Union, ME

Town in ME, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

2,663

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

41.6

years ∙ half population younger than 41.6, half older

Diversity Index

10.2%

chance two random people differ in race and ethnicity

Nativity

0.9%

foreign-born population

99.1%Native

0.9% Foreign-born

Geographic Context

Location, size, and surroundings

About

Union is a town in Knox County, Maine, United States.

Location

Town in ME, US

Co-ordinates

DEC44.229426° N, 69.287119° W

DMS44° 13′ 45.93″ N, 69° 17′ 13.63″ W

Population Density & area

82.7/sq mi (31.97/km²)

Total Area

34.5 sq mi (89.4 km²)

Land Area

32.2 sq mi (83.3 km²) · 93.2%

Water Area

2.3 sq mi (6.1 km²) · 6.8%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

50.7% male

Male 50.7%

Female 49.3%

males per 100 females

Union 102.8

Maine 97.2

United States 98

Nativity

0.9%

foreign-born population

99.1%Native

0.9% Foreign-born

% Foreign-born

Union 0.9%

Maine 4.1%

United States 14.1%

Age Distribution

How the population is spread across age groups

Median Age

41.6

years ∙ half population younger than 41.6, half older

Union

41.6

Maine

44.8

United States

38.9

Dependency ratio

86.2

dependents per 100 working-age adults

Union 86.2

Maine 67.8

United States 64.4

AGE DISTRIBUTION

Distribution of age group

Median age

	Union	Maine	United States
Age Group
Children (Under 18)	24.9%	18.1%	22%
Working age (18-64)	53.7%	59.5%	60.8%
Senior (65+)	21.4%	22.4%	17.2%
Dependency ratio
Total dependency ratio	86.2	67.8	64.4
Child dependency ratio	46.4	30.3	36.1
Old-age dependency ratio	39.8	37.5	28.3

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

94.7%

Black

Asian

Hispanic

Other

5.3%

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

10.2%

chance two random people differ in race and ethnicity

Union 10.2%

Maine 18.9%

United States 61.4%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Union population

	Union	Maine	United States
Hispanic or Latino	0%	2.2%	19.3%
Mexican	0%	0.7%	11.3%
Puerto Rican	0%	0.5%	1.8%
Cuban	0%	0.1%	0.8%
Other Hispanic / Latino	0%	0.9%	5.5%
Not Hispanic or Latino	100%	97.8%	80.7%
One race	96.4%	93.6%	76.4%
White	94.7%	89.9%	57.4%
Black or African American	0%	1.8%	11.9%
American Indian and Alaska Native	0.5%	0.3%	0.5%
Asian	0%	1.1%	5.9%
Native Hawaiian and Other Pacific Islander	0%	0%	0.2%
Some Other Race	1.2%	0.4%	0.6%
Two or more races (Multiracial)	3.6%	4.2%	4.3%

Household & Families Composition

Household size, type, and family structure

Household structure

67.7% family

Family 67.7%

Non family 32.3%

% family households

Union 67.7%

Maine 60.7%

United States 64.2%

Average household size

2.49

persons per household

Union

2.49

Maine

2.26

United States

2.53

Household & Family COMPOSITION

Households

Percentage of Union population

	Union	Maine	United States
Total households	1,060	597,159	129,227,496
Average houshold size	2.49	2.26	2.53
Family households	718	362,538	82,990,528
Average family size	2.98	2.81	3.14
Married couple family	635	286,766	60,637,388
Other families	83	75,772	22,353,140
Male householder	10	24,355	6,572,819
Female householder	73	51,417	15,780,321
Non-family households	342	234,621	46,236,968
One-person households	168	183,618	37,140,836
Male householder	56	79,882	16,871,444
Senior (65+) living alone	48	29,811	5,225,110
Female householder	112	103,736	20,269,392
Senior (65+) living alone	84	56,986	10,089,070
Other living arrangements	174	51,003	9,096,132

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

1,299

housing units

Union 1,299

Maine 751,876

United States 143,775,355

Occupancy status

81.6% occupied

Occupied 81.6%

Vacant 18.4%

vacancy rate

Union 18.4%

Maine 20.6%

United States 10.1%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

84.1%

Single family houses

84.1%

Apartments in multi-unit structures

4.3%

Mobile homes

11.6%

Boat, RV, van, etc

Median Year Built

1984

Half of houses were built before 1984, and half after.

