Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/ME/WINTHROP

Winthrop ZIP code, Maine

The ZIP code for Winthrop, ME is 04364, and its area code is 207.

USPS city name
1 ZIP code
Population
3,108
Area code
207
State
Maine

Winthrop in numbers

About 3,108 people live in Winthrop, in 1,187 households, the 46th-largest of Maine's 155 census places. The median household income is $61,058 a year, 18% below the Maine median of $74,733 (US: $80,734). The median owner-occupied home is valued at $244,900 (17% below the Maine median), and median gross rent is $881 a month. The median age is 37.3; 40.8% of adults 25 and over hold a bachelor's degree or higher (36.2% across Maine); the average commute takes 26 minutes.

Population3,108Winthrop3,108
Households1,187Winthrop1,187
Median age37.3Winthrop37.3Maine44.8US 38.9
Median household income$61,058Winthrop$61,058Maine$74,733US $80,734
Median home value$244,900Winthrop$244,900Maine$296,600US $332,700
Median gross rent$881Winthrop$881Maine$1,139US $1,413
Bachelor's degree or higher40.8%Winthrop40.8%Maine36.2%US 35.7%
Mean commute26.2 minWinthrop26.2 minMaine24.6 minUS 26.4 min
Population density562 / sq miWinthrop562 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Winthrop CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Winthrop

ZIP codes with the USPS city name Winthrop
ZIP City Type Population Median income Median home
04364 Winthrop , ME Standard 6,191 $86,470 $294,800

Map of Winthrop ZIP codes

04364

The ZIP codes of Winthrop, ME, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Winthrop

The nearest larger towns are Augusta (19,077 people, 11 mi), Gardiner (6,088 people, 12 mi) and Lewiston (38,324 people, 20 mi).

Towns near Winthrop
TownPopulationDistance
Hallowell 2,592 7.0 mi
Augusta 19,077 10.7 mi
Gardiner 6,088 11.8 mi
Lewiston 38,324 19.5 mi
Oakland 2,710 19.9 mi
Waterville 17,077 21.0 mi
Lisbon 3,612 21.7 mi
Auburn 24,602 22.2 mi
Lisbon Falls 4,267 22.4 mi
Winslow 5,873 23.2 mi
Farmington 4,705 25.7 mi
Topsham 7,271 26.0 mi
Bath 8,815 27.5 mi

More nearby: every ZIP code in Kennebec County · Maine ZIP codes

Cite this page

zipcodes.pro. “Winthrop, ME ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/me/winthrop

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