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/ND/PORTLAND

Portland ZIP code, North Dakota

The ZIP code for Portland, ND is 58274, and its area code is 701.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
549
Area code
701

NANPA lists no telephone rate centre for Portland itself, so these are the area codes of the nearest one, Mayville (9.5 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Portland uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Portland in numbers

About 549 people live in Portland, in 266 households. The median household income is $90,000 a year, 17% above the North Dakota median of $76,657 (US: $80,734). The median owner-occupied home is valued at $194,000 (22% below the North Dakota median), and median gross rent is $623 a month. The median age is 53.1; 25.8% of adults 25 and over hold a bachelor's degree or higher (32.7% across North Dakota); the average commute takes 16 minutes.

Population549Portland549
Households266Portland266
Median age53.1Portland53.1North Dakota35.9US 38.9
Median household income$90,000Portland$90,000North Dakota$76,657US $80,734
Median home value$194,000Portland$194,000North Dakota$249,900US $332,700
Median gross rent$623Portland$623North Dakota$954US $1,413
Bachelor's degree or higher25.8%Portland25.8%North Dakota32.7%US 35.7%
Mean commute15.7 minPortland15.7 minNorth Dakota17.9 minUS 26.4 min
Population density658 / sq miPortland658 / sq mi

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

ZIP codes addressed as Portland

ZIP codes with the USPS city name Portland
ZIP City Type Population Median income Median home
58274 Portland , ND Standard 930 $105,395 $203,300

Other ZIP codes overlapping Portland

These ZIP codes cover part of Portland but are addressed as somewhere else.

ZIP codes overlapping Portland
ZIP City Type Population Median income Median home
58257 Mayville , ND Standard 2,180 $60,395 $196,200

Map of Portland ZIP codes

58274

The ZIP codes of Portland, ND, 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 Portland

The nearest larger towns are Mayville (1,976 people, 2.0 mi), Hatton (608 people, 10 mi) and Hillsboro (1,704 people, 16 mi).

More nearby: every ZIP code in Steele County · North Dakota ZIP codes

Cite this page

zipcodes.pro. “Portland, ND ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/nd/portland

Underlying data is public domain or openly licensed — sources, vintages and licences.