What city is ZIP code 61070?

ZIP code 61070 is in Rock City, IL (Stephenson County).

What county is ZIP code 61070 in?

ZIP code 61070 is mostly in Stephenson County, Illinois.

How many people live in ZIP code 61070?

About 1,322 people live in the 61070 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 61070

Rock City, IL, Stephenson County

Population

1,322

Land area

32.4sq mi

People per sq mi

City

Rock City

ZIP 61070 and nearby ZIP codes

Full map

ZIP 61070 at a glance

ZIP 61070 (Rock City) is 82% less dense than Illinois as a whole.
The median household income is $84,167, close to the Illinois median.
A typical owner-occupied home is valued at $157,000 (40% below Illinois) and median rent is $642 a month.

Local data for ZIP 61070

Counts from official public data

Housing and community stats

ZIP 61070, American Community Survey 2020-2024

Full profile

Median household income

$84,167

Poverty rate

3.3%

Median home value

$157,000

Prices +2.3% in a year

Median rent

$642/mo

Homeownership

90.4%

Bachelor's or higher

26.3%

Median age

52.0

Average commute

27.9 min

Income, education and commute

Economy and federal money

Businesses, pandemic loans and political donations

Details

Business establishments

ZIP Business Patterns 2023

Employees

$4.5M annual payroll

PPP loans

$1.6M

56 loans

Campaign donations

$12.2K

60% D, 1% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 61070, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: hail

Storm events since 1996

697

Countywide, mostly thunderstorm wind

Flood insurance policies

0.3% of homes, county

July high / Jan low

82° / 11°F

38.4 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 61070, CDC PLACES estimates

All 40 measures

Obesity

38.7%

U.S. 33.3% +5.4 pts

Diabetes

11.1%

U.S. 12.1% -1.0 pts

Smoking

13.7%

U.S. 12.8% +0.9 pts

Uninsured (18-64)

6.3%

U.S. 11.1% -4.8 pts

Frequently asked questions

What city is ZIP code 61070?: ZIP code 61070 is in Rock City, IL (Stephenson County).
What county is ZIP code 61070 in?: ZIP code 61070 is mostly in Stephenson County, Illinois.
How many people live in ZIP code 61070?: About 1,322 people live in the 61070 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.