| City: | Portland, Maine |
| City Alias: | Cushing Is, Cushing Island, Diamond Cove, Diamond Is, Diamond Island, Great Diamond Island, Grt Dia Is, House Island, Little Diamond Island, Ltle Dia Is |
| County: | Cumberland County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 8:19:31 PM |
| Population: | 133 [See All] |
| Area Code: | 207 |
| Classification: | Standard [Normal Street Delivery] |
| Coordinates: | 43.6797, -70.1967 |
| Land Area: | 1.241 sq mi |
| Quick Link: |
ZIP Code 04109 has 133 residents and 57 households (average 2.33 persons per household). The median age is 56.3 years, significantly older than the state (45.1) and significantly older than the nation (38.8). The gender split is 54.9% male and 45.1% female, which is higher than the state male share (49.0%), making this a male-majority area. Largest groups are White (96.2%, much higher than the national average of 61.6%) and Asian (1.5%, lower than the national average of 6.0%); Hispanic or Latino residents make up 0.0%, which is much lower than the national average (18.7%).
Explore More: Population Over Time By Age & Gender By Race By Gender Nativity & Citizenship
| 2020 Population: | 133Source: Census DHC |
| 2023 ACS Population Estimate: | 188Source: Census ACS |
| 2025 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 107.2 people per sq mile |
| Average Income: | $0Source: Census ACS |
| Households: | 57Source: Census DHC |
| Average House Value: | $717,700Source: Census ACS |
| Persons Per Household: | 2.33Source: Census DHC |
| Average Family Size: | 3.24Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 117 | 73 | 94 | 119 | 118 | 104 | 83 | 100 | 70 | 80 | 130 | 141 | 188 |
| Decennial Census | 93 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 133 | -- | -- | -- |
Median Age: 56.3
Male Median Age: 55.9
Female Median Age: 57.7
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 3 | 6 | 4 | 3 | 3 | 5 | 0 | 3 | 2 | 0 | 1 | 12 | 7 | 4 | 12 | 4 | 1 | 3 |
| Female | 1 | 1 | 2 | 1 | 3 | 1 | 0 | 5 | 2 | 3 | 9 | 3 | 5 | 12 | 6 | 4 | 0 | 2 |
| Total | 4 | 7 | 6 | 4 | 6 | 6 | 0 | 8 | 4 | 3 | 10 | 15 | 12 | 16 | 18 | 8 | 1 | 5 |
| White: | 128 | 98.46% |
| Black: | 0 | 0% |
| Hispanic:* | 0 | 0% |
| Asian: | 2 | 1.54% |
| American Indian: | 0 | 0% |
| Hawaiian: | 0 | 0% |
| Other: | 0 | 0% |
| Total: | 130 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 73 | 54.89% | 55.9 years |
| Females: | 60 | 45.11% | 57.7 years |
| Total: | 133 | 100% | 56.3 years |
| Native, born in the United States: | 188 | 100.00% |
| Native, born in PR, Island Areas, or abroad: | 0 | 0.00% |
| Foreign born, naturalized U.S. citizen: | 0 | 0.00% |
| Foreign born, not a U.S. citizen: | 0 | 0.00% |
| Total Population: | 188 | 100% |
| Total Native Population: | 188 | 100.00% |
| Total Foreign-born Population: | 0 | 0.00% |
In 2023, the Median household income is $0, which is far less than the state median ($71,773), is down $64,542 (100.0%) since 2011 and below its 2019 pre-pandemic level by $65,417. Family households earn a median of $120,917 versus $24,632 for nonfamily households (a difference of $96,285). By gender, male median income is $0 and female is $0, which is well under the state female median ($51,479), with a current gap of $0 that has stayed about the same from 2011 to 2023. The labor-force participation rate is 28.1%, which is much lower than the national rate (63.5%). The unemployment rate is 0.0%, which is markedly below the national rate (5.2%). The largest occupation group is Management (94.2%).
Explore More: Income Over Time Household Income Employment Status By Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $64,542 | $68,750 | $71,250 | $59,750 | $60,547 | $62,788 | $62,589 | $65,288 | $65,417 | $35,288 | $0 | $0 | $0 |
| Median Family Income | $64,458 | $83,750 | $112,969 | $112,667 | $60,938 | $62,692 | $63,750 | $66,154 | $0 | $0 | $0 | $132,083 | $120,917 |
| Median NonFamily Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $35,673 | $0 | $24,076 | $24,632 |
| Median Male Income | $0 | $110,682 | $0 | $112,833 | $0 | $62,788 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Median Female Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Employed: | 52 | 28.11% |
| Unemployed: | 0 | 0.00% |
| Not In Labor Force: | 133 | 71.89% |
| Total: | 185 | 100% |
| Management, business, science, and arts: | 49 | 94.23% |
| Service: | 3 | 5.77% |
| Sales and Office: | 0 | 0.00% |
| Natural resources, construction, and maintenance: | 0 | 0.00% |
| Production, transportation, and material moving: | 0 | 0.00% |
| Total Civilian Employed Population: | 52 | 100% |
In 2023, the median home value is $717,700, which is much higher than the state median ($266,400), is up $369,800 (106.29%) since 2011 and above its 2019 pre-pandemic level by $265,100. The median gross rent is $0, which is far less than the state median ($1,084), and above its 2019 pre-pandemic level by $0. Of occupied housing, owners make up 100.00% (39.22% with a mortgage, 60.78% free-and-clear) and renters 0.00% - making this ZIP Code more home ownership than the state and under national rental averages. The vacancy rate is 69.09%, which is far higher than the national rate (10.43%).
