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 Moderate-density area
- $102,175
- Median income Above-median income area
- $254,500
- Median home value Near-median home value
- 52.9%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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 average Maine ZIP), while per-capita income is $55,975. The poverty rate is 13.3%, with unemployment at 1.8%; those measures add context to the income figure. Median home value is $254,500 (10% below the average Maine ZIP); 95.5% of occupied 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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Sagadahoc County, so 04579 can be compared with both its immediate and county-level context.
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.
- Construction
Construction
29 establishments
- Retail trade
Retail trade
12 establishments
- Professional, scientific, and technical services 5
Professional, scientific, and technical services
5 establishments
- Real estate and rental and leasing 4
Real estate and rental and leasing
4 establishments
- Other services (except public administration) 4
Other services (except public administration)
4 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, 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
Who lives in ZIP 04579?
55.8
Median Age
50.7%
Male
49.3%
Female
2.6%
Foreign-Born
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 ZIP avg
$55,975
Per Capita Income
13.3%
Poverty Rate
1.8%
Unemployment Rate
29.4 min
Mean Commute Time
How ZIP 04579 ranks among Maine ZIPs
Woolwich, ME household income vs. every Maine ZIP code
Median household income among 395 reporting Maine ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$102,175 Top 9% higher than 91% of 395 Maine ZIPs
Each bar is a $20K-wide band; taller bars hold more Maine 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
1,430housing units
1,430
Total Housing Units
1,295
Occupied Units
135
Vacant Units
2.43
Avg Household Size
Occupancy Type
$254,500
Median Home Value
-10% vs state ZIP avg
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.
- 04530
Bath (04530)
10,818 residents
- 04578
Wiscasset (04578)
4,450 residents
- 04579 3,072
Woolwich (04579)
3,072 residents
- 04008 2,723
Bowdoinham (04008)
2,723 residents
- 04537 2,073
Boothbay (04537)
2,073 residents
- 04342 1,672
Dresden (04342)
1,672 residents
- 04556 1,249
Edgecomb (04556)
1,249 residents
- 04548 1,042
Georgetown (04548)
1,042 residents
- 04576 604
Southport (04576)
604 residents
What this shows Among its immediate neighbors, ZIP 04579 ranks #3 by population - useful context the national average alone can't give.
ZIP 04579 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 04575
West Boothbay Harbor (04575)
$116,250 median income
- 04556
Edgecomb (04556)
$108,750 median income
- 04008
Bowdoinham (04008)
$108,479 median income
- 04579
Woolwich (04579)
$102,175 median income
- 04576
Southport (04576)
$89,375 median income
- 04548
Georgetown (04548)
$84,250 median income
- 04578
Wiscasset (04578)
$81,063 median income
- 04530
Bath (04530)
$79,649 median income
- 04537
Boothbay (04537)
$76,667 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 04579, both outside ME so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (3,072 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Sagadahoc County
Related Areas
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.
Related
Take this with you
What to do with ZIP 04579's numbers, next.
- See how ZIP 04579 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Woolwich, ME ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.