04103 ZIP Code, Portland, ME
04103 is a ZIP code in Portland, Maine in Cumberland County. It covers 10 square miles of land. The closest ZIP codes are 04101, 04102 and 04105. 32,024 people live here in 13,657 households, which puts it among the most populous 1% of Maine ZIP codes. At about 3,131 people per square mile it has suburban density, and owners and renters are mixed (62% own). Median household income is $89,796, above the Maine median of $74,733.
Quick facts
- Mailing city: Portland, ME
- County: Cumberland County
- Land area: 10 sq mi
- Population: 32,024
- Median household income: $89,796
- Carrier routes: 34 (14,189 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 32,024 |
| Households | 13,657 |
| Median household income | $89,796 |
| Income per person | $52,395 |
| Median age | 38.1 |
| Homeowners | 61.5% |
| Median home value | $459,500 |
| Median rent | $1,620 |
| Bachelor's degree or higher | 59.0% |
| Average commute (minutes) | 20.2 |
| Households with kids under 18 | 25.4% |
| Moved in the past year | 12.4% |
| Below the poverty line | 9.2% |
| Broadband internet | 91.0% |
| Speak a non-English language at home | 12.0% |
Household income
| % of households | Value |
|---|---|
| <$10K | 3.3% |
| $10–15K | 2.1% |
| $15–25K | 6.3% |
| $25–35K | 5.1% |
| $35–50K | 9.5% |
| $50–75K | 17.2% |
| $75–100K | 10.7% |
| $100–150K | 17.6% |
| $150–200K | 13.7% |
| $200K+ | 14.5% |
Age
| % of all residents | Value |
|---|---|
| <10 | 10.2% |
| 10–19 | 10.8% |
| 20–24 | 6.2% |
| 25–34 | 15.9% |
| 35–44 | 14.8% |
| 45–54 | 12.3% |
| 55–64 | 12.2% |
| 65–74 | 9.7% |
| 75+ | 8.1% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 40.4% |
| Owned outright | 18.2% |
| Rented | 35.7% |
| Vacant | 5.8% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 51.8% |
| Townhome | 7.4% |
| 2–4 units | 24.6% |
| 5–19 units | 7.8% |
| 20+ units | 8.3% |
| Mobile / other | 0.2% |
Businesses in 04103
1,106 business establishments with 14,472 employees (ZIP Codes Business Patterns 2023).
- Health Care and Social Assistance: 173
- Other Services (except Public Administration): 146
- Construction: 132
- Professional, Scientific, and Technical Services: 103
- Retail Trade: 83
- Accommodation and Food Services: 72
- Administrative and Support and Waste Management and Remediation Services: 68
- Wholesale Trade: 66
EDDM carrier routes
04103 has 34 USPS carrier routes with 14,189 residential and 991 business mailboxes. Open the EDDM route map.
Carrier routes in 04103
04103 has 34 USPS carrier routes (34 city (C)) with 14,189 residential and 991 business mailboxes. Routes range from 173 homes (C067) to 735 homes (C083); the median route has 407 homes. The Census counted 13,657 households in 04103 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 26 |
| 500–749 | 7 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 04103 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C067 — USPS business mailboxes 222, 173 homes
- Route C048 — USPS business mailboxes 136, 339 homes
- Route C065 — USPS business mailboxes 121, 257 homes
- Route C082 — USPS business mailboxes 71, 607 homes
- Route C059 — USPS business mailboxes 60, 466 homes
Select these 5 routes on the route map
Every carrier route in 04103
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C034 | City | 402 | 8 | $152,925 | — | — | — |
| C043 | City | 592 | 42 | $29,243 | — | — | — |
| C045 | City | 609 | 1 | $137,800 | — | — | — |
| C047 | City | 294 | 12 | $157,456 | — | — | — |
| C048 | City | 339 | 136 | $59,728 | — | — | — |
| C049 | City | 328 | 0 | $98,184 | — | — | — |
| C050 | City | 323 | 14 | $65,344 | — | — | — |
| C051 | City | 390 | 9 | $102,589 | — | — | — |
| C052 | City | 311 | 0 | $157,456 | — | — | — |
| C053 | City | 321 | 2 | $103,541 | — | — | — |
| C054 | City | 331 | 45 | $87,489 | — | — | — |
| C055 | City | 432 | 14 | $103,541 | — | — | — |
| C056 | City | 456 | 3 | $59,728 | — | — | — |
| C057 | City | 366 | 22 | $76,398 | — | — | — |
| C059 | City | 466 | 60 | $88,989 | — | — | — |
| C063 | City | 526 | 12 | $97,051 | — | — | — |
| C065 | City | 257 | 121 | $59,728 | — | — | — |
| C066 | City | 411 | 6 | $106,429 | — | — | — |
| C067 | City | 173 | 222 | $31,899 | — | — | — |
| C069 | City | 457 | 24 | $76,925 | — | — | — |
| C074 | City | 375 | 0 | $144,160 | — | — | — |
| C077 | City | 362 | 3 | $137,800 | — | — | — |
| C080 | City | 376 | 24 | $76,398 | — | — | — |
| C081 | City | 418 | 3 | $97,768 | — | — | — |
| C082 | City | 607 | 71 | $76,398 | — | — | — |
| C083 | City | 735 | 12 | $88,989 | — | — | — |
| C091 | City | 447 | 11 | $90,919 | — | — | — |
| C092 | City | 510 | 11 | $157,456 | — | — | — |
| C093 | City | 489 | 15 | $89,564 | — | — | — |
| C094 | City | 510 | 14 | $118,560 | — | — | — |
| C095 | City | 414 | 5 | $106,429 | — | — | — |
| C097 | City | 435 | 6 | $97,051 | — | — | — |
| C098 | City | 354 | 57 | $65,344 | — | — | — |
| C099 | City | 373 | 6 | $76,398 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 04103 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 04101 — Portland city, ME (2.7 mi)
- 04102 — Portland city, ME (2.9 mi)
- 04105 — Falmouth CDP, ME (3.2 mi)
- 04092 — Westbrook city, ME (3.3 mi)
- 04109 — Portland city, ME (4 mi)
- 04106 — South Portland city, ME (4.4 mi)
- 04110 (6.2 mi)
- 04108 — Portland city, ME (6.5 mi)
Areas that include 04103
- Portland, ME ZIP codes — 6 ZIP codes
- Cumberland County ZIP codes — 38 ZIP codes
- Maine ZIP code data
Where it ranks
- No. 7 of 28: highest share of residents who moved in during the past year in Cumberland County
- No. 3 of 28: lowest median age in Cumberland County
Mail every home in 04103
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 04103, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 04103 in?
- 04103 is a Portland, ME mailing address. By land area, 100% lies inside Portland.
- What county is 04103 in?
- 04103 is in Cumberland County.
- What is the population of 04103?
- About 32,024 people (±1,267), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 31,185.
- What is the median household income in 04103?
- $89,796 (±$7,586), compared with $74,733 for Maine as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 04103?
- 34 USPS carrier routes with 14,189 residential and 991 business mailboxes (15,167 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 04103?
- The closest, measured center to center: 04101 (2.7 mi, Portland), 04102 (2.9 mi, Portland), 04105 (3.2 mi, Falmouth), 04092 (3.3 mi, Westbrook), 04109 (4 mi, Portland) and 04106 (4.4 mi, South Portland).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.