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 — STATE/OR/COUNTY/POLK

Polk County, OR ZIP codes

Polk County, OR has 6 ZIP codes, in 6 towns: 97304, 97338, 97361, 97351, 97344 and 97371. 1 more crosses into it from a neighbouring county: 97378.

The county seat is Dallas.

ZIP codes
6
Partly in it
1 more
Towns
6
County seat
Dallas
County FIPS
41053
State
Oregon
Population
89,662
Median household income
$85,118
Land area
741 sq mi
Area codes
503, 971
Metro area
Salem

Polk County ZIP codes by town

Dallas (county seat)
97338

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Polk County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Polk County.

Map of Polk County ZIP codes

973049733897344973519736197371

The ZIP codes of Polk County, 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.

Polk County in numbers

About 89,662 people live in Polk County, in 32,986 households, the 12th most populous of Oregon's 36 counties. The median household income is $85,118 a year, about the same as the Oregon median of $83,011 (US: $80,734). The median owner-occupied home is valued at $454,700 (5% below the Oregon median), and median gross rent is $1,299 a month. The median age is 37.8; 31.2% of adults 25 and over hold a bachelor's degree or higher (36.8% across Oregon); the average commute takes 25 minutes.

Population89,662Polk89,662
Households32,986Polk32,986
Median age37.8Polk37.8Oregon40.4US 38.9
Median household income$85,118Polk$85,118Oregon$83,011US $80,734
Median home value$454,700Polk$454,700Oregon$477,600US $332,700
Median gross rent$1,299Polk$1,299Oregon$1,525US $1,413
Bachelor's degree or higher31.2%Polk31.2%Oregon36.8%US 35.7%
Mean commute25.3 minPolk25.3 minOregon23.0 minUS 26.4 min
Population density121 / sq miPolk121 / sq mi

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

Largest towns in Polk County

Largest towns in Polk County
TownZIP codesPopulation
Salem 1 178,865
Dallas 1 17,531
Monmouth 1 11,428
Independence 1 10,199
Falls City 1 1,222
Rickreall 1 52

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Polk County.

Not sure you are in Polk County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Polk County, with figures

ZIP codes in Polk County
ZIP City Type Population Median income Median home
97304 Salem , OR Standard 34,879 $98,031 $499,300
97338 Dallas , OR Standard 23,419 $78,858 $424,400
97344 Falls City , OR Standard 1,534 $59,000 $320,700
97351 Independence , OR Standard 11,454 $88,519 $396,800
97361 Monmouth , OR Standard 14,488 $69,505 $451,100
97371 Rickreall , OR Standard 694 — $625,000

Cite this page

zipcodes.pro. “Polk County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/or/county/polk

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