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Illinois ZIP Codes
Rock Island County
Rapids City, IL
61278
61278 ZIP Code — Rapids City, IL
Rock Island County, Illinois
ZIP code 61278 is located in
Rapids City ,
Illinois ,
within Rock Island County .
It covers approximately 1.55 square miles and serves a population of
657 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 309 .
About ZIP code 61278
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 $247,100. Owner-occupancy is high at 91%, well above the national average.
Median household income is $84,167. 47% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with manufacturing as the leading industry. The average commute of 22 minutes is near the national average.
Educational attainment is near the national average, with 31% of residents holding a bachelor's degree or higher.
Notable community characteristics include a notable veteran presence at 13% of civilians, above the national average of 7%.
Overall, ZIP code 61278 reflects a community defined by a strong veteran community, high homeownership, and a significant Social Security-dependent population.
61278 ZIP code map
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Cities in ZIP code 61278
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Demographics
updated 05/2026
Population
Total population
657
Population density
424 / sq mi
State FIPS
17
County FIPS
161
Geography
Land area
1.55 sq mi
Water area
0.19 sq mi
Latitude
41.5801
Longitude
-90.3435
Timezone
Central (CT)
Area code
309
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
50.6%
43.5%
37.2%
$50k – $100k
16.9%
33.1%
29.6%
$100k – $200k
24.1%
19.8%
24.4%
Over $200k
8.4%
3.5%
8.8%
Demographics & statistics
$84,167
Median household income
$247,100
Median home value
$1,193
Median monthly rent
30.9%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 170 25.9% 18 and over 487 74.1% 65 and over 180 27.4% Median age 43.9 years
Race & ethnicity
Black or African American
0.1%
Group Count % White 595 86.6% Two or more races 40 5.8% Hispanic or Latino 30 4.4% Asian 21 3.1% Black or African American 1 0.1%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
50.6%
43.5%
37.2%
$50k – $100k
16.9%
33.1%
29.6%
$100k – $200k
24.1%
19.8%
24.4%
Over $200k
8.4%
3.5%
8.8%
Range % of households Under $10k 4.1% $10k–$15k 4.1% $15k–$25k 13.5% $25k–$35k 2.6% $35k–$50k 13.9% $50k–$75k 8.6% $75k–$100k 9.8% $100k–$150k 15.8% $150k–$200k 10.9% $200k+ 16.5% Median income $84,167
Housing
Housing overview
Metric Value Median home value $247,100 Median rent / month $1,193 Owner occupied 91.0% Renter occupied 9.0% Vacant 19.1% Single-family detached 98.2% Large apartment buildings 0.0% Mobile homes 0.0% Median rooms 6.0 Avg household size (owned) 2.57
Year built
Era % 2020 or later 0.0% 2010–2019 2.1% 2000–2009 19.1% 1990–1999 12.5% 1980–1989 7.0% 1970–1979 8.8% 1960–1969 14.0% 1950–1959 8.8% 1940–1949 8.2% 1939 or earlier 19.5%
Bedrooms
Size % of units No bedroom (studio) 0.0% 1 bedroom 4.3% 2 bedrooms 22.8% 3 bedrooms 41.6% 4 bedrooms 20.4% 5+ bedrooms 10.9%
Vehicles per household
Vehicles % of households No vehicle 0.0% 1 vehicle 34.2% 2 vehicles 47.4% 3 or more 18.4%
Heating fuel
Fuel type % Utility gas 78.9% Electricity 9.4% Propane / LP gas 11.7%
Households & families
Household type Count % Married-couple family 160 60.2% Cohabiting couple 2 0.8% Male householder, no spouse 24 9.0% Female householder, no spouse 80 30.1% Households with children under 18 71 26.7% Households with seniors (65+) 133 50.0% Average household size 2.47
Marital status
Status Male Female Never married 22.1% 11.5% Married 70.4% 59.9% Separated 3.5% 3.9% Widowed 1.8% 10.4% Divorced 2.2% 14.3%
Education
Some college, no degree
14.3%
Graduate / professional
12.1%
Metric % HS diploma or higher 91.7% Bachelor's or higher 30.9%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 11 5.5% Kindergarten 7 3.5% Elementary school 110 55.3% High school 30 15.1% College / grad school 41 20.6%
Employment
Industry of employment
Education & healthcare
20.6%
Arts, food & hospitality
7.5%
Finance & real estate
6.0%
Professional & management
4.0%
Transportation & utilities
3.2%
Public administration
2.4%
Agriculture & mining
1.6%
Occupation
Category % Management, business & arts 50.4% Service 15.5% Sales & office 15.1% Natural resources & construction 11.1% Production & transportation 7.9%
Employment type
Type % Private sector 76.6% Government 11.5% Self-employed 11.9% Unpaid family workers 0.0%
Commute
Method % Drive alone 91.7% Carpool 2.0% Public transit 0.0% Walk 0.0% Work from home 5.2% Other means 1.2% Avg commute (minutes) 22.3
Poverty
Married-couple families
1.9%
Female-led households
8.0%
Income support
Source % of households Social Security 47.4% Retirement income 33.8% Supplemental Security 1.5% Cash public assistance 0.8% Food stamps / SNAP 9.4%
Health indicators
Condition % Obesity 33.7% High blood pressure 33.0% High cholesterol 35.0% Diabetes 10.6% Heart disease 7.0% Stroke 3.0% Asthma 9.4% Arthritis 28.4% Kidney disease 2.9% Pulmonary disease 7.2% Cancer 7.7%
Behavior / access % Smoking 16.5% Binge drinking 14.8% No physical activity 23.7% Less than 7 hrs sleep 32.5% Depression 18.3% Fair or poor health 13.3% Poor mental health 11.9% Poor physical health 9.6% No health insurance 8.9% Visited doctor (checkup) 79.5% Visited dentist 67.3% Cholesterol screening 91.8% Teeth loss 11.5%
Veterans & disability
Veterans Count % Civilian veterans 62 12.7%
Disability % Any disability 11.6% Under 18 5.3% 18–64 years 3.6% 65 and over 31.1%
Health insurance coverage
Type % Private insurance 84.3% Public insurance 33.5% No insurance 2.0% Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 631 96.0% 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) 629 95.7% Born in same state 621 94.5% Born in different state 363 55.3% Foreign born 8 1.2% Naturalized citizen 28 4.3% Not a US citizen 28 100.0%
Ancestry
Ancestry Count % Italian 147 22.4% French 82 12.5% Polish 42 6.4% Arab 13 2%
Ancestry Count % English 6 0.9% Irish 3 0.5% Dutch 1 0.2%
Technology access
Metric % of households Computer access 40.5% Internet access 97.4%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 61278
What city is ZIP code 61278 in?
ZIP code 61278 is primarily assigned to Rapids City, Illinois.
What county is ZIP code 61278 in?
ZIP code 61278 falls within Rock Island County, Illinois.
Does ZIP code 61278 have an older population?
27% of residents in ZIP code 61278 are 65 or older, above the national average of ~17%.
Is ZIP code 61278 mostly owner-occupied?
91% of occupied units in ZIP code 61278 are owner-occupied, well above the national average.
Does ZIP code 61278 have a large retiree population?
47% of households in ZIP code 61278 receive Social Security income, suggesting a significant retiree or disability population.
Does ZIP code 61278 have a large veteran population?
13% of civilians in ZIP code 61278 are veterans, above the national average of ~7%.
What timezone is ZIP code 61278 in?
ZIP code 61278 observes the CST timezone.
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