04345 ZIP Code — Gardiner, ME

Kennebec County, Maine

ZIP code 04345 is located in Gardiner, Maine, within Kennebec County. It covers approximately 71.74 square miles and serves a population of 12,282 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 207.

About ZIP code 04345

The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $182,100. Owner-occupancy is high at 77%, well above the national average.

Median household income is $70,194. 35% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 26 minutes is near the national average.

Educational attainment is near the national average, with 27% of residents holding a bachelor's degree or higher.

Health indicators show elevated rates of smoking (20%) compared to national benchmarks.

Notable community characteristics include a notable veteran presence at 11% of civilians, above the national average of 7%.

Overall, ZIP code 04345 reflects a community defined by a strong veteran community, high homeownership, and a significant Social Security-dependent population.

12,282

population

71.74

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

04345 ZIP code map

Cities in ZIP code 04345

Below are the cities the US Postal Service accepts for ZIP code 04345. Using any city not on this list may result in mail delivery delays.

City	Status
Gardiner	Acceptable
Gardiner	Preferred

Nearby ZIP codes

04357 Richmond (5.2 mi) 04347 Hallowell (6.4 mi) 04350 Litchfield (7.1 mi) 04333 Augusta (7.7 mi) 04336 Augusta (8 mi) 04342 Dresden (8.8 mi) 04353 Whitefield (9.7 mi) 04351 Manchester (9.8 mi) 04259 Monmouth (10.3 mi) 04364 Winthrop (11.3 mi) 04535 Alna (11.4 mi) 04008 Bowdoinham (11.4 mi)

Demographics updated 05/2026

Population
Total population	12,282
Population density	171 / sq mi
State FIPS	23
County FIPS	011

Geography
Land area	71.74 sq mi
Water area	4.59 sq mi
Latitude	44.1965
Longitude	-69.8019
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	41.0%	45.7%	42.3%
$50k – $100k	33.9%	32.0%	32.3%
$100k – $200k	19.5%	18.4%	20.6%
Over $200k	5.6%	3.8%	4.9%

Demographics & statistics

12,282

Population

171

People per sq mi

43.9

Median age

$70,194

Median household income

$37,385

Per capita income

$182,100

Median home value

$922

Median monthly rent

76.7%

Home ownership

9.3%

Poverty rate

5.0%

Unemployment

4,364

Housing units

26.6%

Bachelor's or higher

Age distribution

Male Female

206

Under 5

218

352

5–9

371

255

10–14

269

369

15–19

389

543

20–24

573

525

25–34

554

819

35–44

864

955

45–54

1,008

422

55–59

446

353

60–64

373

731

65–74

771

318

75–84

335

128

85+

135

← Male

Female →

Age summary

Group	Count	%
Under 18	2,219	18.1%
18 and over	10,063	81.9%
65 and over	2,418	19.7%
Median age	43.9 years

Race & ethnicity

White 87.2%

Two or more races 5.3%

Hispanic or Latino 5.3%

Other race 1.1%

Asian 0.9%

American Indian / Alaska Native 0.1%

Group	Count	%
White	11,317	87.2%
Two or more races	694	5.3%
Hispanic or Latino	692	5.3%
Other race	141	1.1%
Asian	114	0.9%
American Indian / Alaska Native	13	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	41.0%	45.7%	42.3%
$50k – $100k	33.9%	32.0%	32.3%
$100k – $200k	19.5%	18.4%	20.6%
Over $200k	5.6%	3.8%	4.9%

Under $10k 4.5%

$10k–$15k 5.5%

$15k–$25k 7.9%

$25k–$35k 7.8%

$35k–$50k 10.4%

$50k–$75k 17.2%

$75k–$100k 13.1%

$100k–$150k 19.2%

$150k–$200k 9.3%

$200k+ 5.1%

Range	% of households
Under $10k	4.5%
$10k–$15k	5.5%
$15k–$25k	7.9%
$25k–$35k	7.8%
$35k–$50k	10.4%
$50k–$75k	17.2%
$75k–$100k	13.1%
$100k–$150k	19.2%
$150k–$200k	9.3%
$200k+	5.1%
Median income	$70,194

Housing

Home values

Under $50k 7.5%

$50k–$100k 10.6%

$100k–$150k 21.0%

$150k–$200k 17.6%

$200k–$300k 28.5%

$300k–$500k 11.3%

$500k–$1M 3.4%

Housing overview

Metric	Value
Median home value	$182,100
Median rent / month	$922
Owner occupied	76.7%
Renter occupied	23.3%
Vacant	10.4%
Single-family detached	64.8%
Large apartment buildings	0.9%
Mobile homes	13.1%
Median rooms	5.4
Avg household size (owned)	2.57

Year built

Era	%
2020 or later	0.0%
2010–2019	7.0%
2000–2009	8.0%
1990–1999	11.0%
1980–1989	10.5%
1970–1979	13.8%
1960–1969	6.3%
1950–1959	7.9%
1940–1949	4.0%
1939 or earlier	31.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.7%
1 bedroom	11.4%
2 bedrooms	32.1%
3 bedrooms	37.1%
4 bedrooms	13.2%
5+ bedrooms	5.4%

