Castine ZIP Codes — Hancock County, ME

There are 2 unique ZIP codes in Castine, Maine. Area code: 207.

ZIP codes

7.78

sq mi land

12.23

sq mi water

207

area code

Castine, ME ZIP code map

About Castine, ME

Castine, Maine, is a scenic coastal town located in Hancock County. Known for its rich maritime history and stunning landscapes, this charming community offers a unique blend of natural beauty and cultural heritage. The town's picturesque waterfront and historic architecture make it a desirable destination for visitors and residents alike.

Location & geography

Castine is situated on the eastern shore of Penobscot Bay, approximately 25 miles from Bangor and about 13 miles from the town of Blue Hill. The town covers a land area of 7.78 square miles and is surrounded by water, with a water area of 12.23 square miles. Its terrain is characterized by rocky coastlines and lush greenery, creating a tranquil environment for both locals and tourists.

Community & economy

The character of Castine is deeply rooted in its historical significance and strong sense of community. The economy is diversified, with industries ranging from tourism and hospitality to education, mainly due to the presence of the Maine Maritime Academy. Daily life in Castine is influenced by its picturesque setting, fostering a laid-back lifestyle and encouraging outdoor activities such as boating and hiking.

Transportation

Castine is accessible via Route 166, which connects it to other nearby towns and communities. The closest major airport is Bangor International Airport, approximately 31 miles away, providing regional and national flights. Public transit options are limited, making personal vehicles the primary mode of transportation for residents and visitors.

History

Founded in the early 18th century, Castine has a historical significance stemming from its strategic location during colonial times. It was a key site during the American Revolutionary War and later became known for shipbuilding and maritime trade, as well as the influence of the Maine Maritime Academy established in the 1940s. Throughout its history, Castine has been a center of cultural activities and historical events that continue to resonate with its community.

Did you know?

One surprising fact about Castine is that it is home to one of the oldest continuously operating libraries in Maine, the Castine Library, established in 1814. Additionally, the town plays host to the Castine Arts and Crafts Festival, which showcases local artisans and draws visitors from across the region.

ZIP codes for Castine, ME (2)

ZIP code	City	County	Map
04420	Castine	Hancock	View map
04421	Castine	Hancock	View map

Demographics & statistics

1,289

Population

20.8

Median age

$78,088

Median household income

$29,062

Per capita income

$413,300

Median home value

$992

Median monthly rent

77.2%

Home ownership

15.3%

Poverty rate

3.4%

Unemployment

649

Housing units

64.2%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

235

15–19

143

178

20–24

108

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	134	10.4%
18 and over	1,155	89.6%
65 and over	220	17.1%
Median age	20.8 years

Race & ethnicity

White 86.9%

Two or more races 7.6%

Hispanic or Latino 3.4%

Black or African American 1.8%

Asian 0.1%

Other race 0.1%

Group	Count	%
White	1,160	86.9%
Two or more races	102	7.6%
Hispanic or Latino	46	3.4%
Black or African American	24	1.8%
Asian	2	0.1%
Other race	1	0.1%

Household income

Under $10k 14.2%

$15k–$25k 0.3%

$25k–$35k 6.0%

$35k–$50k 7.3%

$50k–$75k 18.4%

$75k–$100k 11.4%

$100k–$150k 9.5%

$150k–$200k 20.9%

$200k+ 12.0%

Range	% of households
Under $10k	14.2%
$15k–$25k	0.3%
$25k–$35k	6.0%
$35k–$50k	7.3%
$50k–$75k	18.4%
$75k–$100k	11.4%
$100k–$150k	9.5%
$150k–$200k	20.9%
$200k+	12.0%
Median income	$78,088

Housing

Home values

Under $50k 2.5%

$100k–$150k 3.3%

$150k–$200k 4.1%

$200k–$300k 9.0%

$300k–$500k 36.5%

$500k–$1M 38.5%

$1M+ 6.1%

Housing overview

Metric	Value
Median home value	$413,300
Median rent / month	$992
Owner occupied	77.2%
Renter occupied	22.8%
Vacant	56.2%
Single-family detached	92.6%
Large apartment buildings	0.0%
Mobile homes	3.7%
Median rooms	6.5
Avg household size (owned)	2.24

Year built

Era	%
2020 or later	0.0%
2010–2019	0.8%
2000–2009	13.6%
1990–1999	11.0%
1980–1989	14.1%
1970–1979	11.4%
1960–1969	3.6%
1950–1959	5.1%
1940–1949	3.7%
1939 or earlier	36.6%

