PlainZIP

Woolwich, ME · standard

ZIP Code 04579

Sagadahoc County, Maine - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

3,072
34/sq mi
$102,175
Median income
$254,500
Median home value
52.9%
Bachelor's or higher

The verdict

Woolwich pairs an upper-quartile household income with above-median home values, in a rural, homeowner-dominated area.

Top 18%
household income, US ZIPs
Top 42%
home value, US ZIPs
34
people per sq mi
96%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 04579 against every reporting US ZIP.

ZIP code 04579 covers 90.6 square miles in Woolwich, Sagadahoc County, Maine (a standard USPS delivery area), with a modest 3,072 residents on file, a density of 34 people per square mile, in the New York time zone.

ZIP 04579 lands in the middle-income range, with a median household income of $102,175 (39% above the Maine average), while per-capita income is $55,975. 13.3% of residents live below the poverty line, and the unemployment rate reads 1.8%. Housing costs here run $254,500 for a typical home value (10% below the state average), with rent averaging - a month; 95.5% of homes are owner-occupied.

This is a highly-educated ZIP: 52.9% of adults hold a bachelor's degree or higher, the median age is 55.8, and the average commute is 29 minutes. Beyond these figures, 10 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Sagadahoc County, letting you compare 04579 to its immediate surroundings rather than a national baseline alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 04579

Top 5 sectors by establishment count in Woolwich, ME

Which industries have the most business establishments in ZIP 04579.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 04579, Woolwich, ME · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

3,072

Population

90.6

Area (sq mi)

34

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 04579?

55.8

Median Age

50.7%

Male

49.3%

Female

2.6%

Foreign-Born

White 85.7%
African American 1.4%
Asian 0.1%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 12.9%
Hispanic or Latino 0.0%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$102,175

Median Household Income

+39% vs state

$55,975

Per Capita Income

13.3%

Poverty Rate

1.8%

Unemployment Rate

29.4 min

Mean Commute Time

How ZIP 04579 ranks nationally

Woolwich, ME household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$102,175 Top 18% higher than 82% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). This entry sits in this band. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 72.4%
Bachelor's Degree or Higher 52.9%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

1,430

Total Housing Units

1,295

Occupied Units

135

Vacant Units

2.43

Avg Household Size

Occupancy Type

Owner 95.5%
Renter 4.5%

$254,500

Median Home Value

-10% vs state

1982

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 69 business establishments in ZIP 04579, employing approximately 469 people with a combined annual payroll of $28,789,000.

69

Businesses

469

Employees

$28.8M

Annual Payroll

8

Industry Sectors

Industry Establishments % of Total
Construction 29 42.0%
Retail trade 12 17.4%
Professional, scientific, and technical services 5 7.3%
Real estate and rental and leasing 4 5.8%
Other services (except public administration) 4 5.8%
Wholesale trade 3 4.3%
Health care and social assistance 3 4.3%
Accommodation and food services 3 4.3%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 04579 vs 04578 →

ZIP 04579 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 04579 ranks #3 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 04579 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 04579 ranks #4 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
04578 Wiscasset, ME 4,450 4.0 mi
04530 Bath, ME 10,818 5.8 mi
04342 Dresden, ME 1,672 8.2 mi
04556 Edgecomb, ME 1,249 7.3 mi
04571 Trevett, ME 323 6.5 mi
04548 Georgetown, ME 1,042 10.2 mi
04008 Bowdoinham, ME 2,723 7.0 mi
04537 Boothbay, ME 2,073 8.5 mi
04575 West Boothbay Harbor, ME 85 9.2 mi
04576 Southport, ME 604 10.9 mi

More ZIP Codes in Sagadahoc County

04530 standard
Bath, ME
Pop: 10,818
04086 standard
Topsham, ME
Pop: 8,787
04357 standard
Richmond, ME
Pop: 3,399
04287 standard
Bowdoin, ME
Pop: 3,224
04008 standard
Bowdoinham, ME
Pop: 2,723
04562 standard
Phippsburg, ME
Pop: 2,216

Related Areas

Sagadahoc County Woolwich, ME Maine

Frequently Asked Questions

What county is ZIP code 04579 in? ▼
ZIP code 04579 (Woolwich) is located in Sagadahoc County, Maine. Sagadahoc County contains multiple ZIP codes, see the full list at /counties/sagadahoc-me.
What is the population of ZIP code 04579? ▼
ZIP code 04579 in Woolwich, ME has a population of 3,072 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 04579? ▼
The median household income in ZIP 04579 is $102,175, which is 34% above the national average of $76,288.
What is the average home value in ZIP 04579? ▼
The median home value in ZIP 04579 is $254,500, which is 9% below the national average of $278,155.
What is the demographic makeup of ZIP 04579? ▼
The largest racial group in ZIP 04579 is White at 85.7%.
How many businesses are in ZIP code 04579? ▼
ZIP code 04579 has 69 business establishments employing approximately 469 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 04579? ▼
The top industries by establishment count in ZIP 04579 are: Construction (29), Retail trade (12), Professional, scientific, and technical services (5). There are 8 industry sectors represented in total.
What is the education level in ZIP code 04579? ▼
In ZIP code 04579, 72.4% of residents aged 25+ have a high school diploma or higher, and 52.9% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 04579? ▼
The mean commute time for workers in ZIP code 04579 is 29.4 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 04579? ▼
In ZIP code 04579, approximately 95.5% of occupied housing units are owner-occupied and 4.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 04579? ▼
The poverty rate in ZIP code 04579 is 13.3% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.