Vehicles per household

Vehicles	% of households
No vehicle	8.3%
1 vehicle	28.8%
2 vehicles	39.6%
3 or more	23.3%

Heating fuel

Fuel type	%
Utility gas	6.9%
Electricity	7.6%
Propane / LP gas	8.3%
Fuel oil	66.7%
Wood	6.9%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	2,557	51.8%
Cohabiting couple	412	8.3%
Male householder, no spouse	706	14.3%
Female householder, no spouse	1,263	25.6%
Households with children under 18	1,230	24.9%
Households with seniors (65+)	1,653	33.5%
Average household size	2.47

Marital status

Status	Male	Female
Never married	33.1%	28.6%
Married	53.9%	51.4%
Separated	0.5%	0.5%
Widowed	2.2%	7.8%
Divorced	10.3%	11.7%

Education

Less than 9th grade 2.2%

Some HS, no diploma 2.2%

HS graduate 38.7%

Some college, no degree 21.2%

Associate's degree 9.2%

Bachelor's degree 18.4%

Graduate / professional 8.1%

Metric	%
HS diploma or higher	95.6%
Bachelor's or higher	26.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	78	2.9%
Kindergarten	244	9.1%
Elementary school	767	28.7%
High school	1,013	37.9%
College / grad school	568	21.3%

Employment

Industry of employment

Education & healthcare 28.0%

Retail trade 17.1%

Public administration 9.9%

Construction 8.9%

Professional & management 7.4%

Manufacturing 7.0%

Other services 5.4%

Arts, food & hospitality 4.8%

Finance & real estate 3.8%

Wholesale trade 3.4%

Transportation & utilities 3.1%

Agriculture & mining 1.0%

Information 0.3%

Occupation

Category	%
Management, business & arts	38.0%
Service	14.1%
Sales & office	23.1%
Natural resources & construction	12.3%
Production & transportation	12.5%

Employment type

Type	%
Private sector	73.3%
Government	20.4%
Self-employed	6.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	82.4%
Carpool	6.5%
Public transit	0.3%
Walk	1.8%
Work from home	8.3%
Other means	0.7%
Avg commute (minutes)	26.0

Poverty

All people 9.3%

Under 18 years 10.7%

18 and over 9.0%

Married-couple families 3.9%

Female-led households 18.7%

Income support

Source	% of households
Social Security	34.9%
Retirement income	28.4%
Supplemental Security	4.8%
Cash public assistance	3.2%
Food stamps / SNAP	9.7%

Health indicators

Condition	%
Obesity	35.6%
High blood pressure	33.1%
High cholesterol	32.6%
Diabetes	10.5%
Heart disease	7.3%
Stroke	3.2%
Asthma	11.2%
Arthritis	27.9%
Kidney disease	3.0%
Pulmonary disease	9.0%
Cancer	6.9%

Behavior / access	%
Smoking	20.1%
Binge drinking	15.8%
No physical activity	22.7%
Less than 7 hrs sleep	30.1%
Depression	23.8%
Fair or poor health	13.8%
Poor mental health	14.6%
Poor physical health	10.7%
No health insurance	12.7%
Visited doctor (checkup)	79.1%
Visited dentist	65.3%
Cholesterol screening	88.6%
Teeth loss	18.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,152	11.4%

Disability	%
Any disability	16.8%
Under 18	8.4%
18–64 years	15.3%
65 and over	29.6%

Health insurance coverage

Type	%
Private insurance	71.3%
Public insurance	36.7%
No insurance	6.1%
Uninsured under 19	4.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	11,858	96.5%
Spanish	281	2.4%
Other Indo-European	180	1.5%
Asian & Pacific Islander	72	0.6%
Other languages	29	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	11,951	97.3%
Born in same state	11,900	96.9%
Born in different state	9,135	74.4%
Foreign born	51	0.4%
Naturalized citizen	331	2.7%
Not a US citizen	198	59.8%

Ancestry

Ancestry	Count	%
French	2,846	23.2%
Italian	1,804	14.7%
Arab	1,202	9.8%
German	433	3.5%
Norwegian	105	0.9%

Ancestry	Count	%
English	80	0.7%
Dutch	77	0.6%
Irish	49	0.4%
Polish	37	0.3%

Technology access

Metric	% of households
Computer access	40.2%
Internet access	94.3%

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

Frequently asked questions about ZIP code 04345

What city is ZIP code 04345 in?

ZIP code 04345 is primarily assigned to Gardiner, Maine.

What county is ZIP code 04345 in?

ZIP code 04345 falls within Kennebec County, Maine.

Does ZIP code 04345 have a large veteran population?

11% of civilians in ZIP code 04345 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 04345?

The median home value in ZIP code 04345 is $182,100.

What is the population of ZIP code 04345?

ZIP code 04345 has an estimated population of 12,282 residents, with a density of 171 people per square mile.

What is the median household income in ZIP code 04345?

The median household income in ZIP code 04345 is $70,194, below the national median of ~$75,000.

What timezone is ZIP code 04345 in?

ZIP code 04345 observes the EST timezone.