Postal Codes

61084 ZIP Code

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ZIP code 61084 covers Stillman Valley, Illinois, with a population of about 3,166 and a median household income of $93,264.

Population
3,16691 per square mile
Median age
5213.3 points above the US average
Median household income
$93,2641.1× the Illinois median
Poverty rate
1.8%10.6 points below the US average
Typical home value
$292,441up 30.9% in five years
Degree or higher
36.8%1.8 points above the US average
Homeownership
87.4%22.4 points above the US average
Time zone
Central UTC-06:00observes daylight saving time
Businesses
49

Where 61084 is

Stillman Valley, Illinois — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population3,166
Median age52
Family households76.4%
Born outside the US2.4%
Speaks a language other than English at home0.9%
White (non-Hispanic)92%
Black (non-Hispanic)2.4%
Asian (non-Hispanic)0.2%
Hispanic or Latino2.9%
Veterans3.7%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$93,264
Income per person$47,892
Poverty rate1.8%
Households on SNAP or cash assistance1.9%

Household income distribution

Under $10k1.0%
$10–15k1.0%
$15–20k0.2%
$20–25k1.9%
$25–30k1.5%
$30–35k0.0%
$35–40k1.2%
$40–45k4.1%
$45–50k1.0%
$50–60k5.0%
$60–75k11.3%
$75–100k26.0%
$100–125k9.5%
$125–150k15.6%
$150–200k11.7%
$200k or more9.0%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed1,500
Mean adjusted gross income$97,582
Returns declaring $200,000 or more8%
Returns, under $25k21.3%
Returns, $25k–$50k19.3%
Returns, $50k–$75k12.0%
Returns, $75k–$100k13.3%
Returns, $100k–$200k26.0%
Returns, $200k or more8.0%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$204,400
Owner-occupied87.4%
Vacant homes10.9%
Median year built1976

What the homes are

Detached house93.3%
Attached house0.6%
2 to 4 units5.1%
Mobile home1%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$292,441as of 2026-07
Typical home value, 1 yearup 8.8%
Typical home value, 5 yearsup 30.9%
Typical home value, 10 yearsup 84.8%
Typical home value since 2000
200920172026$292,441$158,272

