04579 ZIP Code — Woolwich, ME

Sagadahoc County, Maine

ZIP code 04579 is located in Woolwich, Maine, within Sagadahoc County. It covers approximately 35.06 square miles and serves a population of 3,112 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 207.

About ZIP code 04579

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $220,700. Owner-occupancy is high at 91%, well above the national average.

Median household income is $92,596. 41% 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 high — 50% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Notable community characteristics include a notable veteran presence at 17% of civilians, above the national average of 7%.

Overall, ZIP code 04579 reflects a community defined by a strong veteran community, high homeownership, and a significant Social Security-dependent population.

3,112

population

35.06

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

04579 ZIP code map

Cities in ZIP code 04579

Below are the cities the US Postal Service accepts for ZIP code 04579. Using any city not on this list may result in mail delivery delays.

City	Status
Woolwich	Preferred

Nearby ZIP codes

04578 Wiscasset (4.7 mi) 04571 Trevett (5.9 mi) 04530 Bath (6.1 mi) 04008 Bowdoinham (7.2 mi) 04549 Isle Of Springs (7.8 mi) 04556 Edgecomb (8.1 mi) 04537 Boothbay (8.2 mi) 04342 Dresden (8.6 mi) 04086 Topsham (9.4 mi) 04548 Georgetown (9.9 mi) 04538 Boothbay Harbor (10.4 mi) 04573 Walpole (10.6 mi)

Demographics updated 05/2026

Population
Total population	3,112
Population density	89 / sq mi
State FIPS	23
County FIPS	023

Geography
Land area	35.06 sq mi
Water area	6.54 sq mi
Latitude	43.9545
Longitude	-69.7712
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	38.7%	36.9%	42.3%
$50k – $100k	30.9%	36.7%	32.3%
$100k – $200k	26.4%	23.2%	20.6%
Over $200k	4.0%	3.2%	4.9%

Demographics & statistics

3,112

Population

People per sq mi

52.7

Median age

$92,596

Median household income

$45,200

Per capita income

$220,700

Median home value

$1,363

Median monthly rent

90.7%

Home ownership

13.8%

Poverty rate

2.8%

Unemployment

1,315

Housing units

49.7%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

212

25–34

208

121

35–44

119

168

45–54

166

142

55–59

140

60–64

265

65–74

260

75–84

200

85+

196

← Male

Female →

Age summary

Group	Count	%
Under 18	474	15.2%
18 and over	2,638	84.8%
65 and over	1,049	33.7%
Median age	52.7 years

Race & ethnicity

White 91.6%

Two or more races 6.1%

Hispanic or Latino 1.2%

Asian 0.7%

Black or African American 0.3%

Group	Count	%
White	2,887	91.6%
Two or more races	192	6.1%
Hispanic or Latino	39	1.2%
Asian	22	0.7%
Black or African American	11	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	38.7%	36.9%	42.3%
$50k – $100k	30.9%	36.7%	32.3%
$100k – $200k	26.4%	23.2%	20.6%
Over $200k	4.0%	3.2%	4.9%

$10k–$15k 14.2%

$15k–$25k 1.4%

$25k–$35k 3.3%

$35k–$50k 6.4%

$50k–$75k 17.4%

$75k–$100k 11.4%

$100k–$150k 30.0%

$150k–$200k 8.3%

$200k+ 7.6%

Range	% of households
$10k–$15k	14.2%
$15k–$25k	1.4%
$25k–$35k	3.3%
$35k–$50k	6.4%
$50k–$75k	17.4%
$75k–$100k	11.4%
$100k–$150k	30.0%
$150k–$200k	8.3%
$200k+	7.6%
Median income	$92,596

Housing

Home values

Under $50k 1.6%

$50k–$100k 15.8%

$100k–$150k 18.3%

$150k–$200k 11.7%

$200k–$300k 20.6%

$300k–$500k 24.0%

$500k–$1M 4.3%

$1M+ 3.7%

Housing overview

Metric	Value
Median home value	$220,700
Median rent / month	$1,363
Owner occupied	90.7%
Renter occupied	9.3%
Vacant	14.8%
Single-family detached	88.2%
Large apartment buildings	0.0%
Mobile homes	10.5%
Median rooms	5.3
Avg household size (owned)	2.56

Year built

Era	%
2020 or later	0.3%
2010–2019	9.5%
2000–2009	13.1%
1990–1999	10.2%
1980–1989	11.9%
1970–1979	16.5%
1960–1969	8.0%
1950–1959	3.1%
1940–1949	3.2%
1939 or earlier	24.2%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	9.8%
2 bedrooms	30.0%
3 bedrooms	47.3%
4 bedrooms	11.0%
5+ bedrooms	1.9%

Vehicles per household

Vehicles	% of households
No vehicle	6.0%
1 vehicle	29.9%
2 vehicles	31.9%
3 or more	32.2%

