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Illinois ZIP Codes
Lee County
West Brooklyn, IL
61378
61378 ZIP Code — West Brooklyn, IL
Lee County, Illinois
ZIP code 61378 is located in
West Brooklyn ,
Illinois ,
within Lee County .
It covers approximately 60.58 square miles and serves a population of
493 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 815 .
About ZIP code 61378
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 $162,500. Owner-occupancy sits near the national average at 60%.
Median household income is $100,139. The poverty rate of 2% is below the national average. SNAP benefit usage at 31% of households reflects economic stress in the area. 34% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with professional and management as the leading industry. An above-average commute of 36 minutes suggests many residents work outside the immediate area. Remote work is prevalent — 31% of workers work from home.
Educational attainment is near the national average, with 28% of residents holding a bachelor's degree or higher.
Overall, ZIP code 61378 reflects a community defined by a high rate of remote workers, a significant Social Security-dependent population, and elevated reliance on food assistance.
61378 ZIP code map
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Cities in ZIP code 61378
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Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
493
Population density
8 / sq mi
State FIPS
17
County FIPS
103
Geography
Land area
60.58 sq mi
Water area
0.12 sq mi
Latitude
41.7228
Longitude
-89.1635
Timezone
Central (CT)
Area code
815
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
32.8%
43.1%
37.2%
$50k – $100k
30.3%
33.4%
29.6%
$100k – $200k
27.9%
19.8%
24.4%
Over $200k
9.0%
3.8%
8.8%
Demographics & statistics
$100,139
Median household income
$162,500
Median home value
$1,075
Median monthly rent
28.4%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 178 36.1% 18 and over 315 63.9% 65 and over 58 11.8% Median age 27.0 years
Race & ethnicity
Group Count % White 487 98.4% Two or more races 4 0.8% Hispanic or Latino 2 0.4% Asian 2 0.4%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
32.8%
43.1%
37.2%
$50k – $100k
30.3%
33.4%
29.6%
$100k – $200k
27.9%
19.8%
24.4%
Over $200k
9.0%
3.8%
8.8%
Range % of households Under $10k 4.8% $15k–$25k 6.6% $25k–$35k 1.2% $35k–$50k 4.8% $50k–$75k 4.8% $75k–$100k 27.5% $100k–$150k 21.6% $150k–$200k 16.2% $200k+ 12.6% Median income $100,139
Housing
Housing overview
Metric Value Median home value $162,500 Median rent / month $1,075 Owner occupied 59.9% Renter occupied 40.1% Vacant 9.7% Single-family detached 98.9% Large apartment buildings 0.5% Mobile homes 0.0% Median rooms 6.8 Avg household size (owned) 2.07
Year built
Era % 2020 or later 0.0% 2010–2019 0.0% 2000–2009 0.0% 1990–1999 10.3% 1980–1989 3.2% 1970–1979 9.2% 1960–1969 3.2% 1950–1959 4.9% 1940–1949 2.2% 1939 or earlier 67.0%
Bedrooms
Size % of units No bedroom (studio) 0.0% 1 bedroom 1.1% 2 bedrooms 23.8% 3 bedrooms 41.6% 4 bedrooms 11.4% 5+ bedrooms 22.2%
Vehicles per household
Vehicles % of households No vehicle 4.8% 1 vehicle 22.2% 2 vehicles 61.1% 3 or more 12.0%
Heating fuel
Fuel type % Utility gas 29.3% Electricity 15.0% Propane / LP gas 54.5%
Households & families
Household type Count % Married-couple family 102 61.1% Cohabiting couple 12 7.2% Male householder, no spouse 13 7.8% Female householder, no spouse 40 24.0% Households with children under 18 70 41.9% Households with seniors (65+) 49 29.3% Average household size 2.95
Marital status
Status Male Female Never married 14.7% 30.7% Married 75.5% 50.0% Separated 0.0% 0.0% Widowed 2.8% 16.5% Divorced 7.0% 2.8%
Education
Some HS, no diploma
20.6%
Some college, no degree
12.6%
Graduate / professional
9.4%
Metric % HS diploma or higher 79.4% Bachelor's or higher 28.4%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 48 33.1% Kindergarten 0 0.0% Elementary school 87 60.0% High school 8 5.5% College / grad school 2 1.4%
Employment
Industry of employment
Professional & management
28.7%
Education & healthcare
25.5%
Transportation & utilities
6.9%
Public administration
2.7%
Arts, food & hospitality
2.1%
Finance & real estate
0.5%
Occupation
Category % Management, business & arts 33.0% Service 25.5% Sales & office 22.3% Natural resources & construction 2.1% Production & transportation 17.0%
Employment type
Type % Private sector 55.3% Government 23.9% Self-employed 20.7% Unpaid family workers 0.0%
Commute
Method % Drive alone 64.5% Carpool 4.3% Public transit 0.0% Walk 0.0% Work from home 31.2% Other means 0.0% Avg commute (minutes) 35.5
Poverty
Married-couple families
1.0%
Female-led households
0.0%
Income support
Source % of households Social Security 34.1% Retirement income 22.2% Supplemental Security 2.4% Cash public assistance 1.2% Food stamps / SNAP 30.5%
Health indicators
Condition % Obesity 36.4% High blood pressure 34.6% High cholesterol 34.1% Diabetes 10.8% Heart disease 7.0% Stroke 3.2% Asthma 9.5% Arthritis 27.7% Kidney disease 3.0% Pulmonary disease 7.9% Cancer 7.1%
Behavior / access % Smoking 19.5% Binge drinking 15.2% No physical activity 25.1% Less than 7 hrs sleep 32.4% Depression 17.6% Fair or poor health 14.7% Poor mental health 12.7% Poor physical health 10.5% No health insurance 10.5% Visited doctor (checkup) 76.8% Visited dentist 65.6% Cholesterol screening 90.7% Teeth loss 14.3%
Veterans & disability
Veterans Count % Civilian veterans 8 2.5%
Disability % Any disability 10.1% Under 18 0.0% 18–64 years 11.7% 65 and over 34.5%
Health insurance coverage
Type % Private insurance 44.0% Public insurance 64.9% No insurance 1.2% Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 408 82.8% 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) 479 97.2% Born in same state 479 97.2% Born in different state 439 89.0% Foreign born 0 0.0% Naturalized citizen 14 2.8% Not a US citizen 7 50.0%
Ancestry
Ancestry Count % Italian 151 30.6% French 81 16.4% English 12 2.4%
Ancestry Count % Irish 8 1.6% Arab 5 1% Dutch 1 0.2%
Technology access
Metric % of households Computer access 33.9% Internet access 89.8%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 61378
What city is ZIP code 61378 in?
ZIP code 61378 is primarily assigned to West Brooklyn, Illinois.
What county is ZIP code 61378 in?
ZIP code 61378 falls within Lee County, Illinois.
Is ZIP code 61378 family-oriented?
36% of residents in ZIP code 61378 are under 18, reflecting a younger, family-oriented community.
What is the typical home value in ZIP code 61378?
The median home value in ZIP code 61378 is $162,500.
What is the population of ZIP code 61378?
ZIP code 61378 has an estimated population of 493 residents, with a density of 8 people per square mile.
What is the median household income in ZIP code 61378?
The median household income in ZIP code 61378 is $100,139, above the national median of ~$75,000.
What timezone is ZIP code 61378 in?
ZIP code 61378 observes the CST timezone.
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