61070 ZIP Code — Rock City, IL

Stephenson County, Illinois

ZIP code 61070 is located in Rock City, Illinois, within Stephenson County. It covers approximately 32.37 square miles and serves a population of 1,389 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 815.

About ZIP code 61070

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 $177,400. Owner-occupancy is high at 94%, well above the national average.

The gap between median ($86,429) and mean household income suggests income inequality — a small number of higher earners pull the average up. 42% of households receive Social Security income, suggesting a notable retiree or disability population.

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 28% of residents holding a bachelor's degree or higher.

Overall, ZIP code 61070 reflects a community defined by high homeownership and a significant Social Security-dependent population.

1,389
population
32.37
sq mi land
Standard
ZIP type
Central (CT)
timezone
61070 ZIP code map
Cities in ZIP code 61070

Below are the cities the US Postal Service accepts for ZIP code 61070. Using any city not on this list may result in mail delivery delays.

City Status
Rock City Acceptable
Rock City Preferred
Nearby ZIP codes
61019 Davis (2.8 mi) 61018 Dakota (3.9 mi) 61060 Orangeville (7.8 mi) 61067 Ridott (8 mi) 61024 Durand (9.9 mi) 61063 Pecatonica (10 mi) 61032 Freeport (10.1 mi) 53550 Juda (10.1 mi) 61088 Winnebago (12.9 mi) 61050 Mc Connell (13.1 mi) 53520 Brodhead (14.3 mi) 61039 German Valley (14.8 mi)
Demographics updated 05/2026
Population
Total population 1,389
Population density 43 / sq mi
State FIPS 17
County FIPS 177
Geography
Land area 32.37 sq mi
Water area 0.00 sq mi
Latitude 42.4186
Longitude -89.4816
Timezone Central (CT)
Area code 815
Total population by age
Gender
Race & ethnicity
Economics updated 05/2026
Household income
Income range This ZIP County avg State avg
Under $50k 43.8% 48.9% 37.2%
$50k – $100k 34.9% 31.3% 29.6%
$100k – $200k 9.9% 17.0% 24.4%
Over $200k 11.3% 2.7% 8.8%

Demographics & statistics

1,389
Population
43
People per sq mi
52.7
Median age
$86,429
Median household income
$51,346
Per capita income
$177,400
Median home value
$1,156
Median monthly rent
94.0%
Home ownership
7.5%
Poverty rate
3.1%
Unemployment
586
Housing units
28.3%
Bachelor's or higher

Age distribution

Male Female
16
Under 5
17
39
5–9
45
46
10–14
51
29
15–19
33
26
20–24
30
52
25–34
59
51
35–44
57
80
45–54
90
42
55–59
47
81
60–64
91
118
65–74
134
29
75–84
32
44
85+
50
← Male
Female →

Age summary

GroupCount%
Under 1826018.7%
18 and over1,12981.3%
65 and over40729.3%
Median age52.7 years

Race & ethnicity

White 92.2%
Hispanic or Latino 3.2%
Other race 2.5%
Two or more races 1.7%
Asian 0.3%
GroupCount%
White1,32392.2%
Hispanic or Latino463.2%
Other race362.5%
Two or more races251.7%
Asian50.3%

Household income

Income range This ZIP County avg State avg
Under $50k 43.8% 48.9% 37.2%
$50k – $100k 34.9% 31.3% 29.6%
$100k – $200k 9.9% 17.0% 24.4%
Over $200k 11.3% 2.7% 8.8%
Under $10k 0.4%
$10k–$15k 4.2%
$15k–$25k 3.4%
$25k–$35k 1.3%
$35k–$50k 14.7%
$50k–$75k 13.6%
$75k–$100k 24.7%
$100k–$150k 18.9%
$150k–$200k 3.8%
$200k+ 15.1%
Range% of households
Under $10k0.4%
$10k–$15k4.2%
$15k–$25k3.4%
$25k–$35k1.3%
$35k–$50k14.7%
$50k–$75k13.6%
$75k–$100k24.7%
$100k–$150k18.9%
$150k–$200k3.8%
$200k+15.1%
Median income$86,429

Housing

Home values

Under $50k 3.6%
$50k–$100k 11.6%
$100k–$150k 29.1%
$150k–$200k 11.2%
$200k–$300k 23.7%
$300k–$500k 19.1%
$500k–$1M 1.6%

Housing overview

MetricValue
Median home value$177,400
Median rent / month$1,156
Owner occupied94.0%
Renter occupied6.0%
Vacant14.2%
Single-family detached93.9%
Large apartment buildings1.8%
Mobile homes0.6%
Median rooms6.8
Avg household size (owned)2.64

Year built

Era%
2020 or later0.0%
2010–20191.1%
2000–20093.4%
1990–19996.8%
1980–19897.9%
1970–197918.4%
1960–19694.4%
1950–195911.0%
1940–19491.3%
1939 or earlier45.6%