Heating fuel

Fuel type	%
Electricity	5.3%
Propane / LP gas	13.8%
Fuel oil	53.9%
Wood	23.0%

Households & families

Household type	Count	%
Married-couple family	862	70.8%
Cohabiting couple	130	10.7%
Male householder, no spouse	82	6.7%
Female householder, no spouse	143	11.8%
Households with children under 18	332	27.3%
Households with seniors (65+)	590	48.5%
Average household size	2.55

Marital status

Status	Male	Female
Never married	25.4%	21.0%
Married	67.1%	68.1%
Separated	0.8%	0.0%
Widowed	1.2%	2.2%
Divorced	5.5%	8.8%

Education

Less than 9th grade 1.7%

Some HS, no diploma 4.3%

HS graduate 23.5%

Some college, no degree 14.0%

Associate's degree 6.8%

Bachelor's degree 27.3%

Graduate / professional 22.5%

Metric	%
HS diploma or higher	94.0%
Bachelor's or higher	49.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	23	4.1%
Kindergarten	0	0.0%
Elementary school	190	34.0%
High school	163	29.2%
College / grad school	183	32.7%

Employment

Industry of employment

Education & healthcare 18.9%

Retail trade 13.7%

Construction 12.6%

Manufacturing 12.4%

Finance & real estate 11.8%

Public administration 7.7%

Transportation & utilities 6.2%

Arts, food & hospitality 5.6%

Wholesale trade 4.1%

Other services 3.6%

Professional & management 2.6%

Information 0.9%

Occupation

Category	%
Management, business & arts	39.3%
Service	12.8%
Sales & office	22.0%
Natural resources & construction	14.4%
Production & transportation	11.4%

Employment type

Type	%
Private sector	71.1%
Government	14.3%
Self-employed	14.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	87.5%
Carpool	1.3%
Public transit	0.0%
Walk	1.6%
Work from home	8.4%
Other means	1.2%
Avg commute (minutes)	25.9

Poverty

All people 13.8%

Under 18 years 1.7%

18 and over 16.0%

Married-couple families 19.3%

Female-led households 12.4%

Income support

Source	% of households
Social Security	41.2%
Retirement income	39.1%
Supplemental Security	4.7%
Cash public assistance	0.0%
Food stamps / SNAP	0.4%

Health indicators

Condition	%
Obesity	31.8%
High blood pressure	32.9%
High cholesterol	33.1%
Diabetes	9.0%
Heart disease	6.4%
Stroke	2.7%
Asthma	10.4%
Arthritis	25.8%
Kidney disease	2.7%
Pulmonary disease	7.4%
Cancer	7.3%

Behavior / access	%
Smoking	16.8%
Binge drinking	15.6%
No physical activity	17.7%
Less than 7 hrs sleep	32.4%
Depression	23.1%
Fair or poor health	11.1%
Poor mental health	12.9%
Poor physical health	8.8%
No health insurance	11.2%
Visited doctor (checkup)	77.8%
Visited dentist	69.4%
Cholesterol screening	91.0%
Teeth loss	12.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	437	16.7%

Disability	%
Any disability	21.0%
Under 18	9.7%
18–64 years	6.0%
65 and over	48.4%

Health insurance coverage

Type	%
Private insurance	83.8%
Public insurance	45.0%
No insurance	3.0%
Uninsured under 19	2.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,986	96.0%
Spanish	4	0.1%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	4	0.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,023	97.1%
Born in same state	2,954	94.9%
Born in different state	2,121	68.2%
Foreign born	69	2.2%
Naturalized citizen	89	2.9%
Not a US citizen	62	69.7%

Ancestry

Ancestry	Count	%
French	923	29.7%
Italian	288	9.3%
German	112	3.6%
Norwegian	70	2.2%

Ancestry	Count	%
Polish	51	1.6%
Arab	41	1.3%
English	17	0.5%
Irish	14	0.4%

Technology access

Metric	% of households
Computer access	39.1%
Internet access	95.3%

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

Frequently asked questions about ZIP code 04579

What city is ZIP code 04579 in?

ZIP code 04579 is primarily assigned to Woolwich, Maine.

What county is ZIP code 04579 in?

ZIP code 04579 falls within Sagadahoc County, Maine.

Does ZIP code 04579 have an older population?

34% of residents in ZIP code 04579 are 65 or older, above the national average of ~17%.

Is ZIP code 04579 mostly owner-occupied?

91% of occupied units in ZIP code 04579 are owner-occupied, well above the national average.

How educated is the population of ZIP code 04579?

50% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 04579 have a large veteran population?

17% of civilians in ZIP code 04579 are veterans, above the national average of ~7%.

What timezone is ZIP code 04579 in?

ZIP code 04579 observes the EST timezone.