🇺🇸 United States ZIP Code

STANDARD

04103

Portland

ZIP Code 04103 is a standard zip code serving Portland, Portland, Maine (ME), in Cumberland County, United States. It has an estimated population of 30,606 with a median household income of $54,239. 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: Portland
Timezone: America/New_York

Coordinates

Latitude: 43.687600
Longitude: -70.287600

Geographic Details

Land Area: 10.21 mi²
Water Area: 0.81 mi²
Population Density: 2998.0 people per mi² (85th percentile)
Bounding Box: 43.727686°N, 43.661124°S, -70.244993°E, -70.336369°W

With 30,606 residents spread across 10.21 square miles, this area has a population density of 2998.0 people per square mile.

Demographics

30,606

Population

90th percentile

$54,239

Median Income

60th percentile

$230,500

Median Home Value

80th percentile

10.21 mi²

Land Area

The median household income in 04103 is $54,239, and the median home value is $230,500.

Housing

14,053

Total Units

13,391

Occupied Units

95.3%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Portland, ME.

04101

Portland

04102

Portland

04104

Portland

04109

Portland

04112

Portland

04122

Portland

04123

Portland

04124

Portland

Similar ZIP Codes in Maine

ZIP codes with similar median household income in Maine.

04757

Mapleton

$50,929

04989

Vassalboro

$48,508

04664

Sullivan

$46,607

04290

Peru

$46,985

04932

Dixmont

$52,813

04259

Monmouth

$61,360

04022

Denmark

$47,500

04011

Brunswick

$54,758

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.