Union ZIP Codes — Knox County, ME

There is one unique ZIP code in Union, Maine and it is 04862. Area code: 207.

ZIP codes

64.86

sq mi land

3.06

sq mi water

207

area code

Union, ME ZIP code map

About Union, ME

Union, Maine, is a quaint town located in the picturesque Knox County. Nestled in the scenic region of Midcoast Maine, this community is known for its rich agricultural history and serene landscapes. With a ZIP code of 04862, Union attracts both residents and visitors who appreciate its rural charm and natural beauty.

Location & geography

Situated about 23 miles southwest of Augusta and approximately 16 miles from the coastal town of Rockland, Union is surrounded by beautiful terrain. The town spans a total land area of 64.86 square miles, complemented by a water area of 3.06 square miles, providing a scenic backdrop of lakes and streams. The region is characterized by rolling hills and lush forests, offering residents and visitors an abundance of outdoor recreational opportunities.

Community & economy

The community in Union embodies a friendly small-town atmosphere, where residents often gather for local events and fairs. The local economy is supported by agriculture and small businesses, reflecting the town's heritage and commitment to sustaining its rural character. Daily life in Union is often centered around family, community gatherings, and the great outdoors, fostering a strong sense of belonging.

Transportation

Union is accessible via several routes, with Maine Route 17 and Route 131 traversing the area and connecting it to nearby towns. The nearest major airport is Knox County Regional Airport, located about 12 miles to the southwest in Owls Head. Public transportation options may be limited, but the town's roads are conducive for both local traffic and visitors.

History

Founded in the early 19th century, Union has a rich history tied to agriculture and the lumber industry. Key events in the town's past include the establishment of several sawmills and farms, which laid the groundwork for its economic development. Today, remnants of this history can be seen in the town's architecture and preserved buildings that reflect its rural heritage.

Did you know?

One surprising fact about Union is that it is home to the annual Union Fair, which showcases local agriculture, crafts, and entertainment, drawing visitors from across the region. Additionally, the town's beautiful Lake St. George is popular for fishing, boating, and swimming, making it a local gem for outdoor enthusiasts.

ZIP codes for Union, ME (1)

ZIP code	City	County	Map
04862	Union	Knox	View map

Demographics & statistics

4,130

Population

42.5

Median age

$62,500

Median household income

$30,382

Per capita income

$225,300

Median home value

$873

Median monthly rent

88.0%

Home ownership

13.9%

Poverty rate

4.2%

Unemployment

1,797

Housing units

32.5%

Bachelor's or higher

Age distribution

Male Female

163

Under 5

195

5–9

116

10–14

116

132

15–19

159

20–24

205

25–34

247

204

35–44

245

221

45–54

266

123

55–59

148

103

60–64

124

261

65–74

313

163

75–84

196

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,006	24.4%
18 and over	3,124	75.6%
65 and over	1,008	24.4%
Median age	42.5 years

Race & ethnicity

White 93.3%

Two or more races 4.7%

Hispanic or Latino 0.7%

American Indian / Alaska Native 0.6%

Black or African American 0.5%

Asian 0.1%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
White	3,882	93.3%
Two or more races	194	4.7%
Hispanic or Latino	29	0.7%
American Indian / Alaska Native	26	0.6%
Black or African American	20	0.5%
Asian	4	0.1%
Native Hawaiian / Pacific Islander	4	0.1%

Household income

Under $10k 8.9%

$10k–$15k 3.7%

$15k–$25k 5.8%

$25k–$35k 10.6%

$35k–$50k 15.3%

$50k–$75k 13.1%

$75k–$100k 15.5%

$100k–$150k 16.5%

$150k–$200k 7.5%

$200k+ 3.1%

Range	% of households
Under $10k	8.9%
$10k–$15k	3.7%
$15k–$25k	5.8%
$25k–$35k	10.6%
$35k–$50k	15.3%
$50k–$75k	13.1%
$75k–$100k	15.5%
$100k–$150k	16.5%
$150k–$200k	7.5%
$200k+	3.1%
Median income	$62,500

Housing

Home values

Under $50k 13.7%

$50k–$100k 3.8%

$100k–$150k 7.5%

$150k–$200k 14.3%

$200k–$300k 33.4%

$300k–$500k 19.3%

$500k–$1M 8.0%

Housing overview

Metric	Value
Median home value	$225,300
Median rent / month	$873
Owner occupied	88.0%
Renter occupied	12.0%
Vacant	16.4%
Single-family detached	83.3%
Large apartment buildings	0.0%
Mobile homes	10.3%
Median rooms	6.0
Avg household size (owned)	2.58