Historic ∙ 1939 or earlier

32.9%

Postwar & mid-century ∙ 1940 - 1969

4.6%

Late 20th century ∙ 1970 - 1999

39.2%

Modern ∙ 2000 or later

23.2%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Union	Maine	United States
Rooms per unit
Median rooms	6.1	5.5	5.5
1–3 rooms	8.3%	14.4%	15.1%
4–6 rooms	49.7%	53.6%	51.6%
7+ rooms	41.8%	32%	33.4%
Bedrooms
No bedroom / studio	2.5%	2.5%	2.9%
1 bedroom	4.6%	11.7%	10.9%
2 bedrooms	27.5%	29.1%	25%
3 bedrooms	45.9%	38.9%	38.7%
4+ bedrooms	19.5%	17.9%	22.4%
At a glance
Median year built	1984	1977	1981
Total housing units	1,299	751,876	143,775,355

Occupancy Profile

Who is inside and how they use it

Homeownership

85.9% owners

Renter-occupied 14.1%

Owner-occupied 85.9%

homeownership rate

Union 85.9%

Maine 74.3%

United States 65.2%

Average household size

2.52

Owner-occupied

2.3

Renter-occupied

owner-occupied average size

Union 2.52

Maine 2.37

United States 2.64

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Union	Maine	United States
Total occupied units	1,060	597,159	129,227,496
Year moved in
2020 or later	18.4%	20.4%	24.8%
2010 to 2019	43.3%	38.5%	39.6%
2000 to 2009	13.9%	17.9%	16.4%
1999 or earlier	24.4%	23.2%	19.1%
Occupants per room
1.00 or fewer	98.8%	98.6%	96.6%
1.01 to 1.50	0%	0.8%	2.2%
1.51 or more	1.2%	0.6%	1.2%
Vehicles availability
No vehicles	2.1%	6.8%	8.4%
1 vehicle	18.8%	33.6%	33.1%
2 vehicles	55.5%	39.9%	36.6%
3 or more vehicles	23.7%	19.8%	21.9%
House heating fuel used
Gas	15.7%	22.1%	51.4%
Electricity	8.9%	11.2%	41.3%
Solar	1.3%	0.4%	0.3%
Fuel oil, kerosene etc	63%	55.3%	3.9%
All other fuels	11.1%	10.6%	2%
No fuel used	0%	0.4%	1.2%
Selected characteristics
Lacking complete plumbing	0%	0.5%	0.4%
Lacking complete kitchen	0%	0.9%	0.8%
No telephone service available	0%	0.7%	0.9%

Housing Value

What owner-occupied units are worth

Median home value

$267,600

owner-occupied units

Median value(USD)

Union

$267,600

Maine

$296,600

United States

$332,700

Housing Cost Burden

31.1%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

31.1%

Owners without a mortgage

13.1%

Renters

24.6%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Union	Maine	United States
Property value
Median Value	$267,600	$296,600	$332,700
Under $100,000	12.5%	12.3%	11.4%
$100,000 - $200,000	11.2%	17.7%	15.8%
$200,000 - $300,000	33%	20.6%	17.8%
$300,000 - $500,000	28.1%	29.5%	26.9%
$500,000 - $1,000,000	15.1%	16.5%	20.9%
$1,000,000 and more	0%	3.3%	7.1%
Owner-occupied households
With a mortgage	55%	57.7%	60.6%
Without a mortgage	45%	42.3%	39.4%
Median monthly owner costs
With a mortgage	$1,696	$1,729	$1,963
Without a mortgage	$707	$638	$638
Gross rent
Median rent	$1,179	$1,139	$1,413