Bedrooms

Size	% of units
No bedroom (studio)	6.9%
1 bedroom	4.3%
2 bedrooms	19.3%
3 bedrooms	35.0%
4 bedrooms	21.8%
5+ bedrooms	12.8%

Vehicles per household

Vehicles	% of households
No vehicle	13.3%
1 vehicle	19.0%
2 vehicles	46.2%
3 or more	21.5%

Heating fuel

Fuel type	%
Electricity	3.2%
Propane / LP gas	16.1%
Fuel oil	71.5%
Wood	8.2%

Households & families

Household type	Count	%
Married-couple family	173	54.7%
Cohabiting couple	10	3.2%
Male householder, no spouse	51	16.1%
Female householder, no spouse	82	25.9%
Households with children under 18	86	27.2%
Households with seniors (65+)	144	45.6%
Average household size	2.24

Marital status

Status	Male	Female
Never married	70.2%	35.3%
Married	25.9%	40.3%
Separated	0.0%	7.4%
Widowed	0.4%	3.5%
Divorced	3.5%	13.6%

Education

Less than 9th grade 1.3%

Some HS, no diploma 0.4%

HS graduate 9.4%

Some college, no degree 13.9%

Associate's degree 10.7%

Bachelor's degree 27.1%

Graduate / professional 37.1%

Metric	%
HS diploma or higher	98.3%
Bachelor's or higher	64.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	75	9.6%
High school	52	6.7%
College / grad school	654	83.7%

Employment

Industry of employment

Education & healthcare 43.8%

Arts, food & hospitality 17.4%

Retail trade 8.5%

Manufacturing 7.9%

Finance & real estate 7.2%

Construction 5.3%

Other services 2.6%

Transportation & utilities 2.3%

Agriculture & mining 1.8%

Public administration 1.8%

Professional & management 1.4%

Occupation

Category	%
Management, business & arts	43.8%
Service	21.5%
Sales & office	20.1%
Natural resources & construction	4.8%
Production & transportation	9.9%

Employment type

Type	%
Private sector	81.5%
Government	16.2%
Self-employed	2.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	35.0%
Carpool	4.4%
Public transit	0.0%
Walk	41.2%
Other means	4.2%
Avg commute (minutes)	14.3

Poverty

All people 15.3%

Under 18 years 26.9%

18 and over 12.6%

Married-couple families 1.2%

Female-led households 53.6%

Income support

Source	% of households
Social Security	39.6%
Retirement income	35.8%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	10.4%

Health indicators

Condition	%
High blood pressure	22.1%
High cholesterol	25.5%
Heart disease	5.1%
Stroke	2.1%
Asthma	9.9%
Arthritis	17.3%
Kidney disease	2.2%
Pulmonary disease	5.6%
Cancer	5.0%

Behavior / access	%
Binge drinking	20.8%
No physical activity	14.7%
Less than 7 hrs sleep	28.1%
Fair or poor health	9.3%
Poor mental health	14.6%
Poor physical health	7.3%
No health insurance	12.5%
Visited doctor (checkup)	71.8%
Visited dentist	68.7%
Cholesterol screening	79.2%
Teeth loss	13.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	83	7.2%

Disability	%
Any disability	10.3%
Under 18	0.0%
18–64 years	7.4%
65 and over	29.1%

Health insurance coverage

Type	%
Private insurance	83.7%
Public insurance	26.0%
Uninsured under 19	7.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,279	99.2%
Spanish	5	0.4%
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)	1,220	94.6%
Born in same state	1,203	93.3%
Born in different state	506	39.3%
Foreign born	17	1.3%
Naturalized citizen	69	5.4%
Not a US citizen	33	47.8%

Ancestry

Ancestry	Count	%
French	226	17.5%
Italian	157	12.2%
Arab	72	5.6%
German	38	2.9%
Polish	12	0.9%

Ancestry	Count	%
Norwegian	12	0.9%
Irish	10	0.8%
Dutch	7	0.5%
English	3	0.2%

Technology access

Metric	% of households
Computer access	24.5%
Internet access	99.7%

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

Frequently asked questions

What ZIP codes does Castine, ME have?

Castine, ME has two ZIP codes: 04420 and 04421. Each ZIP code serves a distinct delivery area within the city and surrounding region.