Castine, ME demographics:
population, income, and more

Total population
996
7.6% year-over-year change
Median household income
$168,516/yr
17.6% year-over-year change
Housing units
444
-2.6% year-over-year change

Castine population

How many people live in Castine

Castine is home to 996 residents, according to the most recent Census data. Gender-wise, 66% of Castine locals are male, and 34% are female.

Total population
996
7.6% year-over-year change
Gender ratio
Male
66%
657
Female
34%
339
Value Percent YoY change
Male 657 66% 7.7%
Female 339 34% 7.3%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Castine is 20, with the population distributed as follows: about 2.8% are children under 15, then 62.6% are in the 15 to 24 age group. Adults between 25 and 44 make up 3.5% of the population, while another 11% fall into the 45 to 64 bracket. Finally, around 20.1% are 65 or older.

Median age
20.4
Age breakdown
Under 15
2.8%
15 to 24
62.6%
25 to 44
3.5%
45 to 64
11%
Over 65
20.1%
Value Percent YoY change
Under 15 28 2.8% -20.0%
15 to 24 623 62.6% 8.9%
25 to 44 35 3.5% 20.7%
45 to 64 110 11% -0.9%
Over 65 200 20.1% 11.7%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Castine, 90.9% of the population are US-born citizens, while 7.6% have gained naturalized citizenship. At the same time, 1.5% of residents are non-citizens. There’s also a share of 8.1% that includes residents with two or more races.

Citizenship
U.S.-born citizens
90.9%
Non-U.S.-born citizens
7.6%
Non-citizens
1.5%
Value Percent YoY change
U.S.-born citizens 905 90.9% 6.2%
Non-U.S.-born citizens 76 7.6% 24.6%
Non-citizens 15 1.5% 15.4%
Racial breakdown
White
86.4%
Black or African American
4%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
8.1%
Other
1.5%
Value Percent
White 860 86.4%
Black or African American 40 4%
Two or more races 81 8.1%
Other 15 1.5%

Households in Castine

A peek inside Castine households

Castine has 183 households, with an average of 2 members in each. Of these, 74.9% are families, while the remaining 25.1% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
183
5.8% year-over-year change
Average people per household
2
Non-family households
46
Family households
137
Value Percent YoY change
Non-family households 46 25.1% 31.4%
Family households 137 74.9% -0.7%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Castine

The housing landscape of Castine

Castine's housing consists of 444 units, with 90.1% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 1.8% and offer a more compact, shared living style.

Housing units
444
-2.6% year-over-year change
Housing types
Value Percent
1 unit, detached 400 90.1%
1 unit, attached 8 1.8%
2 units 17 3.8%
3 or 4 units 8 1.8%
5 to 9 units 11 2.5%
Homes built since 2020
0
% year-over-year change

The age of buildings in Castine

In Castine, the median construction year is 1960. About 40.1% of homes were built before the 1940s, with another 2.9% going up by 1949. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 178 40.1% -4.3%
Built between 1940 and 1949 13 2.9% 0.0%
Built between 1950 and 1959 30 6.8% 66.7%
Built between 1960 and 1969 36 8.1% 71.4%
Built between 1970 and 1979 38 8.6% -39.7%
Built between 1980 and 1989 34 7.7% 0.0%
Built between 1990 and 1999 45 10.1% -4.3%
Built between 2000 and 2009 64 14.4% -3.0%
Built between 2010 and 2019 6 1.4% -25.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Castine occupancy rates

Out of the 183 occupied housing units in Castine, 90.2% are owner-occupied, while 9.8% are lived in by tenants. Meanwhile, 58.8% of all homes on the local market sit vacant.

Occupied housing units
183
5.8% year-over-year change
Occupancy breakdown
Renter occupied
18
Owner occupied
165
Value Percent YoY
change
Renter occupied 18 9.8% -18.2%
Owner occupied 165 90.2% 9.3%
Unoccupied housing units
58.8%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Castine housing costs

Median housing costs per month
$1,700/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.

Education in Castine

Castine education at a glance

About 10.9% of the population in Castine went to high school, while 55.3% pursued college studies. Another 1% earned an associate degree and 11.3% hold a bachelor’s. Meanwhile, 21.5% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
High school diploma 101 10.9% 80.4%
College diploma 513 55.3% 4.5%
Associate degree 9 1% -67.9%
Bachelor's degree 105 11.3% 14.1%
Graduate degree 199 21.5% 8.7%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Castine

How much people earn in Castine

The average annual household income in Castine was $175,971 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +20.8% change from the previous year. At the same time, the median income stood at $168,516, reflecting a +17.6% shift over the same period.

