🇺🇸 United States ZIP Code

STANDARD

04106

South Portland

ZIP Code 04106 is a standard zip code serving South Portland, South Portland, Maine (ME), in Cumberland County, United States. It has an estimated population of 25,175 with a median household income of $52,858. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Maine (ME)
County: Cumberland
City: South Portland
Timezone: America/New_York

Coordinates

Latitude: 43.631800
Longitude: -70.270900

Geographic Details

Land Area: 12.21 mi²
Water Area: 2.03 mi²
Population Density: 2061.0 people per mi² (85th percentile)
Bounding Box: 43.658375°N, 43.597494°S, -70.213618°E, -70.370545°W

With 25,175 residents spread across 12.21 square miles, this area has a population density of 2061.0 people per square mile.

Demographics

25,175

Population

85th percentile

$52,858

Median Income

60th percentile

$218,600

Median Home Value

75th percentile

12.21 mi²

Land Area

The median household income in 04106 is $52,858, and the median home value is $218,600.

Housing

11,594

Total Units

10,979

Occupied Units

94.7%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in South Portland, ME.

04116

South Portland

Similar ZIP Codes in Maine

ZIP codes with similar median household income in Maine.

04422

Charleston

$51,538

04348

Jefferson

$50,580

04049

Limington

$57,567

04022

Denmark

$47,500

04460

Medway

$47,143

04858

South Thomaston

$55,104

04083

Springvale

$47,933

04428

Eddington

$47,679

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.