Residential delivery area · Maine
ZIP Code 04105: Falmouth, ME
ZIP code 04105 uses the postal name Falmouth, Maine and lies entirely in Cumberland County (Census 2020 ZIP-county file). About 13,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $150,919 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Falmouth (8%) and Falmouth Foreside (5%); 87% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Falmouth · its only residential ZIP
- County
- Cumberland County
- Census places
- Falmouth (8%) census-designated place; Falmouth Foreside (5%) census-designated place
- Metro area
- Portland-South Portland, ME
- House district
- ME-1 119th Congress
- State
- Maine
- Time zone
- Eastern
- Land area
- 29.3 sq mi · 435 people per sq mi
Where is ZIP code 04105?
04105 centers on 43.740°, -70.277° and covers 29.3 square miles of land plus 6.9 of water. It borders 5 ZIP codes: 04103, 04021, 04092, 04110, 04062.
The map draws ZIP code areas only. For the streets inside 04105, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 04105 compare with the rest of Cumberland County?
| Measure | 04105 | In Cumberland County | In ME |
|---|---|---|---|
| People (ACS 2020-2024) | 12,755 | 10th of 38 | 19th of 426 |
| Median household income | $151k | 2nd of 24 | 2nd of 200 |
| Median home value | $768k | 2nd of 27 | 3rd of 242 |
Its median household income is higher than in 96% of U.S. residential ZIP codes, and it is denser than 71% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 04105?
The 2020 Census counted 12,406 people in 04105; the ACS, which samples households over 2020-2024, estimates 12,755. Between the 2010 and 2020 censuses its population grew 11.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 12,755
- 2020 Census count
- 12,406+11.2% since 2010 (11,158)
- Households
- 4,989
- Median age
- 47.0
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 04105?
Of the 12,755 people the ACS estimates in 04105, 24.2% are under 18 and 24.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.3%).
- Under 1824.2%
- 18 to 6451.3%
- 65 and older24.5%
- White, not Hispanic85.3%
- Other or two or more8.8%
- Hispanic or Latino3.6%
- Asian, not Hispanic2.0%
- Black, not Hispanic0.2%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 04105 earn?
Median household income is $150,919 (ACS 2020-2024), the 2nd highest of the 24 ranked ZIP codes in Cumberland County. It is not measurably different from 2015-2019 ($147,606 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $150,919±$23,731
- Income per person
- $87,611
- Below the poverty line
- 2.3%
- Unemployed (of the labor force)
- 2.7%
- Adults 25+ with a bachelor's degree
- 72.6%
- Adjusted gross income per tax return, 2022
- $205,5326,600 returns; wages 56% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 04105?
FHFA's house price index for 04105, built from repeat sales and appraisals of the same homes, rose 99% from 2015 to 2025 and rose 63% from 2020 to 2025, and moved −1.1% in 2025.
- Median home value (owners' estimate)
- $767,500
- Median gross rent
- $2,120
- Homes owned by their occupants
- 84.4%
- Housing units
- 5,283
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 04105?
555 business establishments had a location in this ZIP code in 2023, 50 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance86
- Professional, scientific, and technical services82
- Construction67
- Real estate and rental and leasing52
- Finance and insurance49
- Retail trade47
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 04105?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 04103 | Portland | 32,024 | $90k | 3.2 mi |
| 04021 | Cumberland Center | 6,990 | $173k | 3.6 mi |
| 04092 | Westbrook | 20,775 | $85k | 4.4 mi |
| 04110 | Cumberland Foreside | 1,657 | $194k | 4.8 mi |
| 04062 | Windham | 19,188 | $108k | 7.4 mi |
| 04101 | Portland | 18,431 | $64k | 5.5 mi (near) |
| 04102 | Portland | 17,267 | $83k | 6.0 mi (near) |
| 04109 | Portland | 213 | – | 6.0 mi (near) |
| 04096 | Yarmouth | 9,053 | $110k | 6.9 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.