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Maine ZIP Codes
Somerset County
Rockwood, ME
04478
04478 ZIP Code — Rockwood, ME
Somerset County, Maine
ZIP code 04478 is located in
Rockwood ,
Maine ,
within Somerset County .
It covers approximately 257.61 square miles and serves a population of
507 residents.
This is a standard ZIP code in the Eastern (ET) timezone,
served by area code 207 .
About ZIP code 04478
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 $324,200. Owner-occupancy is high at 90%, well above the national average.
The gap between median ($58,304) and mean household income suggests income inequality — a small number of higher earners pull the average up. 48% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is service, with arts, entertainment, and food service as the leading industry. The average commute of 29 minutes is near the national average. Remote work is prevalent — 24% of workers work from home.
Educational attainment is near the national average, with 39% of residents holding a bachelor's degree or higher.
Health indicators show elevated rates of diabetes (16%), smoking (23%) compared to national benchmarks.
Notable community characteristics include a notable veteran presence at 15% of civilians, above the national average of 7%.
Overall, ZIP code 04478 reflects a community defined by a strong veteran community, high homeownership, a high rate of remote workers, and a significant Social Security-dependent population.
04478 ZIP code map
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Cities in ZIP code 04478
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Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
507
Population density
2 / sq mi
State FIPS
23
County FIPS
025
Geography
Land area
257.61 sq mi
Water area
109.30 sq mi
Latitude
45.6114
Longitude
-69.9183
Timezone
Eastern (ET)
Area code
207
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
65.4%
54.1%
42.3%
$50k – $100k
16.3%
31.8%
32.3%
$100k – $200k
15.7%
12.7%
20.6%
Over $200k
2.6%
1.4%
4.9%
Demographics & statistics
$58,304
Median household income
$324,200
Median home value
38.5%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 33 6.5% 18 and over 474 93.5% 65 and over 270 53.3% Median age 65.2 years
Race & ethnicity
Household income
Income range
This ZIP
County avg
State avg
Under $50k
65.4%
54.1%
42.3%
$50k – $100k
16.3%
31.8%
32.3%
$100k – $200k
15.7%
12.7%
20.6%
Over $200k
2.6%
1.4%
4.9%
Range % of households $15k–$25k 19.4% $25k–$35k 13.1% $35k–$50k 11.4% $50k–$75k 13.1% $75k–$100k 3.8% $100k–$150k 32.1% $150k–$200k 3.8% $200k+ 3.4% Median income $58,304
Housing
Housing overview
Metric Value Median home value $324,200 Median rent / month $0 Owner occupied 90.3% Renter occupied 9.7% Vacant 75.4% Single-family detached 93.6% Large apartment buildings 0.0% Mobile homes 5.0% Median rooms 5.0 Avg household size (owned) 2.12
Year built
Era % 2020 or later 0.0% 2010–2019 15.0% 2000–2009 7.2% 1990–1999 8.2% 1980–1989 8.2% 1970–1979 20.1% 1960–1969 1.2% 1950–1959 14.7% 1940–1949 4.7% 1939 or earlier 20.6%
Bedrooms
Size % of units No bedroom (studio) 0.0% 1 bedroom 18.9% 2 bedrooms 20.7% 3 bedrooms 40.6% 4 bedrooms 11.2% 5+ bedrooms 8.6%
Vehicles per household
Vehicles % of households No vehicle 0.0% 1 vehicle 14.3% 2 vehicles 65.4% 3 or more 20.3%
Heating fuel
Fuel type % Electricity 5.9% Propane / LP gas 48.5% Fuel oil 35.4% Wood 10.1%
Households & families
Household type Count % Married-couple family 173 73.0% Cohabiting couple 24 10.1% Male householder, no spouse 7 3.0% Female householder, no spouse 33 13.9% Households with children under 18 33 13.9% Households with seniors (65+) 149 62.9% Average household size 2.14
Marital status
Status Male Female Never married 7.1% 24.9% Married 82.3% 55.9% Separated 6.2% 0.0% Widowed 4.4% 2.8% Divorced 0.0% 16.4%
Education
Some college, no degree
18.6%
Graduate / professional
14.0%
Metric % HS diploma or higher 98.4% Bachelor's or higher 38.5%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 0 0.0% Kindergarten 0 0.0% Elementary school 0 0.0% High school 42 100.0% College / grad school 0 0.0%
Employment
Industry of employment
Arts, food & hospitality
23.8%
Education & healthcare
21.2%
Professional & management
15.0%
Transportation & utilities
4.7%
Finance & real estate
3.6%
Public administration
3.6%
Occupation
Category % Management, business & arts 32.1% Service 40.4% Sales & office 13.0% Natural resources & construction 14.5% Production & transportation 0.0%
Employment type
Type % Private sector 77.7% Government 16.1% Self-employed 6.2% Unpaid family workers 0.0%
Commute
Method % Drive alone 57.5% Carpool 18.6% Public transit 0.0% Walk 0.0% Work from home 24.0% Other means 0.0% Avg commute (minutes) 29.2
Poverty
Married-couple families
0.0%
Female-led households
72.7%
Income support
Source % of households Social Security 48.1% Retirement income 36.3% Supplemental Security 3.8% Cash public assistance 3.4% Food stamps / SNAP 3.8%
Health indicators
Condition % Obesity 35.2% High blood pressure 46.1% High cholesterol 42.1% Diabetes 16.2% Heart disease 12.3% Stroke 5.2% Asthma 11.3% Arthritis 39.0% Kidney disease 4.6% Pulmonary disease 14.2% Cancer 9.5%
Behavior / access % Smoking 22.7% Binge drinking 10.9% No physical activity 30.0% Less than 7 hrs sleep 31.6% Depression 21.8% Fair or poor health 19.8% Poor mental health 12.7% Poor physical health 14.0% No health insurance 13.4% Visited doctor (checkup) 83.8% Visited dentist 56.7% Cholesterol screening 93.0% Teeth loss 24.8%
Veterans & disability
Veterans Count % Civilian veterans 69 14.6%
Disability % Any disability 19.1% Under 18 0.0% 18–64 years 16.2% 65 and over 23.7%
Health insurance coverage
Type % Private insurance 67.7% Public insurance 57.8% No insurance 7.1% Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 507 100.0% 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) 507 100.0% Born in same state 507 100.0% Born in different state 151 29.8% Foreign born 0 0.0% Naturalized citizen 0 0.0% Not a US citizen 0 0.0%
Ancestry
Ancestry Count % Arab 161 31.8% Italian 116 22.9% French 90 17.8%
Ancestry Count % German 31 6.1% English 13 2.6%
Technology access
Metric % of households Computer access 46.7% Internet access 90.7%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 04478
What city is ZIP code 04478 in?
ZIP code 04478 is primarily assigned to Rockwood, Maine.
What county is ZIP code 04478 in?
ZIP code 04478 falls within Somerset County, Maine.
Does ZIP code 04478 have an older population?
53% of residents in ZIP code 04478 are 65 or older, above the national average of ~17%.
Is ZIP code 04478 mostly owner-occupied?
90% of occupied units in ZIP code 04478 are owner-occupied, well above the national average.
Does ZIP code 04478 have a large retiree population?
48% of households in ZIP code 04478 receive Social Security income, suggesting a significant retiree or disability population.
What is the poverty rate in ZIP code 04478?
15% of residents in ZIP code 04478 live below the poverty line, above the national average.
What timezone is ZIP code 04478 in?
ZIP code 04478 observes the EST timezone.
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