Year built

Era	%
2020 or later	0.0%
2010–2019	7.8%
2000–2009	18.1%
1990–1999	9.4%
1980–1989	17.6%
1970–1979	9.1%
1960–1969	4.0%
1950–1959	2.3%
1940–1949	0.2%
1939 or earlier	31.6%

Bedrooms

Size	% of units
No bedroom (studio)	1.6%
1 bedroom	4.3%
2 bedrooms	30.8%
3 bedrooms	41.9%
4 bedrooms	16.8%
5+ bedrooms	4.6%

Vehicles per household

Vehicles	% of households
No vehicle	8.7%
1 vehicle	24.0%
2 vehicles	46.1%
3 or more	21.3%

Heating fuel

Fuel type	%
Utility gas	0.4%
Electricity	2.9%
Propane / LP gas	10.5%
Fuel oil	70.3%
Wood	14.3%
Solar	0.8%

Households & families

Household type	Count	%
Married-couple family	835	50.0%
Cohabiting couple	201	12.0%
Male householder, no spouse	169	10.1%
Female householder, no spouse	465	27.8%
Households with children under 18	481	28.8%
Households with seniors (65+)	703	42.1%
Average household size	2.46

Marital status

Status	Male	Female
Never married	18.6%	22.5%
Married	58.0%	48.0%
Separated	0.0%	1.8%
Widowed	2.5%	10.6%
Divorced	20.9%	17.1%

Education

Less than 9th grade 0.5%

Some HS, no diploma 2.8%

HS graduate 33.6%

Some college, no degree 18.5%

Associate's degree 12.1%

Bachelor's degree 24.5%

Graduate / professional 8.0%

Metric	%
HS diploma or higher	96.7%
Bachelor's or higher	32.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	24	2.9%
Kindergarten	46	5.5%
Elementary school	329	39.4%
High school	278	33.3%
College / grad school	159	19.0%

Employment

Industry of employment

Education & healthcare 22.9%

Professional & management 14.3%

Manufacturing 12.0%

Retail trade 10.4%

Finance & real estate 9.4%

Other services 8.1%

Construction 7.9%

Public administration 4.5%

Arts, food & hospitality 3.8%

Transportation & utilities 2.6%

Agriculture & mining 1.9%

Information 1.8%

Wholesale trade 0.4%

Occupation

Category	%
Management, business & arts	33.7%
Service	16.8%
Sales & office	22.4%
Natural resources & construction	11.8%
Production & transportation	15.4%

Employment type

Type	%
Private sector	73.6%
Government	13.1%
Self-employed	13.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	73.6%
Carpool	7.9%
Public transit	0.0%
Walk	2.0%
Other means	0.0%
Avg commute (minutes)	33.9

Poverty

All people 13.9%

Under 18 years 14.2%

18 and over 13.9%

Married-couple families 2.0%

Female-led households 45.2%

Income support

Source	% of households
Social Security	51.9%
Retirement income	22.0%
Supplemental Security	7.0%
Cash public assistance	5.5%
Food stamps / SNAP	17.1%

Health indicators

Condition	%
High blood pressure	32.8%
High cholesterol	35.7%
Heart disease	6.8%
Stroke	3.0%
Asthma	10.3%
Arthritis	27.4%
Kidney disease	2.9%
Pulmonary disease	8.1%
Cancer	7.3%

Behavior / access	%
Binge drinking	16.0%
No physical activity	19.7%
Less than 7 hrs sleep	31.7%
Fair or poor health	12.3%
Poor mental health	13.8%
Poor physical health	9.7%
No health insurance	12.6%
Visited doctor (checkup)	77.1%
Visited dentist	69.5%
Cholesterol screening	90.2%
Teeth loss	15.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	350	11.2%

Disability	%
Any disability	16.1%
Under 18	10.6%
18–64 years	13.3%
65 and over	27.5%

Health insurance coverage

Type	%
Private insurance	61.4%
Public insurance	50.0%
Uninsured under 19	7.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,772	91.3%
Spanish	8	0.2%
Other Indo-European	4	0.1%
Asian & Pacific Islander	0	0.0%
Other languages	4	0.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,054	98.2%
Born in same state	4,018	97.3%
Born in different state	2,556	61.9%
Foreign born	36	0.9%
Naturalized citizen	76	1.8%
Not a US citizen	50	65.8%

Ancestry

Ancestry	Count	%
French	717	17.4%
Italian	500	12.1%
Arab	392	9.5%
Polish	125	3%
German	82	2%

Ancestry	Count	%
English	16	0.4%
Dutch	13	0.3%
Irish	11	0.3%
Norwegian	6	0.1%

Technology access

Metric	% of households
Computer access	40.4%
Internet access	90.5%

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

Frequently asked questions

What ZIP codes does Union, ME have?

Union, ME has one ZIP code: 04862. Each ZIP code serves a distinct delivery area within the city and surrounding region.