| City: | South Gardiner, Maine |
| City Alias: | S Gardiner |
| County: | Kennebec County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 8:02:17 PM |
| Population: | 455 [See All] |
| Area Code: | 207 |
| Classification: | PO Box |
| Coordinates: | 44.1792, -69.7604 |
| Land Area: | 0.745 sq mi |
| Quick Link: |
South Gardiner is a small riverfront community in Kennebec County, Maine, where PO Boxes are the only option for mail delivery across its 1.04 square mile territory. This is a PO Box Only Zone, which means there's no alternative delivery method for the 455 residents and 190 households who live here. The post office maintains 216 PO Boxes, serving both local residents and some surrounding areas (a 1.14:1 adoption rate that exceeds the local household count).
Rural carrier delivery operates on two distinct routes, serving a modest network of 15 streets. Many street names point to the community's location along the Kennebec River: River Avenue, Riverside Road, and Riverview Drive are among the most documented addresses. The compact geography and river setting give South Gardiner its small-town character.
This is primarily a working-class community with above-average incomes for rural Maine. Median household income stands at $120,652, while median home values are $198,500. Most residents own their homes (159 of 190 households, or 84%). The population skews older, with a median age of 40.9 years, and relatively few children (only 23 residents under age 18). Educational attainment is modest, with 16.4% holding bachelor's degrees or higher.
South Gardiner's postal history dates back to before October 2004, when tracking of ZIP code introduction dates began. The mailing address "S GARDINER" is also accepted as a valid abbreviation. For anyone mailing to this community, a PO Box address is required since street delivery doesn't exist here.
Street names emphasize the community's riverfront location along the Kennebec River.
ZIP Code 04359 has 455 residents and 190 households (average 2.38 persons per household). The median age is 40.9 years, younger than the state (45.1) and slightly older than the nation (38.8). The gender split is 53.0% male and 47.0% female, which is higher than the state male share (49.0%), making this a male-majority area. Largest groups are White (89.9%, much higher than the national average of 61.6%) and Hispanic or Latino (1.1%); Hispanic or Latino residents make up 1.1%, 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: | 455Source: Census DHC |
| 2024 ACS Population Estimate: | 298Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 610.7 people per sq mile |
| Average Income: | $0Source: Census ACS |
| Households: | 190Source: Census DHC |
| Average House Value: | $186,700Source: Census ACS |
| Persons Per Household: | 2.38Source: Census DHC |
| Average Family Size: | 2.99Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 396 | 356 | 455 | 530 | 506 | 566 | 457 | 286 | 330 | 267 | 282 | 326 | 375 | 298 |
| Decennial Census | 388 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 455 | -- | -- | -- | -- |
Median Age: 40.9
Male Median Age: 37.6
Female Median Age: 50.7
| 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 | 23 | 23 | 18 | 14 | 12 | 8 | 9 | 26 | 9 | 12 | 16 | 3 | 31 | 16 | 10 | 9 | 1 | 1 |
| Female | 10 | 11 | 12 | 13 | 10 | 5 | 18 | 9 | 2 | 9 | 24 | 27 | 21 | 13 | 16 | 9 | 0 | 5 |
| Total | 33 | 34 | 30 | 27 | 22 | 13 | 27 | 35 | 11 | 21 | 40 | 30 | 52 | 29 | 26 | 18 | 1 | 6 |
| White: | 409 | 96.69% |
| Black: | 2 | 0.47% |
| Hispanic:* | 5 | 1.18% |
| Asian: | 2 | 0.47% |
| American Indian: | 1 | 0.24% |
| Hawaiian: | 1 | 0.24% |
| Other: | 3 | 0.71% |
| Total: | 423 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 241 | 52.97% | 37.6 years |
| Females: | 214 | 47.03% | 50.7 years |
| Total: | 455 | 100% | 40.9 years |
| Native, born in the United States: | 298 | 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: | 298 | 100% |
| Total Native Population: | 298 | 100.00% |
| Total Foreign-born Population: | 0 | 0.00% |
In 2024, the Median household income is $0, which is well under the national median ($78,538), is down $73,611 (100.0%) since 2011 and above its 2019 pre-pandemic level by $0. Family households earn a median of $152,500 versus $0 for nonfamily households (a difference of $152,500). By gender, male median income is $80,625 and female is $59,179, which is much higher than the national female median ($53,445), with a current gap of $21,446 that has narrowed from 2011 to 2024. The labor-force participation rate is 71.0%, which is far greater 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 Natural resources (32.7%).