Education Profile

How educated is the community and how education pays off

Adults with a college degree

34.4%

of adults 25+ with a bachelor's degree or higher

Union 34.4%

Maine 36.2%

United States 35.7%

Adults without a high school diploma

2.6%

of adults (25+) without a high school diploma

Union 2.6%

Maine 5.2%

United States 10.4%

School Enrollment

Who is enrolled in school and at what level

School enrollment

463

population (age 3+) enrolled in school

Nursery / Preschool

K–12

76.9%

College / Undergraduate

14.3%

Graduate / Professional

5.8%

College-going rate (18-24 yr olds)

47.9%

of 18-24-year-olds in college or graduate school

Union

47.9%

Maine

43.5%

United States

40.9%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Union	Maine	United States
Total enrolled (age 3+)	463	281,216	80,089,790
Nursery / preschool	3%	5%	5.7%
K–12	76.9%	66.2%	67.6%
Kindergarten	8.2%	5.1%	5%
Elementary: Grades 1–4	17.9%	19.6%	19.8%
Elementary: Grades 5–8	21.8%	19.8%	21%
High School: Grades 9–12	28.9%	21.8%	21.7%
College or graduate school	20.1%	28.7%	26.7%
College, undergraduate	14.3%	23.1%	21%
Graduate, professional school	5.8%	5.7%	5.8%
College-going rate · 18-24 yr olds	47.9%	43.5%	40.9%
School type
Public school	59.6%	79.4%	82%
Private school	40.4%	20.6%	18%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

1,926

population 25 years and over

Total adults (25+)

Less than 9th grade

9th-12th, no diploma

1.6%

HS graduate

31.2%

Some college no degree

16.6%

Associates degree

15.3%

Bachelors degree

24.8%

Graduate or professional degree

9.6%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

100% · 0%

9th-12th, no diploma

53.3% · 46.7%

HS graduate

55.2% · 44.8%

Some college no degree

63.3% · 36.7%

Associates degree

40.3% · 59.7%

Bachelors degree

39.3% · 60.7%

Graduate or professional degree

44.6% · 55.4%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Union	Maine	United States
Population (25+)	1,926	1,026,250	230,807,303
Less than 9th grade	1%	1.7%	4.7%
9th–12th, no diploma	1.6%	3.5%	5.7%
High school diploma or GED	31.2%	30.1%	26%
Some college, no degree	16.6%	18.1%	19.1%
Associate's degree	15.3%	10.4%	8.8%
Bachelor's degree or higher	34.4%	36.2%	35.7%
Bachelor's degree	24.8%	22.5%	21.6%
Graduate or professional	9.6%	13.7%	14.1%
High School or higher	97.5%	94.8%	89.6%

Earnings by education level

percentage as applicable

Median Earnings

$42,015

Median earnings for adults 25+, by level

Less than HS graduate

$38,889

HS graduate

$37,727

Some college or associates

$41,042

Bachelors degree

$50,824

Graduate or professional degree

$84,375

Poverty Rate

8.8%

for ages 25+, with bachelors degree or higher

Less than HS graduate

HS graduate

5.4%

Some college or associates

11.1%

Bachelors degree or higher

8.8%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Union	Maine	United States
Median earnings
Population 25+, with earnings	$42,015	$50,103	$52,696
Less than high school graduate	$38,889	$35,887	$32,485
High school graduate (includes equivalency)	$37,727	$40,775	$40,153
Some college or associate's degree	$41,042	$46,697	$47,260
Bachelor's degree	$50,824	$59,190	$70,044
Graduate or professional degree	$84,375	$75,851	$90,720
Poverty rates
Less than high school graduate	0%	27.2%	24.2%
High school graduate (includes equivalency)	5.4%	13.9%	14.4%
Some college or associate's degree	11.1%	8.8%	9.8%
Bachelor's degree or higher	8.8%	4.5%	4.5%

Insights for Union, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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