PlainZIP

Southport, ME · standard

ZIP Code 04576

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

604
46/sq mi
$89,375
Median income
$489,600
Median home value
58.5%
Bachelor's or higher

The verdict

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

Top 27%
household income, US ZIPs
Top 13%
home value, US ZIPs
46
people per sq mi
89%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 04576 against every reporting US ZIP.

ZIP code 04576 is a sparsely populated ZIP (a standard USPS delivery area) in Southport, Lincoln County, Maine, home to just 604 residents across 13.2 square miles, a density of 46 people per square mile, in the New York time zone.

ZIP 04576 lands in the middle-income range, with a median household income of $89,375 (22% above the Maine average), while per-capita income is $62,890. Local economic indicators show a 5.5% poverty rate alongside 6.7% unemployment. On housing, the median home value is $489,600 (73% above the state average) with median rent at $1,094 per month, and 89.3% of occupied units are owner-occupied.

This is a highly-educated ZIP: 58.5% of adults hold a bachelor's degree or higher, the median age is 66.6, and the average commute is -. To put 04576 in local context, 10 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Lincoln County, for a geography-aware comparison.

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 04576

Top 5 sectors by establishment count in Southport, ME

Which industries have the most business establishments in ZIP 04576.

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 04576, Southport, 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

604

Population

13.2

Area (sq mi)

46

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 04576?

66.6

Median Age

42.6%

Male

57.4%

Female

7.1%

Foreign-Born

White 96.0%
African American 0.0%
Asian 2.4%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 1.6%
Hispanic or Latino 1.6%

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?

$89,375

Median Household Income

+22% vs state

$62,890

Per Capita Income

5.5%

Poverty Rate

6.7%

Unemployment Rate

How ZIP 04576 ranks nationally

Southport, ME household income vs. every US ZIP code

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

$89,375 Top 27% higher than 73% 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%). This entry sits in this band. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $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 76.2%
Bachelor's Degree or Higher 58.5%

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

What does housing look like?

913

Total Housing Units

299

Occupied Units

614

Vacant Units

1.83

Avg Household Size

Occupancy Type

Owner 89.3%
Renter 10.7%

$489,600

Median Home Value

+73% vs state

$1,094

Median Rent

1954

Median Year Built

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

What businesses operate in this ZIP?

Census Bureau data shows 26 business establishments in ZIP 04576, employing approximately 89 people with a combined annual payroll of $5,791,000.

26

Businesses

89

Employees

$5.8M

Annual Payroll

4

Industry Sectors

Industry Establishments % of Total
Construction 5 19.2%
Accommodation and food services 5 19.2%
Professional, scientific, and technical services 3 11.5%
Other services (except public administration) 3 11.5%

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 04576 vs 04575 →

ZIP 04576 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 04576 ranks #7 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 04576 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 04576 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
04575 West Boothbay Harbor, ME 85 2.1 mi
04570 Squirrel Island, ME 2 2.0 mi
04538 Boothbay Harbor, ME 2,080 3.0 mi
04571 Trevett, ME 323 5.2 mi
04548 Georgetown, ME 1,042 4.1 mi
04544 East Boothbay, ME 724 4.3 mi
04537 Boothbay, ME 2,073 5.6 mi
04568 South Bristol, ME 391 6.9 mi
04556 Edgecomb, ME 1,249 10.3 mi
04579 Woolwich, ME 3,072 10.9 mi

More ZIP Codes in Lincoln County

04572 standard
Waldoboro, ME
Pop: 5,075
04578 standard
Wiscasset, ME
Pop: 4,450
04348 standard
Jefferson, ME
Pop: 2,976
04353 standard
Whitefield, ME
Pop: 2,300
04543 standard
Damariscotta, ME
Pop: 2,218
04538 standard
Boothbay Harbor, ME
Pop: 2,080

Related Areas

Lincoln County Southport, ME Maine

Frequently Asked Questions

What county is ZIP code 04576 in? ▼
ZIP code 04576 (Southport) is located in Lincoln County, Maine. Lincoln County contains multiple ZIP codes, see the full list at /counties/lincoln-me.
What is the population of ZIP code 04576? ▼
ZIP code 04576 in Southport, ME has a population of 604 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 04576? ▼
The median household income in ZIP 04576 is $89,375, which is 17% above the national average of $76,288.
What is the average home value in ZIP 04576? ▼
The median home value in ZIP 04576 is $489,600, which is 76% above the national average of $278,155.
What is the demographic makeup of ZIP 04576? ▼
The largest racial group in ZIP 04576 is White at 96.0%. Hispanic or Latino residents make up 1.6% of the population.
How many businesses are in ZIP code 04576? ▼
ZIP code 04576 has 26 business establishments employing approximately 89 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 04576? ▼
The top industries by establishment count in ZIP 04576 are: Construction (5), Accommodation and food services (5), Professional, scientific, and technical services (3). There are 4 industry sectors represented in total.
What is the education level in ZIP code 04576? ▼
In ZIP code 04576, 76.2% of residents aged 25+ have a high school diploma or higher, and 58.5% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 04576? ▼
In ZIP code 04576, approximately 89.3% of occupied housing units are owner-occupied and 10.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 04576? ▼
The poverty rate in ZIP code 04576 is 5.5% 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.