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 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $73,611 | $40,375 | $34,591 | $34,707 | $38,618 | $0 | $0 | $0 | $0 | $103,750 | $0 | $0 | $120,652 | $0 |
| Median Family Income | $84,773 | $40,556 | $35,375 | $34,884 | $39,145 | $38,750 | $0 | $0 | $0 | $105,450 | $110,673 | $118,194 | $123,125 | $152,500 |
| Median NonFamily Income | $33,636 | $33,375 | $0 | $0 | $0 | $0 | $0 | $0 | $31,458 | $0 | $33,708 | $36,310 | $0 | $0 |
| Median Male Income | $66,010 | $40,673 | $36,750 | $39,205 | $0 | $42,056 | $58,622 | $0 | $75,625 | $75,750 | $0 | $0 | $0 | $80,625 |
| Median Female Income | $42,159 | $19,574 | $23,276 | $23,026 | $0 | $23,914 | $36,050 | $39,444 | $45,398 | $49,438 | $51,875 | $56,708 | $59,054 | $59,179 |
| Employed: | 211 | 71.04% |
| Unemployed: | 0 | 0.00% |
| Not In Labor Force: | 86 | 28.96% |
| Total: | 297 | 100% |
| Management, business, science, and arts: | 46 | 21.80% |
| Service: | 38 | 18.01% |
| Sales and Office: | 25 | 11.85% |
| Natural resources, construction, and maintenance: | 69 | 32.70% |
| Production, transportation, and material moving: | 33 | 15.64% |
| Total Civilian Employed Population: | 211 | 100% |
In 2024, the median home value is $186,700, which is well under the national median ($303,400), is up $66,700 (55.58%) since 2011 and above its 2019 pre-pandemic level by $68,800. The median gross rent is $0, which is well under the national median ($1,348), and below its 2019 pre-pandemic level by $634. Of occupied housing, owners make up 25.00% (100.00% with a mortgage, 0.00% free-and-clear) and renters 75.00% - making this ZIP Code higher than national rental averages. The vacancy rate is 0.00%, which is much lower 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 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $120,000 | $102,000 | $107,000 | $102,900 | $108,000 | $111,000 | $112,700 | $110,300 | $117,900 | $143,300 | $171,400 | $170,500 | $198,500 | $186,700 |
| Less than $500: | 0 | 0.00% |
| $500 to $999: | 0 | 0.00% |
| $1,000 to $1,499: | 68 | 66.67% |
| $1,500 to $1,999: | 34 | 33.33% |
| $2,000 to $2,499: | 0 | 0.00% |
| $2,500 to $2,999: | 0 | 0.00% |
| $3,000 or more: | 0 | 0.00% |
| No Rent: | 0 | 0.00% |
| Total: | 102 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $634 | $632 | $693 | $743 | $0 | $0 |
| Owner Occupied (with mortgage): | 34 | 25.00% |
| Owner Occupied (free and clear, no mortgage): | 0 | 0.00% |
| Renter Occupied: | 102 | 75.00% |
| Total Occupied Housing Units: | 136 | 100% |
| Occupied Housing Units: | 136 | 100.00% |
| Vacant Housing Units (not graphed): | 0 | 0.00% |
| Total Housing Units: | 136 | 100% |
| Single-Family Units: | 102 | 75.00% |
| Multi-Family Units: | 0 | 0.00% |
| Other Units: | 34 | 25.00% |
| Total Housing Units: | 136 | 100% |
In 2024, 34.00% of adults (25+) have a bachelor's degree or higher, which is comparable to the national rate (35.00%). High school or higher is 85.30%, which is comparable to the national rate (89.40%). The uninsured rate is 11.70%, which is comparable to the national rate (8.60%). The share of people in poverty is 0.00%, which is comparable to the national rate (8.70%), and below its 2019 pre-pandemic level by 26.80 percentage points. Poverty has been broadly stable, which may reflect structural barriers or offsetting gains and setbacks. Among residents ages 3+, the largest enrollment group is elementary (100.00%). College enrollment is 0.00%, which is comparable to the national rate (26.70%), 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: | 38 | 14.67% |
| High school graduate (includes equivalency): | 95 | 36.68% |
| Some college, no degree: | 3 | 1.16% |
| Associate's degree: | 35 | 13.51% |
| Bachelor's degree: | 79 | 30.50% |
| Graduate or professional degree: | 9 | 3.47% |
| Total: | 259 | 100% |
| High school or higher: | 221 | 85.33% |
| Bachelor's degree or higher: | 88 | 33.98% |
| Private Insurance: | 182 | 47.15% |
| Public Insurance: | 169 | 43.78% |
| No Insurance: | 35 | 9.07% |
| Total: | 386 | 100% |
| Has Health Insurance: | 351 | 90.93% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 0.0% | 0.0% | 0.0% | 0.0% | 13.2% | 14.4% | 18.1% | 34.0% | 26.8% | 8.4% | 0.0% | 0.0% | 0.0% | 0.0% |
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: | 0 | 0.00% |
| Kindergarten: | 0 | 0.00% |
| Elementary school (grades 1-8): | 1 | 100.00% |
| High school (grades 9-12): | 0 | 0.00% |
| College or graduate school: | 0 | 0.00% |
| Total: | 1 | 100% |
| Early Childhood: | 0 | 0.00% |
| K-12 (Primary & Secondary School): | 1 | 100.00% |
ZIP Code 04359 supports both business and residential activity. According to the Business Census (2024), there are 5 business establishments, employing about 73 people with an annual payroll of $3,409,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 256Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 5Source: CBP |
| 1st Quarter Payroll: | $788,000Source: CBP |
| Annual Payroll: | $3,409,000Source: CBP |
| # of Employees: | 73Source: CBP |
ZIP Code 04359 is located in Kennebec County, Maine, within the Augusta-Waterville, ME Metropolitan Statistical Area (CBSA 12300) and Maine's 2nd Congressional District. This Micro area has a population of 122,151 people, about 0.37% of whom live in ZIP Code 04359. It covers 0.745 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Augusta-Waterville, MESource: Census |
| CBSA Number: | 12300Source: Census |
| CBSA Type: | MicroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 122,151Source: Census |
| MSA: | Source: Census |
| Land Area: | 0.745 sq miSource: Census |
| Water Area: | --Source: Census |
| Congressional District: | 02Source: USPS |
| Congressional Land Area: | 27557.4 sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | --Source: Census |
| Place Name: | --Source: Census |
ZIP Code 04359 is in the School Administrative District 11, which serves grades Pre-Kindergarten thru 12th. There are 1 public school(s) in this ZIP Code, and we have located 3 private school(s). 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 February 1, 2026.