unemployment

511

Housing units

19.5%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

106

45–54

110

55–59

117

60–64

122

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	309	22.3%
18 and over	1,076	77.7%
65 and over	164	11.8%
Median age	44.2 years

Race & ethnicity

White 94%

Two or more races 1.7%

Hispanic or Latino 1.6%

Asian 1.1%

Other race 0.9%

Black or African American 0.6%

Group	Count	%
White	1,323	94%
Two or more races	24	1.7%
Hispanic or Latino	23	1.6%
Asian	16	1.1%
Other race	13	0.9%
Black or African American	9	0.6%

Household income

Under $10k 1.0%

$10k–$15k 0.6%

$15k–$25k 6.4%

$25k–$35k 7.6%

$35k–$50k 11.7%

$50k–$75k 11.5%

$75k–$100k 6.6%

$100k–$150k 32.9%

$150k–$200k 17.7%

$200k+ 4.1%

Range	% of households
Under $10k	1.0%
$10k–$15k	0.6%
$15k–$25k	6.4%
$25k–$35k	7.6%
$35k–$50k	11.7%
$50k–$75k	11.5%
$75k–$100k	6.6%
$100k–$150k	32.9%
$150k–$200k	17.7%
$200k+	4.1%
Median income	$115,862

Housing

Home values

Under $50k 2.2%

$50k–$100k 9.7%

$100k–$150k 14.6%

$150k–$200k 16.4%

$200k–$300k 47.3%

$300k–$500k 8.6%

$500k–$1M 1.1%

Housing overview

Metric	Value
Median home value	$211,000
Median rent / month	$821
Owner occupied	87.9%
Renter occupied	12.1%
Vacant	10.3%
Single-family detached	91.4%
Large apartment buildings	0.0%
Mobile homes	1.4%
Median rooms	6.3
Avg household size (owned)	2.73

Year built

Era	%
2020 or later	0.0%
2010–2019	1.4%
2000–2009	14.8%
1990–1999	6.8%
1980–1989	8.7%
1970–1979	33.3%
1960–1969	8.6%
1950–1959	7.0%
1940–1949	4.9%
1939 or earlier	14.5%

Bedrooms

Size	% of units
No bedroom (studio)	2.3%
1 bedroom	5.8%
2 bedrooms	21.8%
3 bedrooms	46.2%
4 bedrooms	12.4%
5+ bedrooms	11.5%

Vehicles per household

Vehicles	% of households
No vehicle	1.4%
1 vehicle	20.6%
2 vehicles	39.9%
3 or more	38.1%

Heating fuel

Fuel type	%
Utility gas	44.9%
Electricity	11.7%
Propane / LP gas	22.4%
Wood	19.3%
No fuel used	1.6%

Households & families

Household type	Count	%
Married-couple family	331	64.4%
Cohabiting couple	38	7.4%
Male householder, no spouse	70	13.6%
Female householder, no spouse	75	14.6%
Households with children under 18	199	38.7%
Households with seniors (65+)	139	27.0%
Average household size	2.68

Marital status

Status	Male	Female
Never married	28.3%	33.3%
Married	60.6%	54.8%
Separated	0.2%	0.2%
Widowed	2.6%	4.8%
Divorced	8.4%	7.0%

Education

Less than 9th grade 0.2%

Some HS, no diploma 2.5%

HS graduate 39.5%

Some college, no degree 20.3%

Associate's degree 18.0%

Bachelor's degree 10.9%

Graduate / professional 8.5%

Metric	%
HS diploma or higher	97.3%
Bachelor's or higher	19.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	10	2.7%
Kindergarten	20	5.5%
Elementary school	140	38.5%
High school	135	37.1%
College / grad school	59	16.2%

Employment

Industry of employment

Education & healthcare 27.0%

Transportation & utilities 20.9%

Manufacturing 13.6%

Retail trade 9.7%

Arts, food & hospitality 5.9%

Professional & management 5.6%

Construction 4.5%

Agriculture & mining 4.1%

Wholesale trade 2.5%

Public administration 2.4%

Information 1.9%

Finance & real estate 1.3%

Other services 0.7%

Occupation

Category	%
Management, business & arts	26.2%
Service	19.9%
Sales & office	18.2%
Natural resources & construction	14.5%
Production & transportation	21.1%

Employment type

Type	%
Private sector	80.2%
Government	17.7%
Self-employed	2.1%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	83.2%
Carpool	4.6%
Public transit	0.0%
Walk	1.2%
Other means	2.4%
Avg commute (minutes)	28.4

Poverty

All people 2.3%

Under 18 years 1.0%

18 and over 2.7%

Married-couple families 0.0%

Female-led households 14.3%

Income support

Source	% of households
Social Security	37.9%
Retirement income	35.4%
Supplemental Security	5.3%
Cash public assistance	0.6%
Food stamps / SNAP	2.7%

Health indicators

Condition	%
High blood pressure	34.0%
High cholesterol	36.0%
Heart disease	6.8%
Stroke	3.0%
Asthma	9.3%
Arthritis	28.1%
Kidney disease	2.9%
Pulmonary disease	7.0%
Cancer	7.7%

Behavior / access	%
Binge drinking	15.1%
No physical activity	23.2%
Less than 7 hrs sleep	31.6%
Fair or poor health	12.9%
Poor mental health	12.0%
Poor physical health	9.5%
No health insurance	9.4%
Visited doctor (checkup)	77.4%
Visited dentist	68.2%
Cholesterol screening	91.6%
Teeth loss	11.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	57	5.3%

Disability	%
Any disability	13.0%
Under 18	8.1%
18–64 years	12.6%
65 and over	24.4%

Health insurance coverage

Type	%
Private insurance	84.9%
Public insurance	25.7%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,355	97.8%
Spanish	5	0.4%
Other Indo-European	5	0.4%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,379	99.6%
Born in same state	1,379	99.6%
Born in different state	1,241	89.6%
Foreign born	0	0.0%
Naturalized citizen	6	0.4%
Not a US citizen	3	50.0%

Ancestry

Ancestry	Count	%
Italian	220	15.9%
French	168	12.1%
Arab	86	6.2%
Polish	51	3.7%

Ancestry	Count	%
English	32	2.3%
Dutch	13	0.9%
Norwegian	3	0.2%

Technology access

Metric	% of households
Computer access	37.1%
Internet access	94.0%

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

Frequently asked questions

What ZIP codes does Hennepin, IL have?

Hennepin, IL has one ZIP code: 61327. Each ZIP code serves a distinct delivery area within the city and surrounding region.