Residential delivery area · Maine
ZIP Code 04355: Readfield, ME
ZIP code 04355 uses the postal name Readfield, Maine and lies entirely in Kennebec County (Census 2020 ZIP-county file). About 2,700 people live there (Census Bureau, ACS 2020-2024). Median household income is $86,504 (Census Bureau, ACS 2020-2024). Its land lies outside any incorporated or census-designated place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Readfield · its only residential ZIP
- County
- Kennebec County
- Micro area
- Augusta-Waterville, ME
- House district
- ME-2 119th Congress
- State
- Maine
- Time zone
- Eastern
- Land area
- 29.1 sq mi · 91 people per sq mi
Where is ZIP code 04355?
04355 centers on 44.384°, -69.950° and covers 29.1 square miles of land plus 1.8 of water. It borders 6 ZIP codes: 04364, 04351, 04284, 04352, 04349, 04917.
The map draws ZIP code areas only. For the streets inside 04355, 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 04355 compare with the rest of Kennebec County?
| Measure | 04355 | In Kennebec County | In ME |
|---|---|---|---|
| People (ACS 2020-2024) | 2,651 | 14th of 27 | 142nd of 426 |
| Median household income | $87k | 4th of 17 | 56th of 200 |
| Median home value | $326k | 2nd of 22 | 74th of 242 |
Its median household income is higher than in 70% of U.S. residential ZIP codes, and it is denser than 52% 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 04355?
The 2020 Census counted 2,597 people in 04355; the ACS, which samples households over 2020-2024, estimates 2,651. Between the 2010 and 2020 censuses its population fell 0.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 2,651
- 2020 Census count
- 2,597−0.1% since 2010 (2,600)
- Households
- 1,027
- Median age
- 48.1
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 04355?
Of the 2,651 people the ACS estimates in 04355, 18.7% are under 18 and 22.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (95.9%).
- Under 1818.7%
- 18 to 6459.0%
- 65 and older22.3%
- White, not Hispanic95.9%
- Other or two or more2.2%
- Hispanic or Latino1.6%
- Black, not Hispanic0.3%
- 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 04355 earn?
Median household income is $86,504 (ACS 2020-2024), the 4th highest of the 17 ranked ZIP codes in Kennebec County. It is not measurably different from 2015-2019 ($99,438 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $86,504
- Income per person
- $41,938
- Below the poverty line
- 5.0%
- Unemployed (of the labor force)
- 6.3%
- Adults 25+ with a bachelor's degree
- 48.8%
- Adjusted gross income per tax return, 2022
- $80,6411,350 returns; wages 67% 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 04355?
FHFA's house price index for 04355, built from repeat sales and appraisals of the same homes, rose 113% from 2015 to 2025 and rose 71% from 2020 to 2025, and moved −4.0% in 2025.
- Median home value (owners' estimate)
- $326,400
- Median gross rent
- $1,125
- Homes owned by their occupants
- 89.9%
- Housing units
- 1,371
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 04355?
37 business establishments had a location in this ZIP code in 2023, 5 fewer than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction10
- Administrative and support and waste management and remediation services5
- Accommodation and food services3
- Other services (except public administration)3
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 04355?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 04364 | Winthrop | 6,191 | $87k | 5.2 mi |
| 04351 | Manchester | 2,424 | $92k | 5.2 mi |
| 04284 | Wayne | 1,101 | $93k | 5.7 mi |
| 04352 | Mount Vernon | 1,716 | $74k | 5.7 mi |
| 04349 | Kents Hill | 1,383 | $60k | 6.7 mi |
| 04917 | Belgrade | 3,351 | $88k | 9.0 mi |
| 04265 | North Monmouth | 552 | $44k | 8.4 mi (near) |
| 04347 | Hallowell | 2,592 | $68k | 9.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.