61104 ZIP Code — Rockford, IL

Winnebago County, Illinois

ZIP code 61104 is located in Rockford, Illinois, within Winnebago County. It covers approximately 4.50 square miles and serves a population of 18,306 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 815/779.

About ZIP code 61104

The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $77,500. Renters make up the majority at 63%, typical of denser urban areas.

Median household income is $29,594. Poverty affects 39% of residents, above the national average. SNAP benefit usage at 44% 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 production, transportation, and material moving, with manufacturing as the leading industry. The average commute of 23 minutes is near the national average.

College attainment at 8% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of obesity (49%), smoking (29%) compared to national benchmarks.

Overall, ZIP code 61104 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, a significant Social Security-dependent population, and elevated reliance on food assistance.

18,306

population

4.50

sq mi land

Standard

ZIP type

Central (CT)

timezone

61104 ZIP code map

Cities in ZIP code 61104

Below are the cities the US Postal Service accepts for ZIP code 61104. Using any city not on this list may result in mail delivery delays.

City	Status
Rockford	Preferred

Nearby ZIP codes

61109 Rockford (4.2 mi) 61107 Rockford (4.3 mi) 61108 Rockford (4.3 mi) 61102 Rockford (5 mi) 61103 Rockford (5.7 mi) 61112 Rockford (5.7 mi) 61101 Rockford (6.1 mi) 61114 Rockford (6.2 mi) 61016 Cherry Valley (7.1 mi) 61115 Machesney Park (8.2 mi) 61020 Davis Junction (9.9 mi) 61088 Winnebago (10.5 mi)

Demographics updated 05/2026

Population
Total population	18,306
Population density	4,068 / sq mi
State FIPS	17
County FIPS	201

Geography
Land area	4.50 sq mi
Water area	0.08 sq mi
Latitude	42.2541
Longitude	-89.0830
Timezone	Central (CT)
Area code	815/779

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	73.3%	45.2%	37.2%
$50k – $100k	19.5%	31.4%	29.6%
$100k – $200k	6.7%	19.5%	24.4%
Over $200k	0.4%	4.0%	8.8%

Demographics & statistics

18,306

Population

4,068

People per sq mi

34.9

Median age

$29,594

Median household income

$19,591

Per capita income

$77,500

Median home value

$788

Median monthly rent

36.7%

Home ownership

39.3%

Poverty rate

15.0%

Unemployment

4,351

Housing units

8.3%

Bachelor's or higher

Age distribution

Male Female

711

Under 5

634

756

5–9

674

747

10–14

665

522

15–19

466

682

20–24

608

1,439

25–34

1,282

1,247

35–44

1,112

1,171

45–54

1,043

716

55–59

638

522

60–64

466

757

65–74

674

263

75–84

235

146

85+

130

← Male

Female →

Age summary

Group	Count	%
Under 18	4,851	26.5%
18 and over	13,455	73.5%
65 and over	2,205	12.0%
Median age	34.9 years

Race & ethnicity

White 45.2%

Black or African American 19.8%

Hispanic or Latino 13%

Two or more races 11.5%

Other race 6.1%

Asian 3.6%

American Indian / Alaska Native 0.5%

Native Hawaiian / Pacific Islander 0.2%

Group	Count	%
White	9,516	45.2%
Black or African American	4,162	19.8%
Hispanic or Latino	2,745	13%
Two or more races	2,416	11.5%
Other race	1,292	6.1%
Asian	762	3.6%
American Indian / Alaska Native	114	0.5%
Native Hawaiian / Pacific Islander	44	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	73.3%	45.2%	37.2%
$50k – $100k	19.5%	31.4%	29.6%
$100k – $200k	6.7%	19.5%	24.4%
Over $200k	0.4%	4.0%	8.8%

Under $10k 14.2%

$10k–$15k 11.9%

$15k–$25k 18.1%

$25k–$35k 14.1%

$35k–$50k 11.9%

$50k–$75k 13.9%

$75k–$100k 7.1%

$100k–$150k 5.3%

$150k–$200k 3.3%

$200k+ 0.3%

Range	% of households
Under $10k	14.2%
$10k–$15k	11.9%
$15k–$25k	18.1%
$25k–$35k	14.1%
$35k–$50k	11.9%
$50k–$75k	13.9%
$75k–$100k	7.1%
$100k–$150k	5.3%
$150k–$200k	3.3%
$200k+	0.3%
Median income	$29,594

Housing

Home values

Under $50k 20.8%

$50k–$100k 52.6%

$100k–$150k 17.2%

$150k–$200k 7.5%

$200k–$300k 1.6%

$1M+ 0.3%

Housing overview

Metric	Value
Median home value	$77,500
Median rent / month	$788
Owner occupied	36.7%
Renter occupied	63.3%
Vacant	14.8%
Single-family detached	38.3%
Large apartment buildings	10.3%
Mobile homes	0.5%
Median rooms	4.9
Avg household size (owned)	2.41

Year built

Era	%
2020 or later	0.1%
2010–2019	0.8%
2000–2009	1.9%
1990–1999	1.5%
1980–1989	9.5%
1970–1979	3.1%
1960–1969	7.1%
1950–1959	10.9%
1940–1949	9.8%
1939 or earlier	55.3%

