ZIP Code · IL

ZIP 61104

Part of Rockford, IL

Pop. 17,222·Winnebago County·211th most expensive ZIP in Illinois

Median rent (all units)

$1,112/mo

Year-over-Year

+11.7%

Month-over-Month

+1.3%

vs US Median

-$820

Reported rents

Rising (Monthly)

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Most AffordableMost Expensive

ZIP 61104 · $1,112

More affordable than 95% of US ZIP codes · National median $1,932/mo

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Compare your rent to the local median.

Medians by bedroom

Rent by unit size

Studio

$730

1 BR

$810

2 BR

$1,070

3 BR

$1,410

4 BR+

$1,450

Research median

$1,070/mo

Bedroom estimates are gross rents that include essential utilities (electricity, water, gas, sewer, trash).

Rent trends

12-month history

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Last updated: October 17, 2026

From the history

What the numbers show

Past year vs. the rest of Illinois

Rent in ZIP 61104 changed +11.6% over the year to September 2026. Across the 172 Illinois ZIP codes Zillow tracks, the typical change was +4.7%.

Recent direction

Rent has risen 2 months in a row, and rose in 10 of the last 12 months.

What a typical income covers

30% of the median household income ($33,772) is $844 a month. That covers HUD's Fair Market Rent for up to a 1-bedroom ($810); a 2-bedroom is $1,070.

Rank in Rockford

1st cheapest of 5 ZIP codes in Rockford.

From Zillow's monthly rent index (ZORI) for ZIP 61104. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.

Annual cost

$13,344/yr

At $1,112/mo median

Location

CityRockford

StateIL

CountyWinnebago County

Rent Market Meter

Strong Landlord's Market

Renter's MarketBalancedLandlord's Market

Rents are up 11.7% year-over-year. Expect competition, and move quickly to lock in terms.

Based on rent-price momentum (+11.7% YoY, +1.3% MoM), not inventory.

Demographics

Who lives here

ZIP 61104 (Rockford, IL) is majority renter-occupied, has a large share of families with children, has a median income below the national average, 9.3% of residents hold a bachelor's degree or higher.

Population

17,222

Median income

$33,772

Median age

34.4

Renters

62.2%

Age distribution

26.4%

24.9%

24%

12.3%

12.5%

Under 1826.4%

18–3424.9%

35–5424%

55–6412.3%

65+12.5%

Gender

51%

49%

Male51%

Female49%

Race & ethnicity

45.1%

22.2%

26.5%

White45.1%

Black22.2%

Hispanic26.5%

Asian4.1%

Other2.1%

Education (25+)

23.2%

38.9%

28.6%

No HS diploma23.2%

HS diploma38.9%

Some college28.6%

Bachelor's+9.3%

Housing tenure

37.8%

62.2%

Owner37.8%

Renter62.2%

Source: U.S. Census Bureau · ACS 2024 5-Year Estimates

2021 vs 2026

How ZIP 61104 in Rockford, IL has changed in 5 years

Income

$31,011 → $33,772

up 8.9%

Population

19,106 → 17,222

down 9.9%

Renter share

61.9% → 62.2%

+0.3 pts

Bachelor's+

8.8% → 9.3%

+0.5 pts

Census figures show median household income at $33,772 today, compared with $31,011 five years earlier. Census counts show ZIP 61104 in Rockford, IL losing about 1,884 residents over the five-year window, down 9.9% on net.

Community

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Local insights

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About renting in ZIP 61104

Last updated: October 17, 2026

ZIP code 61104 covers Rockford, IL. The median rent here is $1,112/mo as of October 2026. A 1-bedroom rents for a median of $810/mo. A 2-bedroom rents for a median of $1,070/mo.

At 40% of local median household income ($33,772/yr), ZIP 61104 ranks as moderate compared to the national benchmark of 30%. Rents have increased 11.7% over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 61104?

To keep rent at or below 30% of gross income, you would need to earn at least $44,000/year (about $21/hour full-time) to afford the median rent of $1,112/mo in ZIP 61104. The local median household income is $33,772/yr, so the typical household falls short of that bar.

Is rent going up or down in ZIP 61104?

Rent in ZIP 61104 has risen 11.7% over the past year.

How does ZIP 61104 compare to other ZIPs in Illinois?

ZIP 61104 is one of the more affordable among Illinois ZIP codes for rent, ranking #211 of 227 at $1,112/mo. Over the year to September 2026, rent in ZIP 61104 changed +11.6%, against a typical +4.7% across the 172 Illinois ZIP codes Zillow tracks.