61435 ZIP Code — Gerlaw, IL

Warren County, Illinois

ZIP code 61435 is located in Gerlaw, Illinois, within Warren County. It covers approximately 17.45 square miles and serves a population of 155 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 309.

155

population

17.45

sq mi land

Standard

ZIP type

Central (CT)

timezone

61435 ZIP code map

Cities in ZIP code 61435

Below are the cities the US Postal Service accepts for ZIP code 61435. Using any city not on this list may result in mail delivery delays.

City	Status
Gerlaw	Acceptable

Demographics updated 05/2026

Population
Total population	155
Population density	9 / sq mi
State FIPS	17
County FIPS	187

Geography
Land area	17.45 sq mi
Water area	0.00 sq mi
Latitude	41.0070
Longitude	-90.5782
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	0.0%	44.2%	37.2%
$50k – $100k	100.0%	36.3%	29.6%
$100k – $200k	0.0%	16.3%	24.4%
Over $200k	0.0%	3.2%	8.8%

Demographics & statistics

155

Population

People per sq mi

25.9

Median age

Median household income

$27,868

Per capita income

Median home value

Median monthly rent

57.4%

Home ownership

26.2%

Poverty rate

0.0%

Unemployment

Housing units

10.4%

Bachelor's or higher

Age distribution

Male Female

10–14

25–34

45–54

55–59

← Male

Female →

Age summary

Group	Count	%
Under 18	49	31.6%
18 and over	106	68.4%
65 and over	0	0.0%
Median age	25.9 years

Race & ethnicity

White 100%

Group	Count	%
White	155	100%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	0.0%	44.2%	37.2%
$50k – $100k	100.0%	36.3%	29.6%
$100k – $200k	0.0%	16.3%	24.4%
Over $200k	0.0%	3.2%	8.8%

$35k–$50k 42.6%

$75k–$100k 37.0%

$150k–$200k 20.4%

Range	% of households
$35k–$50k	42.6%
$75k–$100k	37.0%
$150k–$200k	20.4%
Median income	$0

Housing

Home values

$50k–$100k 100.0%

Housing overview

Metric	Value
Median home value	$0
Median rent / month	$0
Owner occupied	57.4%
Renter occupied	42.6%
Vacant	15.6%
Single-family detached	84.4%
Large apartment buildings	0.0%
Mobile homes	15.6%
Median rooms	6.5
Avg household size (owned)	2.16

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	0.0%
1990–1999	0.0%
1980–1989	67.2%
1970–1979	15.6%
1960–1969	0.0%
1950–1959	0.0%
1940–1949	0.0%
1939 or earlier	17.2%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	51.6%
3 bedrooms	0.0%
4 bedrooms	17.2%
5+ bedrooms	31.3%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	42.6%
2 vehicles	20.4%
3 or more	37.0%

Heating fuel

Fuel type	%
Electricity	37.0%
Propane / LP gas	63.0%

Households & families

Household type	Count	%
Married-couple family	31	57.4%
Cohabiting couple	23	42.6%
Male householder, no spouse	0	0.0%
Female householder, no spouse	0	0.0%
Households with children under 18	43	79.6%
Households with seniors (65+)	0	0.0%
Average household size	2.87

Marital status

Status	Male	Female
Never married	0.0%	59.3%
Married	55.8%	40.7%
Separated	0.0%	0.0%
Widowed	0.0%	0.0%
Divorced	44.2%	0.0%

Education

Less than 9th grade 0.0%

Some HS, no diploma 0.0%

HS graduate 49.1%

Some college, no degree 21.7%

Associate's degree 18.9%

Bachelor's degree 0.0%

Graduate / professional 10.4%

Metric	%
HS diploma or higher	100.0%
Bachelor's or higher	10.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	33	67.3%
High school	16	32.7%
College / grad school	0	0.0%

Employment

Industry of employment

Retail trade 64.2%

Transportation & utilities 24.2%

Education & healthcare 11.6%

Occupation

Category	%
Management, business & arts	66.3%
Service	0.0%
Sales & office	0.0%
Natural resources & construction	9.5%
Production & transportation	24.2%

Employment type

Type	%
Private sector	88.4%
Government	11.6%
Self-employed	0.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	100.0%
Carpool	0.0%
Public transit	0.0%
Walk	0.0%
Work from home	0.0%
Other means	0.0%
Avg commute (minutes)	0.0

Poverty

All people 26.2%

Under 18 years 0.0%

18 and over 30.2%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	0.0%
Retirement income	20.4%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	42.6%

Health indicators

Condition	%
Obesity	33.6%
High blood pressure	40.6%
High cholesterol	39.4%
Diabetes	12.4%
Heart disease	9.0%
Stroke	4.0%
Asthma	9.4%
Arthritis	35.1%
Kidney disease	3.7%
Pulmonary disease	8.6%
Cancer	10.4%

Behavior / access	%
Smoking	14.4%
Binge drinking	12.0%
No physical activity	24.7%
Less than 7 hrs sleep	28.9%
Depression	16.5%
Fair or poor health	14.5%
Poor mental health	11.0%
Poor physical health	10.6%
No health insurance	8.2%
Visited doctor (checkup)	81.3%
Visited dentist	67.9%
Cholesterol screening	93.4%
Teeth loss	11.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	0	0.0%

Disability	%
Any disability	7.1%
Under 18	0.0%
18–64 years	10.4%
65 and over	0.0%

Health insurance coverage

Type	%
Private insurance	63.9%
Public insurance	36.1%
No insurance	0.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	155	100.0%
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)	155	100.0%
Born in same state	155	100.0%
Born in different state	128	82.6%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	23	14.8%
Polish	11	7.1%

Ancestry	Count	%
Dutch	9	5.8%

Technology access

Metric	% of households
Computer access	34.8%
Internet access	100.0%

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

Frequently asked questions about ZIP code 61435

What city is ZIP code 61435 in?

ZIP code 61435 is primarily assigned to Gerlaw, Illinois.

What county is ZIP code 61435 in?

ZIP code 61435 falls within Warren County, Illinois.

Is ZIP code 61435 family-oriented?

32% of residents in ZIP code 61435 are under 18, reflecting a younger, family-oriented community.

What is the poverty rate in ZIP code 61435?

26% of residents in ZIP code 61435 live below the poverty line, above the national average.

How educated is the population of ZIP code 61435?

10% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What is the population of ZIP code 61435?

ZIP code 61435 has an estimated population of 155 residents, with a density of 9 people per square mile.

What timezone is ZIP code 61435 in?

ZIP code 61435 observes the CST timezone.