61259 ZIP Code — Illinois City, IL

Rock Island County, Illinois

ZIP code 61259 is located in Illinois City, Illinois, within Rock Island County. It covers approximately 76.83 square miles and serves a population of 1,379 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 309.

About ZIP code 61259

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 $210,800. Owner-occupancy is high at 91%, well above the national average.

Median household income is $91,080. The poverty rate of 5% is below the national average.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. An above-average commute of 37 minutes suggests many residents work outside the immediate area.

Educational attainment is near the national average, with 22% of residents holding a bachelor's degree or higher.

1,379

population

76.83

sq mi land

Standard

ZIP type

Central (CT)

timezone

61259 ZIP code map

Cities in ZIP code 61259

Below are the cities the US Postal Service accepts for ZIP code 61259. Using any city not on this list may result in mail delivery delays.

City	Status
Illinois City	Preferred

Nearby ZIP codes

52761 Muscatine (5.9 mi) 61284 Taylor Ridge (9.3 mi) 61279 Reynolds (10.9 mi) 52749 Fruitland (11 mi) 52726 Blue Grass (11.1 mi) 61260 Joy (11.2 mi) 61232 Andalusia (11.2 mi) 52747 Durant (14.1 mi) 52778 Wilton (14.9 mi) 52769 Stockton (15.4 mi) 52760 Moscow (15.5 mi) 52802 Davenport (16.8 mi)

Demographics updated 05/2026

Population
Total population	1,379
Population density	18 / sq mi
State FIPS	17
County FIPS	161

Geography
Land area	76.83 sq mi
Water area	8.44 sq mi
Latitude	41.3935
Longitude	-90.9258
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	31.4%	43.5%	37.2%
$50k – $100k	29.0%	33.1%	29.6%
$100k – $200k	35.8%	19.8%	24.4%
Over $200k	3.8%	3.5%	8.8%

Demographics & statistics

1,379

Population

People per sq mi

52.5

Median age

$91,080

Median household income

$40,908

Per capita income

$210,800

Median home value

Median monthly rent

90.9%

Home ownership

4.8%

Poverty rate

3.2%

Unemployment

595

Housing units

21.8%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

166

45–54

156

106

55–59

100

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	238	17.3%
18 and over	1,141	82.7%
65 and over	276	20.0%
Median age	52.5 years

Race & ethnicity

White 100%

Group	Count	%
White	1,379	100%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	31.4%	43.5%	37.2%
$50k – $100k	29.0%	33.1%	29.6%
$100k – $200k	35.8%	19.8%	24.4%
Over $200k	3.8%	3.5%	8.8%

Under $10k 3.6%

$15k–$25k 3.1%

$25k–$35k 4.1%

$35k–$50k 15.9%

$50k–$75k 15.2%

$75k–$100k 12.4%

$100k–$150k 25.9%

$150k–$200k 18.1%

$200k+ 1.7%

Range	% of households
Under $10k	3.6%
$15k–$25k	3.1%
$25k–$35k	4.1%
$35k–$50k	15.9%
$50k–$75k	15.2%
$75k–$100k	12.4%
$100k–$150k	25.9%
$150k–$200k	18.1%
$200k+	1.7%
Median income	$91,080

Housing

Home values

Under $50k 1.7%

$50k–$100k 6.1%

$100k–$150k 12.5%

$150k–$200k 26.4%

$200k–$300k 27.3%

$300k–$500k 16.9%

$500k–$1M 1.9%

$1M+ 7.2%

Housing overview

Metric	Value
Median home value	$210,800
Median rent / month	$0
Owner occupied	90.9%
Renter occupied	9.1%
Vacant	10.5%
Single-family detached	95.7%
Large apartment buildings	0.0%
Mobile homes	2.9%
Median rooms	6.6
Avg household size (owned)	2.43

Year built

Era	%
2020 or later	0.0%
2010–2019	4.9%
2000–2009	17.9%
1990–1999	6.0%
1980–1989	9.1%
1970–1979	8.8%
1960–1969	6.3%
1950–1959	2.8%
1940–1949	13.1%
1939 or earlier	31.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	1.7%
2 bedrooms	21.9%
3 bedrooms	59.3%
4 bedrooms	14.4%
5+ bedrooms	2.8%

Vehicles per household

Vehicles	% of households
No vehicle	1.2%
1 vehicle	15.0%
2 vehicles	34.7%
3 or more	49.1%

