61084 ZIP Code — Stillman Valley, IL

Ogle County, Illinois

ZIP code 61084 is located in Stillman Valley, Illinois, within Ogle County. It covers approximately 34.78 square miles and serves a population of 3,118 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 815.

About ZIP code 61084

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $199,300. Owner-occupancy is high at 86%, well above the national average.

Median household income is $90,605. 36% 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. The average commute of 27 minutes is near the national average.

Educational attainment is near the national average, with 38% of residents holding a bachelor's degree or higher.

Overall, ZIP code 61084 reflects a community defined by high homeownership and a significant Social Security-dependent population.

3,118

population

34.78

sq mi land

Standard

ZIP type

Central (CT)

timezone

61084 ZIP code map

Cities in ZIP code 61084

Below are the cities the US Postal Service accepts for ZIP code 61084. Using any city not on this list may result in mail delivery delays.

City	Status
Stillman Valley	Acceptable
Stillman Valley	Preferred

Nearby ZIP codes

61010 Byron (3.9 mi) 61020 Davis Junction (5.1 mi) 61102 Rockford (6.8 mi) 61109 Rockford (8.1 mi) 61015 Chana (8.6 mi) 61052 Monroe Center (9.5 mi) 61104 Rockford (10.6 mi) 61049 Lindenwood (11.2 mi) 61047 Leaf River (11.4 mi) 61061 Oregon (12.1 mi) 61016 Cherry Valley (12.8 mi) 61068 Rochelle (13 mi)

Demographics updated 05/2026

Population
Total population	3,118
Population density	90 / sq mi
State FIPS	17
County FIPS	141

Geography
Land area	34.78 sq mi
Water area	0.38 sq mi
Latitude	42.1205
Longitude	-89.1860
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	23.5%	39.0%	37.2%
$50k – $100k	40.9%	36.1%	29.6%
$100k – $200k	33.6%	21.2%	24.4%
Over $200k	2.0%	3.7%	8.8%

Demographics & statistics

3,118

Population

People per sq mi

49.6

Median age

$90,605

Median household income

$43,519

Per capita income

$199,300

Median home value

$810

Median monthly rent

86.4%

Home ownership

1.8%

Poverty rate

3.9%

Unemployment

1,153

Housing units

38.0%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

140

10–14

140

15–19

20–24

156

25–34

156

137

35–44

138

241

45–54

242

180

55–59

181

125

60–64

125

228

65–74

229

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	611	19.6%
18 and over	2,507	80.4%
65 and over	616	19.8%
Median age	49.6 years

Race & ethnicity

White 92.1%

Black or African American 2.9%

Two or more races 2.3%

Hispanic or Latino 1.7%

Other race 0.9%

Group	Count	%
White	2,922	92.1%
Black or African American	93	2.9%
Two or more races	72	2.3%
Hispanic or Latino	55	1.7%
Other race	30	0.9%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.5%	39.0%	37.2%
$50k – $100k	40.9%	36.1%	29.6%
$100k – $200k	33.6%	21.2%	24.4%
Over $200k	2.0%	3.7%	8.8%

$10k–$15k 1.2%

$15k–$25k 2.5%

$25k–$35k 2.6%

$35k–$50k 7.8%

$50k–$75k 18.8%

$75k–$100k 23.6%

$100k–$150k 20.1%

$150k–$200k 17.0%

$200k+ 6.3%

Range	% of households
$10k–$15k	1.2%
$15k–$25k	2.5%
$25k–$35k	2.6%
$35k–$50k	7.8%
$50k–$75k	18.8%
$75k–$100k	23.6%
$100k–$150k	20.1%
$150k–$200k	17.0%
$200k+	6.3%
Median income	$90,605

Housing

Home values

Under $50k 1.5%

$50k–$100k 3.9%

$100k–$150k 17.1%

$150k–$200k 27.8%

$200k–$300k 20.4%

$300k–$500k 20.6%

$500k–$1M 8.1%

$1M+ 0.5%

Housing overview

Metric	Value
Median home value	$199,300
Median rent / month	$810
Owner occupied	86.4%
Renter occupied	13.6%
Vacant	9.6%
Single-family detached	92.5%
Large apartment buildings	0.0%
Mobile homes	1.1%
Median rooms	6.4
Avg household size (owned)	2.67

Year built

Era	%
2020 or later	0.0%
2010–2019	0.3%
2000–2009	17.2%
1990–1999	15.1%
1980–1989	9.7%
1970–1979	27.6%
1960–1969	15.3%
1950–1959	5.6%
1940–1949	4.0%
1939 or earlier	5.2%

Bedrooms

Size	% of units
No bedroom (studio)	1.2%
1 bedroom	2.2%
2 bedrooms	17.6%
3 bedrooms	58.9%
4 bedrooms	13.4%
5+ bedrooms	6.8%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	19.7%
2 vehicles	53.7%
3 or more	26.7%

