What city is ZIP code 04284?

ZIP code 04284 is in Winthrop, ME (Kennebec County).

What county is ZIP code 04284 in?

ZIP code 04284 is mostly in Kennebec County, Maine.

How many people live in ZIP code 04284?

About 1,101 people live in the 04284 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 04284

Winthrop, ME, Kennebec County

Population

1,101

Land area

18.4sq mi

People per sq mi

City

Winthrop

ZIP 04284 and nearby ZIP codes

Full map

ZIP 04284 at a glance

ZIP 04284 (Winthrop) is 33% denser than Maine as a whole.
The median household income is $93,194, 25% above the Maine median of $74,733.
A typical owner-occupied home is valued at $362,800 (22% above Maine) and median rent is $983 a month.

Local data for ZIP 04284

Counts from official public data

Housing and community stats

ZIP 04284, American Community Survey 2020-2024

Full profile

Median household income

$93,194

Poverty rate

7.9%

Median home value

$362,800

Median rent

$983/mo

Homeownership

89.9%

Bachelor's or higher

48.8%

Median age

55.6

Average commute

30.4 min

Income, education and commute

Economy and federal money

Businesses, pandemic loans and political donations

Details

Business establishments

ZIP Business Patterns 2023

Employees

$4.4M annual payroll

PPP loans

$2M

33 loans

Campaign donations

$23.1K

31% D, 16% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 04284, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: winter weather

Storm events since 1996

646

Countywide, mostly thunderstorm wind

Flood insurance policies

249

0.5% of homes, county

July high / Jan low

80° / 6°F

47.2 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 04284, CDC PLACES estimates

All 40 measures

Obesity

31.4%

U.S. 33.3% -1.9 pts

Diabetes

12.9%

U.S. 12.1% +0.8 pts

Smoking

13.0%

U.S. 12.8% about the same

Uninsured (18-64)

6.3%

U.S. 11.1% -4.8 pts

Frequently asked questions

What city is ZIP code 04284?: ZIP code 04284 is in Winthrop, ME (Kennebec County).
What county is ZIP code 04284 in?: ZIP code 04284 is mostly in Kennebec County, Maine.
How many people live in ZIP code 04284?: About 1,101 people live in the 04284 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.