Heating fuel

Fuel type	%
Utility gas	20.9%
Electricity	3.8%
Propane / LP gas	72.9%
Wood	1.2%

Households & families

Household type	Count	%
Married-couple family	393	67.8%
Cohabiting couple	32	5.5%
Male householder, no spouse	107	18.4%
Female householder, no spouse	48	8.3%
Households with children under 18	161	27.8%
Households with seniors (65+)	193	33.3%
Average household size	2.38

Marital status

Status	Male	Female
Never married	27.1%	21.7%
Married	62.3%	68.2%
Separated	0.0%	1.5%
Widowed	4.9%	3.6%
Divorced	5.7%	5.0%

Education

Less than 9th grade 0.0%

Some HS, no diploma 7.3%

HS graduate 31.0%

Some college, no degree 30.8%

Associate's degree 9.2%

Bachelor's degree 15.9%

Graduate / professional 5.9%

Metric	%
HS diploma or higher	92.7%
Bachelor's or higher	21.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	21	9.5%
Kindergarten	0	0.0%
Elementary school	60	27.1%
High school	30	13.6%
College / grad school	110	49.8%

Employment

Industry of employment

Education & healthcare 22.3%

Manufacturing 14.5%

Retail trade 11.9%

Construction 11.3%

Transportation & utilities 8.7%

Finance & real estate 6.7%

Public administration 5.7%

Agriculture & mining 5.2%

Other services 5.2%

Professional & management 3.3%

Arts, food & hospitality 2.9%

Information 1.4%

Wholesale trade 0.9%

Occupation

Category	%
Management, business & arts	45.9%
Service	12.3%
Sales & office	12.6%
Natural resources & construction	12.0%
Production & transportation	17.1%

Employment type

Type	%
Private sector	70.6%
Government	22.8%
Self-employed	6.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	95.0%
Carpool	0.0%
Public transit	0.0%
Walk	1.7%
Work from home	1.1%
Other means	2.2%
Avg commute (minutes)	37.1

Poverty

All people 4.8%

Under 18 years 0.0%

18 and over 5.8%

Married-couple families 5.3%

Female-led households 0.0%

Income support

Source	% of households
Social Security	27.8%
Retirement income	30.3%
Supplemental Security	1.6%
Cash public assistance	0.0%
Food stamps / SNAP	1.6%

Health indicators

Condition	%
Obesity	33.1%
High blood pressure	31.7%
High cholesterol	34.1%
Diabetes	9.7%
Heart disease	6.3%
Stroke	2.7%
Asthma	9.1%
Arthritis	27.1%
Kidney disease	2.7%
Pulmonary disease	6.4%
Cancer	7.6%

Behavior / access	%
Smoking	15.9%
Binge drinking	15.4%
No physical activity	22.8%
Less than 7 hrs sleep	32.5%
Depression	17.7%
Fair or poor health	11.9%
Poor mental health	11.5%
Poor physical health	8.9%
No health insurance	8.5%
Visited doctor (checkup)	79.3%
Visited dentist	69.5%
Cholesterol screening	92.5%
Teeth loss	10.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	110	9.6%

Disability	%
Any disability	10.2%
Under 18	0.0%
18–64 years	8.6%
65 and over	24.3%

Health insurance coverage

Type	%
Private insurance	84.3%
Public insurance	28.3%
No insurance	3.8%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,284	93.1%
Spanish	18	1.4%
Other Indo-European	0	0.0%
Asian & Pacific Islander	18	1.4%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,345	97.5%
Born in same state	1,345	97.5%
Born in different state	624	45.3%
Foreign born	0	0.0%
Naturalized citizen	34	2.5%
Not a US citizen	34	100.0%

Ancestry

Ancestry	Count	%
Arab	228	16.5%
Italian	136	9.9%
French	86	6.2%

Ancestry	Count	%
English	23	1.7%
Polish	12	0.9%

Technology access

Metric	% of households
Computer access	42.1%
Internet access	92.9%

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

Frequently asked questions about ZIP code 61259

What city is ZIP code 61259 in?

ZIP code 61259 is primarily assigned to Illinois City, Illinois.

What county is ZIP code 61259 in?

ZIP code 61259 falls within Rock Island County, Illinois.

Is ZIP code 61259 mostly owner-occupied?

91% of occupied units in ZIP code 61259 are owner-occupied, well above the national average.

Does ZIP code 61259 have a large veteran population?

10% of civilians in ZIP code 61259 are veterans, above the national average of ~7%.

What is the population of ZIP code 61259?

ZIP code 61259 has an estimated population of 1,379 residents, with a density of 18 people per square mile.

What is the typical home value in ZIP code 61259?

The median home value in ZIP code 61259 is $210,800.

What timezone is ZIP code 61259 in?

ZIP code 61259 observes the CST timezone.