Residential delivery area · Maine
ZIP Code 04348: Jefferson, ME
ZIP code 04348 uses the postal name Jefferson, Maine and lies entirely in Lincoln County (Census 2020 ZIP-county file). About 3,500 people live there (Census Bureau, ACS 2020-2024). Median household income is $78,929 (Census Bureau, ACS 2020-2024). Its land lies outside any incorporated or census-designated place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Jefferson · its only residential ZIP
- County
- Lincoln County
- House district
- ME-1 119th Congress
- State
- Maine
- Time zone
- Eastern
- Land area
- 75.3 sq mi · 46 people per sq mi
Where is ZIP code 04348?
04348 centers on 44.211°, -69.499° and covers 75.3 square miles of land plus 6.9 of water. It borders 8 ZIP codes: 04353, 04574, 04555, 04363, 04572, 04535, 04553, 04354.
The map draws ZIP code areas only. For the streets inside 04348, 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 04348 compare with the rest of Lincoln County?
| Measure | 04348 | In Lincoln County | In ME |
|---|---|---|---|
| People (ACS 2020-2024) | 3,484 | 3rd of 27 | 107th of 426 |
| Median household income | $79k | 3rd of 6 | 77th of 200 |
| Median home value | $286k | 9th of 12 | 99th of 242 |
Its median household income is higher than in 61% of U.S. residential ZIP codes, and it is denser than 41% 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 04348?
The 2020 Census counted 3,152 people in 04348; the ACS, which samples households over 2020-2024, estimates 3,484. Between the 2010 and 2020 censuses its population grew 5.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 3,484
- 2020 Census count
- 3,152+5.9% since 2010 (2,976)
- Households
- 1,232
- Median age
- 36.5
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 04348?
Of the 3,484 people the ACS estimates in 04348, 28.2% are under 18 and 17.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (92.0%).
- Under 1828.2%
- 18 to 6454.3%
- 65 and older17.5%
- White, not Hispanic92.0%
- Other or two or more5.7%
- Hispanic or Latino2.4%
- Black, not Hispanic0.0%
- Asian, not Hispanic0.0%
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 04348 earn?
Median household income is $78,929 (ACS 2020-2024), the 3rd highest of the 6 ranked ZIP codes in Lincoln County. It is not measurably different from 2015-2019 ($74,958 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $78,929±$11,314
- Income per person
- $33,020
- Below the poverty line
- 6.7%
- Unemployed (of the labor force)
- 5.9%
- Adults 25+ with a bachelor's degree
- 27.2%
- Adjusted gross income per tax return, 2022
- $65,3441,670 returns; wages 66% 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 04348?
FHFA's house price index for 04348, built from repeat sales and appraisals of the same homes, rose 106% from 2015 to 2025 and rose 67% from 2020 to 2025, and moved −0.8% in 2025.
- Median home value (owners' estimate)
- $286,300
- Median gross rent
- $1,193
- Homes owned by their occupants
- 84.3%
- Housing units
- 1,889
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 04348?
54 business establishments had a location in this ZIP code in 2023, 6 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction15
- Real estate and rental and leasing6
- Transportation and warehousing5
- Other services (except public administration)5
- Professional, scientific, and technical services4
- Accommodation and food services4
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 04348?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 04353 | Whitefield | 2,115 | $74k | 6.0 mi |
| 04574 | Washington | 1,624 | $60k | 6.3 mi |
| 04555 | Nobleboro | 1,906 | $100k | 7.6 mi |
| 04363 | Windsor | 2,690 | $63k | 8.1 mi |
| 04572 | Waldoboro | 5,253 | $69k | 8.4 mi |
| 04535 | Alna | 818 | $93k | 10.1 mi |
| 04553 | Newcastle | 1,913 | $90k | 11.5 mi |
| 04354 | Palermo | 1,473 | $89k | 13.2 mi |
| 04341 | Coopers Mills | 42 | – | 4.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.