$185,622 in 2009 to $292,441 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate0.9%
Bachelor's degree or higher36.8%
High school diploma or higher96.9%
Works from home9.5%
Drives to work alone82.2%
Takes public transport0%
Commutes 45 minutes or more8.9%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity37.9% 4.5 pts above the national average of 33.4%
Diagnosed diabetes10.1% 1.9 pts below the national average of 12%
Currently smokes11.1% 2.1 pts below the national average of 13.2%
High blood pressure34.2% same as the national average of 34.1%
Fair or poor general health14.6% 5.7 pts below the national average of 20.3%
No health insurance (18–64)5.5% 5.8 pts below the national average of 11.3%
Depression21.6% same as the national average of 21.9%
No leisure-time physical activity18.8% 6.6 pts below the national average of 25.4%
Arthritis27.3% 2.2 pts above the national average of 25.1%
Binge drinking19.2% 3.2 pts above the national average of 16%
Taking blood pressure medication77.5% 2.8 pts above the national average of 74.7%
Cancer (non-skin)9.9% 2.2 pts above the national average of 7.7%
Current asthma10.1% same as the national average of 10.4%
Coronary heart disease5.9% same as the national average of 6.2%
Routine check-up in past year79.5% 2.8 pts above the national average of 76.7%
Cholesterol screening89.7% 3.8 pts above the national average of 85.9%
Cognitive disability11.1% 3.7 pts below the national average of 14.8%
Colorectal screening67% 2.7 pts above the national average of 64.3%
COPD6.1% 0.5 pts below the national average of 6.6%
Visited a dentist72.1% 10.8 pts above the national average of 61.3%
Any disability25.4% 5.3 pts below the national average of 30.7%
Lacks emotional support21.9% 2.9 pts below the national average of 24.8%
Food insecurity8.4% 8.7 pts below the national average of 17.1%
Received food stamps7.3% 7 pts below the national average of 14.3%
Hearing disability6.5% same as the national average of 6.7%
High cholesterol37.2% 1 pts above the national average of 36.2%
Housing insecurity7.8% 6 pts below the national average of 13.8%
Independent living disability6.3% 2.1 pts below the national average of 8.4%
Lacks transport5% 4.2 pts below the national average of 9.2%
Loneliness30.6% 3.8 pts below the national average of 34.4%
Mammography use73.4% 2.5 pts below the national average of 75.9%
Poor mental health (14+ days)15.2% 1.6 pts below the national average of 16.8%
Mobility disability11.4% 2.6 pts below the national average of 14%
Poor physical health (14+ days)11.8% 1.7 pts below the national average of 13.5%
Self-care disability2.8% 1.2 pts below the national average of 4%
Utility shut-off threat4.8% 4 pts below the national average of 8.8%
Sleeps under 7 hours33.2% 3.2 pts below the national average of 36.4%
Stroke3% same as the national average of 3.4%
All natural teeth lost8% 5 pts below the national average of 13%
Vision disability3.4% 2.2 pts below the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments49
People employed224
Annual payroll$7,875,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 62.9% of US census tracts
FEMA ratingRelatively Low to Relatively Moderate across the 3 census tracts this ZIP code covers
Expected annual loss76.8 out of 100
Community resilience77.1 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Drought92.7Relatively Moderate at its worst in this ZIP code
Hail90.8Relatively High at its worst in this ZIP code
Strong wind85Relatively High at its worst in this ZIP code
Cold wave83.2Relatively High at its worst in this ZIP code
Tornado79.6Relatively High at its worst in this ZIP code
River flooding76.7Relatively High at its worst in this ZIP code
Landslide72Very Low at its worst in this ZIP code
Ice storm63.5Relatively Moderate at its worst in this ZIP code
Wildfire56.1Very Low at its worst in this ZIP code
Earthquake54Relatively Low at its worst in this ZIP code
Lightning43.1Relatively Moderate at its worst in this ZIP code
Winter weather32.5Relatively Moderate at its worst in this ZIP code
Hurricane24.1Very Low at its worst in this ZIP code
Heat wave19.6Relatively Low at its worst in this ZIP code
Compared with Illinois and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPIllinoisUnited States
Median household income$93,264$81,702$78,538
Income per person$47,892$45,104$43,289
Poverty rate1.8%11.7%12.4%
Median home value$204,400$250,500$303,400
Median gross rent$1,227$1,348
Homeownership87.4%66.8%65%
Bachelor's degree or higher36.8%37.2%35%
Unemployment rate0.9%5.8%5.2%
Works from home9.5%14%13.5%
Born outside the US2.4%14.4%13.9%
Median age5238.938.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationROCKFORD GTR ROCKFORD AP, IL US11.5 km away
Rain in a year37 in
Snow in a year37 in

Average high and low by month

January29.1°F / 14.5°F1.6 in rain, 10.9 in snow
February33.4°F / 17.8°F1.63 in rain, 8.5 in snow
March46.5°F / 28.1°F2.4 in rain, 4.9 in snow
April59.7°F / 38.5°F3.75 in rain, 0.9 in snow
May71.2°F / 49.5°F4.18 in rain
June80.7°F / 59.6°F5.23 in rain
July83.9°F / 63.6°F3.81 in rain
August82°F / 61.8°F4.19 in rain
September75.3°F / 53.5°F3.62 in rain
October62.3°F / 41.8°F2.63 in rain, 0.2 in snow
November47.1°F / 30.5°F2.27 in rain, 2.3 in snow
December34.3°F / 20.2°F1.93 in rain, 9.4 in snow
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarket7% of this ZIP code's area
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

Meridian Community Unit School District 223100% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability7more vulnerable than 7% of US census tracts
Socioeconomic status15more vulnerable than 15% of US census tracts
Household characteristics23more vulnerable than 23% of US census tracts
Racial and ethnic minority status14more vulnerable than 14% of US census tracts
Housing type and transport9more vulnerable than 9% of US census tracts
Walkability3.6 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

61010 Byron, IL6.4 km away
61020 Davis Junction, IL9 km away
61043 Holcomb, IL9.8 km away
61015 Chana, IL14 km away
61052 Monroe Center, IL14.3 km away
61049 Lindenwood, IL14.9 km away
61109 Rockford, IL15.8 km away
61102 Rockford, IL16.1 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Ogle County93% of this ZIP code's land area
Winnebago County7% of this ZIP code's land area
Time zoneCentral (UTC-06:00 standard)
Daylight saving timeObserved
Land area34.78 sq mi
Water area0.38 sq mi
Population density91 people per sq mi
Latitude, longitude42.1183, -89.1898

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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