Average household income in Castine
$175,971/year
20.8% year-over-year change
Median household income in Castine
$168,516/year
17.6% year-over-year change

Castine income by age

Those with someone between 45 and 64 in charge, often well established professionally, earn $192,031 overall. Overall, 99.3% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
45 - 64 $192,031 32.7%
Over 65 $168,438 48.2%
Above poverty level
416
Below poverty level
3
Value Percent YoY
change
Above poverty level 416 99.3% 4.8%
Below poverty level 3 0.7% 0.0%

Average renter income in Castine

To get a better sense of what renters earn on average in Castine, their median household income was $186,250 according to 2022 Census data.

Renter median household income
$186,250
Rent-to-income ratio
0%
Understanding the rent-to-income ratio can help renters gauge if local housing costs align with their earnings. A ratio under 30% usually signals affordability, while exceeding this mark means rent is taking a larger-than-recommended bite out of income. That could make it harder for you to cover other costs like transportation, healthcare, or child care.

Employment in Castine

Workforce and job types in Castine

The job market in Castine is powered by 460 working residents, spread across a range of industries and roles. 78% of the working population are employed in professional or administrative positions, while 22% are in hands-on or service-based jobs. Also, 1.7% run their own businesses, 61.7% are employed by private companies, and 13% work in the public sector.

Workforce demographics

Working population
460
3.1% year-over-year change
White collar
359
Blue collar
101
Value Percent YoY change
White collar 359 78% -3.8%
Blue collar 101 22% 38.4%
Employer type
Self employees
1.7%
Private companies
61.7%
Governmental workers
13%
Not for profit companies
23.5%
Value Percent YoY change
Self employees 8 1.7% 60.0%
Private companies 284 61.7% 24.0%
Governmental workers 60 13% -6.2%
Not for profit companies 108 23.5% -27.0%
Unemployment rate
3.6%
70.0% year-over-year change

Available workforce

The unemployment rate in Castine stands at 3.6%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Castine

How people get around in Castine

In Castine, the average commute time is 14 minutes. Commuting methods vary: 43.8% of residents travel by personal vehicle and 42% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
14 min
14.6% year-over-year change
Means of transportation
Value Percent YoY change
Car 191 43.8% 29.9%
Walk 183 42% -16.1%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Castine by zipcode?

Zipcode Population Number of households Median income Average income
04421 1,362 352 $113,750 $131,597

Explore more communities

FAQs about Castine demographics 

What is the total population of Castine?

Castine has a total population of 996 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +7.6% compared to a year ago.

What is the gender ratio in Castine?

The gender ratio in Castine is as follows:
  • 66% males (657 residents)
  • 34% females (339 residents)

What is the median age in Castine?

The median age in Castine is 20.4.

What is the age distribution of the population in Castine?

The age distribution in Castine is as follows:
  • Under 15: 2.8% (28 residents)
  • Ages 15-24: 62.6% (623 residents)
  • Ages 25-44: 3.5% (35 residents)
  • Ages 45-64: 11% (110 residents)
  • Over 65: 20.1% (200 residents)

What is the racial and ethnic makeup of Castine?

The racial and ethnic makeup of Castine is as follows:
  • White: 86.4% (860 residents)
  • Black or African American: 4% (40 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0% (0 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 8.1% (81 residents)
  • Other: 1.5% (15 residents)

What percentage of the population in Castine are U.S.-born citizens?

U.S.-born citizens represent 90.9% of the population in Castine.

How many housing units are there in Castine?

There are 444 housing units in Castine, reflecting a -2.6% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Castine and what is the average household size?

Castine has a total of 183 households, with an average of 2 people in each.

What is the median household income in Castine?

Castine has a median household income of $168,516, representing a +17.6% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Castine?

The employment rate is 96.4% in Castine, with a workforce of 460 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 78% (359 residents)
  • Blue-collar workers: 22% (101 residents)

Places of employment:
  • Self-employed: 1.7% (8 residents)
  • Private companies: 61.7% (284 residents)
  • Governmental workers: 13% (60 residents)
  • Not-for-profit companies: 23.5% (108 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025