Bedrooms

Size% of units
No bedroom (studio)1.9%
1 bedroom3.2%
2 bedrooms17.8%
3 bedrooms53.4%
4 bedrooms10.4%
5+ bedrooms13.3%

Vehicles per household

Vehicles% of households
No vehicle1.3%
1 vehicle27.4%
2 vehicles25.8%
3 or more45.5%

Heating fuel

Fuel type%
Utility gas37.2%
Electricity15.1%
Propane / LP gas44.9%
Wood1.3%
Solar0.4%

Households & families

Household typeCount%
Married-couple family30657.7%
Cohabiting couple101.9%
Male householder, no spouse6612.5%
Female householder, no spouse14827.9%
Households with children under 1815128.5%
Households with seniors (65+)24947.0%
Average household size2.62

Marital status

StatusMaleFemale
Never married24.7%10.7%
Married64.2%50.5%
Separated0.2%0.3%
Widowed0.6%23.6%
Divorced10.4%14.9%

Education

Less than 9th grade 0.2%
Some HS, no diploma 3.0%
HS graduate 22.8%
Some college, no degree 29.1%
Associate's degree 16.6%
Bachelor's degree 18.5%
Graduate / professional 9.7%
Metric%
HS diploma or higher96.8%
Bachelor's or higher28.3%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool216.3%
Kindergarten10.3%
Elementary school17151.2%
High school3410.2%
College / grad school10732.0%

Employment

Industry of employment

Education & healthcare 18.4%
Manufacturing 16.4%
Construction 15.6%
Transportation & utilities 13.2%
Other services 11.4%
Retail trade 9.6%
Finance & real estate 5.1%
Agriculture & mining 4.0%
Wholesale trade 1.6%
Information 1.6%
Professional & management 1.5%
Public administration 1.0%
Arts, food & hospitality 0.7%

Occupation

Category%
Management, business & arts28.8%
Service6.0%
Sales & office24.8%
Natural resources & construction22.6%
Production & transportation17.8%

Employment type

Type%
Private sector81.8%
Government4.5%
Self-employed13.7%
Unpaid family workers0.0%

Commute

Method%
Drive alone79.6%
Carpool3.6%
Public transit0.0%
Walk1.2%
Work from home15.5%
Other means0.0%
Avg commute (minutes)36.7

Poverty

All people 7.5%
Under 18 years 15.8%
18 and over 5.6%
Married-couple families 6.2%
Female-led households 5.7%

Income support

Source% of households
Social Security41.7%
Retirement income30.2%
Supplemental Security1.3%
Cash public assistance0.2%
Food stamps / SNAP6.2%

Health indicators

Condition%
Obesity34.1%
High blood pressure32.4%
High cholesterol34.2%
Diabetes9.5%
Heart disease6.3%
Stroke2.8%
Asthma9.4%
Arthritis26.6%
Kidney disease2.7%
Pulmonary disease6.8%
Cancer7.1%
Behavior / access%
Smoking17.4%
Binge drinking16.0%
No physical activity22.5%
Less than 7 hrs sleep31.4%
Depression17.6%
Fair or poor health12.7%
Poor mental health12.3%
Poor physical health9.4%
No health insurance9.2%
Visited doctor (checkup)76.7%
Visited dentist68.4%
Cholesterol screening90.8%
Teeth loss12.3%

Veterans & disability

VeteransCount%
Civilian veterans161.4%
Disability%
Any disability14.2%
Under 185.4%
18–64 years2.5%
65 and over40.5%

Health insurance coverage

Type%
Private insurance74.2%
Public insurance39.5%
No insurance2.9%
Uninsured under 191.1%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only1,35697.6%
Spanish70.5%
Other Indo-European70.5%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)1,38499.6%
Born in same state1,38499.6%
Born in different state89864.7%
Foreign born00.0%
Naturalized citizen50.4%
Not a US citizen00.0%

Ancestry

AncestryCount%
French16411.8%
Italian15010.8%
Polish977%
AncestryCount%
Arab705%
English221.6%
Norwegian70.5%

Technology access

Metric% of households
Computer access38.2%
Internet access93.8%

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

Frequently asked questions about ZIP code 61070

What city is ZIP code 61070 in?

ZIP code 61070 is primarily assigned to Rock City, Illinois.

What county is ZIP code 61070 in?

ZIP code 61070 falls within Stephenson County, Illinois.

Is ZIP code 61070 mostly owner-occupied?

94% of occupied units in ZIP code 61070 are owner-occupied, well above the national average.

Does ZIP code 61070 have an older population?

29% of residents in ZIP code 61070 are 65 or older, above the national average of ~17%.

Does ZIP code 61070 have a large retiree population?

42% of households in ZIP code 61070 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 61070?

The median home value in ZIP code 61070 is $177,400.

What timezone is ZIP code 61070 in?

ZIP code 61070 observes the CST timezone.

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