Explore More: Compare Home Value Home Value Over Time Rent & Over Time Housing Occupancy
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $347,900 | $187,500 | $331,300 | $316,700 | $308,300 | $0 | $482,100 | $452,600 | $452,600 | $451,200 | $458,700 | $576,000 | $717,700 |
| Less than $500: | 0 | 0% |
| $500 to $999: | 0 | 0% |
| $1,000 to $1,499: | 0 | 0% |
| $1,500 to $1,999: | 0 | 0% |
| $2,000 to $2,499: | 0 | 0% |
| $2,500 to $2,999: | 0 | 0% |
| $3,000 or more: | 0 | 0% |
| No Rent: | 0 | 0% |
| Total: | 0 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Owner Occupied (with mortgage): | 40 | 39.22% |
| Owner Occupied (free and clear, no mortgage): | 62 | 60.78% |
| Renter Occupied: | 0 | 0.00% |
| Total Occupied Housing Units: | 102 | 100% |
| Occupied Housing Units: | 102 | 30.91% |
| Vacant Housing Units (not graphed): | 228 | 69.09% |
| Total Housing Units: | 330 | 100% |
| Single-Family Units: | 330 | 100.00% |
| Multi-Family Units: | 0 | 0.00% |
| Other Units: | 0 | 0.00% |
| Total Housing Units: | 330 | 100% |
In 2023, 87.60% of adults (25+) have a bachelor's degree or higher, which is far higher than the national rate (35.00%), well above both the state and national averages. High school or higher is 100.00%, which is comparable to the national rate (89.40%). The uninsured rate is 6.90%, which is comparable to the national rate (8.60%). Private coverage is 48.90%, which is generally lower than the state rate (69.50%). Public coverage is 76.60%, which is far higher than the national rate (36.30%). The share of people in poverty is 24.70%, which is on par with the state rate (6.50%), up 24.70 percentage points since 2011 and above its 2019 pre-pandemic level by 3.90 percentage points. This signals a sharp increase in hardship - a shrinking consumer base, heavy pressure on public services, and job-market contraction risks. Among residents ages 3+, the largest enrollment group is pre-K (100.00%). College enrollment is 0.00%, which is on par with the state rate (27.90%), meaning the community mirrors broader higher-education participation.
Explore More: Educational Attainment Health Insurance Poverty Over Time School Enrollment
| Less than 9th grade: | 0 | 0.00% |
| 9th to 12th grade, no diploma: | 0 | 0.00% |
| High school graduate (includes equivalency): | 17 | 9.19% |
| Some college, no degree: | 6 | 3.24% |
| Associate's degree: | 0 | 0.00% |
| Bachelor's degree: | 79 | 42.70% |
| Graduate or professional degree: | 83 | 44.86% |
| Total: | 185 | 100% |
| High school or higher: | 185 | 100.00% |
| Bachelor's degree or higher: | 162 | 87.57% |
| Private Insurance: | 92 | 36.95% |
| Public Insurance: | 144 | 57.83% |
| No Insurance: | 13 | 5.22% |
| Total: | 249 | 100% |
| Has Health Insurance: | 236 | 94.78% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 15.6% | 20.8% | 59.1% | 32.6% | 27.8% | 24.7% |
Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.
| Nursery School, Preschool: | 3 | 100.00% |
| Kindergarten: | 0 | 0.00% |
| Elementary school (grades 1-8): | 0 | 0.00% |
| High school (grades 9-12): | 0 | 0.00% |
| College or graduate school: | 0 | 0.00% |
| Total: | 3 | 100% |
| Early Childhood: | 3 | 100.00% |
| K-12 (Primary & Secondary School): | 0 | 0.00% |
ZIP Code 04109 supports both business and residential activity. According to the Business Census (2023), there are 5 business establishments, employing about 31 people with an annual payroll of $1,667,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 23Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 5Source: CBP |
| 1st Quarter Payroll: | $327,000Source: CBP |
| Annual Payroll: | $1,667,000Source: CBP |
| # of Employees: | 31Source: CBP |
ZIP Code 04109 is located in Cumberland County, Maine, within the Portland-South Portland, ME Metropolitan Statistical Area (CBSA 38860) and Maine's 1st Congressional District. This Metro area has a population of 557,764 people, about 0.02% of whom live in ZIP Code 04109. It covers 1.241 sq mi of land and a water area of 6.318 sq mi.
| CBSA Name: | Portland-South Portland, MESource: Census |
| CBSA Number: | 38860Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 557,764Source: Census |
| MSA: | Portland, ME MSASource: Census |
| Land Area: | 1.241 sq miSource: Census |
| Water Area: | 6.318 sq miSource: Census |
| Congressional District: | 01Source: USPS |
| Congressional Land Area: | 3285.52 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 2360545Source: Census |
| Place Name: | Portland city; MaineSource: Census |
We could not locate which school district 04109 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on October 1, 2025.