Heating fuel

Fuel type	%
Utility gas	75.7%
Electricity	4.6%
Propane / LP gas	9.8%
Fuel oil	1.3%
Wood	2.6%
No fuel used	1.8%

Households & families

Household type	Count	%
Married-couple family	830	69.8%
Cohabiting couple	32	2.7%
Male householder, no spouse	182	15.3%
Female householder, no spouse	145	12.2%
Households with children under 18	312	26.2%
Households with seniors (65+)	423	35.6%
Average household size	2.62

Marital status

Status	Male	Female
Never married	20.9%	15.0%
Married	68.6%	73.0%
Separated	0.0%	0.0%
Widowed	2.0%	7.4%
Divorced	8.5%	4.7%

Education

Less than 9th grade 1.3%

Some HS, no diploma 4.0%

HS graduate 28.0%

Some college, no degree 18.4%

Associate's degree 10.4%

Bachelor's degree 25.3%

Graduate / professional 12.7%

Metric	%
HS diploma or higher	94.7%
Bachelor's or higher	38.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	31	5.3%
Kindergarten	4	0.7%
Elementary school	351	60.0%
High school	125	21.4%
College / grad school	74	12.6%

Employment

Industry of employment

Education & healthcare 36.0%

Manufacturing 16.7%

Professional & management 10.8%

Construction 9.5%

Transportation & utilities 8.1%

Retail trade 5.2%

Other services 4.8%

Finance & real estate 2.7%

Agriculture & mining 1.7%

Information 1.6%

Arts, food & hospitality 1.6%

Public administration 1.1%

Wholesale trade 0.2%

Occupation

Category	%
Management, business & arts	39.6%
Service	11.2%
Sales & office	9.3%
Natural resources & construction	13.0%
Production & transportation	26.9%

Employment type

Type	%
Private sector	70.9%
Government	22.7%
Self-employed	6.4%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	87.3%
Carpool	5.6%
Public transit	0.0%
Walk	0.5%
Work from home	6.2%
Other means	0.4%
Avg commute (minutes)	26.8

Poverty

All people 1.8%

Under 18 years 2.9%

18 and over 1.5%

Married-couple families 0.4%

Female-led households 9.5%

Income support

Source	% of households
Social Security	36.1%
Retirement income	39.9%
Supplemental Security	1.3%
Cash public assistance	0.3%
Food stamps / SNAP	0.5%

Health indicators

Condition	%
Obesity	36.9%
High blood pressure	33.5%
High cholesterol	34.1%
Diabetes	9.5%
Heart disease	6.2%
Stroke	2.8%
Asthma	9.7%
Arthritis	25.8%
Kidney disease	2.7%
Pulmonary disease	6.9%
Cancer	6.7%

Behavior / access	%
Smoking	18.1%
Binge drinking	15.8%
No physical activity	23.2%
Less than 7 hrs sleep	31.1%
Depression	18.0%
Fair or poor health	13.2%
Poor mental health	12.8%
Poor physical health	9.6%
No health insurance	9.7%
Visited doctor (checkup)	76.1%
Visited dentist	66.2%
Cholesterol screening	90.3%
Teeth loss	12.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	85	3.4%

Disability	%
Any disability	14.5%
Under 18	2.3%
18–64 years	6.5%
65 and over	51.3%

Health insurance coverage

Type	%
Private insurance	80.3%
Public insurance	25.7%
No insurance	6.1%
Uninsured under 19	1.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,998	96.2%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,060	98.1%
Born in same state	3,057	98.0%
Born in different state	2,564	82.2%
Foreign born	3	0.1%
Naturalized citizen	58	1.9%
Not a US citizen	58	100.0%

Ancestry

Ancestry	Count	%
Italian	535	17.2%
French	334	10.7%
Arab	221	7.1%
Polish	74	2.4%

Ancestry	Count	%
German	37	1.2%
English	22	0.7%
Dutch	12	0.4%
Norwegian	10	0.3%

Technology access

Metric	% of households
Computer access	38.1%
Internet access	98.7%

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

Frequently asked questions about ZIP code 61084

What city is ZIP code 61084 in?

ZIP code 61084 is primarily assigned to Stillman Valley, Illinois.

What county is ZIP code 61084 in?

ZIP code 61084 falls within Ogle County, Illinois.

Is ZIP code 61084 mostly owner-occupied?

86% of occupied units in ZIP code 61084 are owner-occupied, well above the national average.

Does ZIP code 61084 have a large retiree population?

36% of households in ZIP code 61084 receive Social Security income, suggesting a significant retiree or disability population.

What is the population of ZIP code 61084?

ZIP code 61084 has an estimated population of 3,118 residents, with a density of 90 people per square mile.

What is the typical home value in ZIP code 61084?

The median home value in ZIP code 61084 is $199,300.

What timezone is ZIP code 61084 in?

ZIP code 61084 observes the CST timezone.