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US ZIP Code Profile

ZIP Code 04103
Portland, Maine

ZIP code 04103 is in Portland, located in Cumberland County, Maine, within the Portland-South Portland metro area. Its 2020 Census population was 31,185. The estimated median adjusted gross income per tax return is $56,034, and about 7% of filers report $200,000 or more.

2020 Population
31,185
Census ZCTA
County
Cumberland
FIPS 23005
Median income (est.)
$56,034
IRS SOI 2022
Land Area
10.272 mi²
+ 0.751 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityPortland, ME
CountyCumberland County (FIPS 23005)
StateMaine (FIPS 23)
Metro Area (MSA)Portland-South Portland, ME Metro Area (38860)
Census Region / DivisionNortheast Region · New England Division
Coordinates43.695423, -70.28865
Land / Water Area10.272 mi² land · 0.751 mi² water

02Income & Economics

Distribution of the 16,460 individual tax returns filed in 04103 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
22.2%
$25K–$50K
23.5%
$50K–$75K
17.6%
$75K–$100K
10.8%
$100K–$200K
18.5%
$200K+
7.3%
The $200,000+ bracket accounts for 35% of 04103's total adjusted gross income, from 7% of returns — a concentration that drives the gap between the median ($56,034) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 04103's IRS income metrics, 2020–2022.

Median income (2021→2022)
$56,034
▲ 9.8%
Filers earning $200K+
7.3%
▲ 0.7 pt
Total filers
16,460
▼ 0.3%
GET /zipc/v2/zipcodes/04103/soi?year=… $47K 2020 $51K 2021 $56K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 04103 ZCTA.

2000
29,135
 
2010
30,606
▲ +5.0%
2020
31,185
▲ +1.9%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 04103. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 04103

Portland and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 04103 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number226900
City AliasesPortland

07Frequently Asked Questions

What county is ZIP code 04103 in?

ZIP code 04103 is in Cumberland County, Maine (county FIPS code 23005).

What city is ZIP code 04103?

The primary USPS city for 04103 is Portland, ME.

What metro area (MSA) is 04103 in?

04103 is part of the Portland-South Portland, ME Metro Area (MSA code 38860).

What is the population of ZIP code 04103?

The 2020 Census population of 04103 was 31,185 residents.

What is the median income in ZIP code 04103?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 04103 is about $56,034, with around 7% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.