Bedrooms

Size	% of units
No bedroom (studio)	6.1%
1 bedroom	18.7%
2 bedrooms	41.2%
3 bedrooms	25.4%
4 bedrooms	6.0%
5+ bedrooms	2.6%

Vehicles per household

Vehicles	% of households
No vehicle	22.2%
1 vehicle	46.9%
2 vehicles	21.7%
3 or more	9.1%

Heating fuel

Fuel type	%
Utility gas	78.6%
Electricity	16.5%
Propane / LP gas	1.3%
No fuel used	2.9%

Households & families

Household type	Count	%
Married-couple family	1,919	23.8%
Cohabiting couple	529	6.6%
Male householder, no spouse	2,618	32.5%
Female householder, no spouse	2,983	37.1%
Households with children under 18	2,418	30.0%
Households with seniors (65+)	1,910	23.7%
Average household size	2.26

Marital status

Status	Male	Female
Never married	44.9%	43.0%
Married	31.9%	27.2%
Separated	2.9%	4.5%
Widowed	2.2%	7.1%
Divorced	18.1%	18.1%

Education

Less than 9th grade 7.4%

Some HS, no diploma 15.5%

HS graduate 38.8%

Some college, no degree 22.2%

Associate's degree 7.8%

Bachelor's degree 5.7%

Graduate / professional 2.6%

Metric	%
HS diploma or higher	77.1%
Bachelor's or higher	8.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	288	6.5%
Kindergarten	229	5.2%
Elementary school	2,580	58.7%
High school	763	17.3%
College / grad school	538	12.2%

Employment

Industry of employment

Manufacturing 18.1%

Education & healthcare 16.2%

Retail trade 15.2%

Professional & management 13.3%

Transportation & utilities 10.3%

Arts, food & hospitality 10.1%

Other services 4.8%

Construction 3.7%

Finance & real estate 3.1%

Public administration 2.4%

Wholesale trade 1.5%

Information 1.1%

Agriculture & mining 0.1%

Occupation

Category	%
Management, business & arts	15.4%
Service	26.9%
Sales & office	18.0%
Natural resources & construction	8.7%
Production & transportation	31.1%

Employment type

Type	%
Private sector	88.6%
Government	8.3%
Self-employed	2.9%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	72.1%
Carpool	13.5%
Public transit	2.2%
Walk	3.5%
Work from home	5.1%
Other means	3.6%
Avg commute (minutes)	22.7

Poverty

All people 39.3%

Under 18 years 56.4%

18 and over 33.3%

Married-couple families 19.0%

Female-led households 52.5%

Income support

Source	% of households
Social Security	34.3%
Retirement income	10.8%
Supplemental Security	10.1%
Cash public assistance	4.3%
Food stamps / SNAP	43.7%

Health indicators

Condition	%
Obesity	48.7%
High blood pressure	37.7%
High cholesterol	30.1%
Diabetes	14.1%
Heart disease	7.1%
Stroke	4.3%
Asthma	11.9%
Arthritis	26.4%
Kidney disease	3.7%
Pulmonary disease	10.1%
Cancer	4.7%

Behavior / access	%
Smoking	28.8%
Binge drinking	13.9%
No physical activity	38.3%
Less than 7 hrs sleep	37.6%
Depression	20.1%
Fair or poor health	26.1%
Poor mental health	16.9%
Poor physical health	15.0%
No health insurance	20.6%
Visited doctor (checkup)	76.0%
Visited dentist	44.7%
Cholesterol screening	83.4%
Teeth loss	28.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	673	5.0%

Disability	%
Any disability	21.4%
Under 18	5.9%
18–64 years	23.4%
65 and over	45.3%

Health insurance coverage

Type	%
Private insurance	31.5%
Public insurance	66.1%
No insurance	9.9%
Uninsured under 19	4.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	16,961	92.7%
Spanish	1,691	10.0%
Other Indo-European	1,133	6.7%
Asian & Pacific Islander	28	0.2%
Other languages	158	0.9%

Place of birth & citizenship

Origin	Count	%
Native born (US)	15,744	86.0%
Born in same state	15,628	85.4%
Born in different state	12,453	68.0%
Foreign born	116	0.6%
Naturalized citizen	2,562	14.0%
Not a US citizen	828	32.3%

Ancestry

Ancestry	Count	%
Italian	1,750	9.6%
Arab	673	3.7%
French	562	3.1%
Polish	232	1.3%

Ancestry	Count	%
English	104	0.6%
Dutch	29	0.2%
Norwegian	27	0.1%
German	16	0.1%

Technology access

Metric	% of households
Computer access	44.0%
Internet access	84.3%

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

Frequently asked questions about ZIP code 61104

What city is ZIP code 61104 in?

ZIP code 61104 is primarily assigned to Rockford, Illinois.

What county is ZIP code 61104 in?

ZIP code 61104 falls within Winnebago County, Illinois.

What is the poverty rate in ZIP code 61104?

39% of residents in ZIP code 61104 live below the poverty line, above the national average.

Is ZIP code 61104 mostly rentals?

63% of occupied units in ZIP code 61104 are renter-occupied.

How educated is the population of ZIP code 61104?

8% 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 typical home value in ZIP code 61104?

The median home value in ZIP code 61104 is $77,500.

What timezone is ZIP code 61104 in?

ZIP code 61104 observes the CST timezone.