04848 ZIP Code — Islesboro, ME

Waldo County, Maine

ZIP code 04848 is located in Islesboro, Maine, within Waldo County. It covers approximately 14.31 square miles and serves a population of 617 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 207.

About ZIP code 04848

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 $274,500. Owner-occupancy is high at 93%, well above the national average.

The gap between median ($73,611) and mean household income suggests income inequality — a small number of higher earners pull the average up. 57% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with construction as the leading industry. The average commute of 10 minutes is near the national average.

Educational attainment is near the national average, with 45% of residents holding a bachelor's degree or higher.

Overall, ZIP code 04848 reflects a community defined by high homeownership and a significant Social Security-dependent population.

617

population

14.31

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

04848 ZIP code map

Cities in ZIP code 04848

Below are the cities the US Postal Service accepts for ZIP code 04848. Using any city not on this list may result in mail delivery delays.

City	Status
Islesboro	Preferred

Nearby ZIP codes

04420 Castine (7.7 mi) 04849 Lincolnville (7.9 mi) 04421 Castine (9.3 mi) 04617 Brooksville (9.4 mi) 04650 Little Deer Isle (9.9 mi) 04843 Camden (10.6 mi) 04683 Sunset (11.1 mi) 04853 North Haven (11.5 mi) 04974 Searsport (12.8 mi) 04915 Belfast (12.9 mi) 04952 Morrill (13.6 mi) 04676 Sedgwick (13.7 mi)

Demographics updated 05/2026

Population
Total population	617
Population density	43 / sq mi
State FIPS	23
County FIPS	027

Geography
Land area	14.31 sq mi
Water area	54.57 sq mi
Latitude	44.3120
Longitude	-68.9140
Timezone	Eastern (ET)
Area code	207

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	42.9%	43.2%	42.3%
$50k – $100k	32.0%	35.6%	32.3%
$100k – $200k	18.4%	17.8%	20.6%
Over $200k	6.6%	3.4%	4.9%

Demographics & statistics

617

Population

People per sq mi

62.6

Median age

$73,611

Median household income

$55,848

Per capita income

$274,500

Median home value

Median monthly rent

92.7%

Home ownership

14.9%

Poverty rate

16.4%

Unemployment

738

Housing units

44.8%

Bachelor's or higher

Age distribution

Male Female

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

104

65–74

106

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	86	13.9%
18 and over	531	86.1%
65 and over	281	45.5%
Median age	62.6 years

Race & ethnicity

White 97.1%

Two or more races 2.1%

Hispanic or Latino 0.6%

Black or African American 0.2%

Group	Count	%
White	603	97.1%
Two or more races	13	2.1%
Hispanic or Latino	4	0.6%
Black or African American	1	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	42.9%	43.2%	42.3%
$50k – $100k	32.0%	35.6%	32.3%
$100k – $200k	18.4%	17.8%	20.6%
Over $200k	6.6%	3.4%	4.9%

Under $10k 0.9%

$10k–$15k 22.1%

$15k–$25k 2.0%

$25k–$35k 2.3%

$35k–$50k 6.4%

$50k–$75k 19.2%

$75k–$100k 16.3%

$100k–$150k 15.4%

$150k–$200k 6.4%

$200k+ 9.0%

Range	% of households
Under $10k	0.9%
$10k–$15k	22.1%
$15k–$25k	2.0%
$25k–$35k	2.3%
$35k–$50k	6.4%
$50k–$75k	19.2%
$75k–$100k	16.3%
$100k–$150k	15.4%
$150k–$200k	6.4%
$200k+	9.0%
Median income	$73,611

Housing

Home values

Under $50k 0.6%

$50k–$100k 4.1%

$100k–$150k 4.1%

$150k–$200k 0.9%

$200k–$300k 48.9%

$300k–$500k 10.0%

$500k–$1M 18.5%

$1M+ 12.9%

Housing overview

Metric	Value
Median home value	$274,500
Median rent / month	$0
Owner occupied	92.7%
Renter occupied	7.3%
Vacant	54.9%
Single-family detached	97.0%
Large apartment buildings	0.0%
Mobile homes	2.4%
Median rooms	6.2
Avg household size (owned)	1.81

Year built

Era	%
2020 or later	0.0%
2010–2019	9.8%
2000–2009	12.2%
1990–1999	10.6%
1980–1989	12.5%
1970–1979	8.3%
1960–1969	2.1%
1950–1959	3.8%
1940–1949	1.6%
1939 or earlier	39.2%

Bedrooms

Size	% of units
No bedroom (studio)	1.0%
1 bedroom	5.6%
2 bedrooms	29.0%
3 bedrooms	30.4%
4 bedrooms	24.0%
5+ bedrooms	10.0%

Vehicles per household

Vehicles	% of households
No vehicle	2.6%
1 vehicle	48.5%
2 vehicles	23.5%
3 or more	25.3%

Heating fuel

Fuel type	%
Electricity	23.8%
Propane / LP gas	3.8%
Fuel oil	55.5%
Wood	16.0%

Households & families

Household type	Count	%
Married-couple family	139	40.4%
Cohabiting couple	30	8.7%
Male householder, no spouse	97	28.2%
Female householder, no spouse	78	22.7%
Households with children under 18	78	22.7%
Households with seniors (65+)	219	63.7%
Average household size	1.76

Marital status

Status	Male	Female
Never married	32.5%	18.0%
Married	44.5%	52.8%
Separated	0.0%	0.0%
Widowed	2.6%	7.9%
Divorced	20.4%	21.3%

Education

Less than 9th grade 0.0%

Some HS, no diploma 2.4%

HS graduate 17.5%

Some college, no degree 31.2%

Associate's degree 4.1%

Bachelor's degree 18.7%

Graduate / professional 26.1%

Metric	%
HS diploma or higher	97.6%
Bachelor's or higher	44.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	8	7.5%
Kindergarten	3	2.8%
Elementary school	58	54.7%
High school	31	29.2%
College / grad school	6	5.7%

Employment

Industry of employment

Construction 24.8%

Other services 13.9%

Education & healthcare 13.0%

Professional & management 12.6%

Transportation & utilities 10.9%

Agriculture & mining 6.1%

Retail trade 5.7%

Finance & real estate 5.7%

Manufacturing 3.5%

Information 2.2%

Public administration 1.7%

Occupation

Category	%
Management, business & arts	47.0%
Service	5.2%
Sales & office	11.7%
Natural resources & construction	26.5%
Production & transportation	9.6%

Employment type

Type	%
Private sector	71.3%
Government	13.5%
Self-employed	15.2%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	60.4%
Carpool	12.0%
Public transit	0.0%
Walk	11.1%
Work from home	15.1%
Other means	1.3%
Avg commute (minutes)	9.9

Poverty

All people 14.9%

Under 18 years 2.3%

18 and over 16.9%

Married-couple families 0.0%

Female-led households 18.8%

Income support

Source	% of households
Social Security	57.3%
Retirement income	20.6%
Supplemental Security	1.5%
Cash public assistance	1.5%
Food stamps / SNAP	1.5%

Health indicators

Condition	%
Obesity	29.0%
High blood pressure	35.6%
High cholesterol	35.5%
Diabetes	9.5%
Heart disease	7.7%
Stroke	3.2%
Asthma	9.7%
Arthritis	30.2%
Kidney disease	3.2%
Pulmonary disease	7.7%
Cancer	9.5%

Behavior / access	%
Smoking	13.0%
Binge drinking	14.1%
No physical activity	18.2%
Less than 7 hrs sleep	29.9%
Depression	19.2%
Fair or poor health	10.8%
Poor mental health	11.3%
Poor physical health	8.8%
No health insurance	9.9%
Visited doctor (checkup)	77.7%
Visited dentist	70.2%
Cholesterol screening	93.0%
Teeth loss	13.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	11	2.1%

Disability	%
Any disability	17.2%
Under 18	9.3%
18–64 years	5.6%
65 and over	29.9%

Health insurance coverage

Type	%
Private insurance	68.2%
Public insurance	51.4%
No insurance	11.5%
Uninsured under 19	10.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	617	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)	594	96.3%
Born in same state	571	92.5%
Born in different state	192	31.1%
Foreign born	23	3.7%
Naturalized citizen	23	3.7%
Not a US citizen	12	52.2%

Ancestry

Ancestry	Count	%
French	180	29.2%
German	35	5.7%
Italian	34	5.5%
Arab	30	4.9%

Ancestry	Count	%
Polish	18	2.9%
English	15	2.4%
Norwegian	6	1%
Dutch	2	0.3%

Technology access

Metric	% of households
Computer access	55.8%
Internet access	96.5%

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

Frequently asked questions about ZIP code 04848

What city is ZIP code 04848 in?

ZIP code 04848 is primarily assigned to Islesboro, Maine.

What county is ZIP code 04848 in?

ZIP code 04848 falls within Waldo County, Maine.

Does ZIP code 04848 have an older population?

46% of residents in ZIP code 04848 are 65 or older, above the national average of ~17%.

Does ZIP code 04848 have a large retiree population?

57% of households in ZIP code 04848 receive Social Security income, suggesting a significant retiree or disability population.

Is ZIP code 04848 mostly owner-occupied?

93% of occupied units in ZIP code 04848 are owner-occupied, well above the national average.

What is the population of ZIP code 04848?

ZIP code 04848 has an estimated population of 617 residents, with a density of 43 people per square mile.

What timezone is ZIP code 04848 in?

ZIP code 04848 observes the EST timezone.