ZIP Codes of Polk County, OR

Population & People
Population & People
Total Population
88,045
Household Income
Household Income
Median Income
$74,402
Housing
Housing
Total Housing Units
34,261
Business & Economy
Business & Economy
Total Businesses
1,561
Employment
Employment
Employment Rate
56.33%
Education
Education
Bachelor's Degree+
31.43%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 7 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:7 ZIP Codes (7 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:503 / 971
Timezone:Pacific (GMT -08:00)
Local Time:11:54:48 PM
Population:88,045 [See All]
FIPS:41053
CBSA:Salem, OR
Land Area:651 sq mi
Water Area:2 sq mi
Coordinates:44.9263, -123.3526
Quick Link:
https://www.zip-codes.com/county/or-polk.asp
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Among Oregon's 5 fastest-growing counties
#3 statewide, up 17.7% from 2014 to 2024.
Striking education divide
Bachelor's share spans 3.5% to 39.1% — a 36-point gap.

Standout ZIPs in this County


Most Populous
Salem · 34,879 people
39.6% of county total
Highest Income
Salem · $98,031 median
1.3× county average
Largest Land Area
Monmouth · 143.9 sq mi
Spans the most ground
Fastest Growth
Falls City · 41.8% (10-yr)
1,082 → 1,534 residents
Most Educated
Salem · 39.1% bachelor's+
9,493 of 24,278 adults 25+

Things worth knowing about Polk County


88,045 residents live across 7 ZIPs covering 651 sq mi, served by 7 distinct USPS-recognized cities.

Population moved from 74,773 to 88,045 from 2014 to 2024 — a +17.7% change. 6 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 97304 (Salem, $98,031 median) and poorest ZIP 97347 (Grand Ronde, $52,500) are 27.2 miles apart — a 1.9× income gap across local geography.

Median home values vary 2.0× across this county — from $313,800 in 97347 (Grand Ronde) to $625,000 in 97371 (Rickreall).

Density varies 50× across the county — from 13 people/sq mi in 97347 (Grand Ronde) to 624 in 97304 (Salem).

Educational attainment ranges from 3.5% bachelor's+ in 97347 (Grand Ronde) to 39.1% in 97304 (Salem) — the breadth of educational profiles across the area.

Within Oregon, this is the #12 most populous of 38 counties and ranks #18 for median household income with the #3 fastest decade growth .

Weighted by population, the typical household earns about $85,405 across the county — reflecting what a typical resident sees, not a simple ZIP average.

31.4% of adults age 25+ hold a bachelor's degree or higher (18,450 of 58,699 reporting).

7 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Polk County


Where the growth lives

Polk County grew 17.7% over the past decade — concentrated in 2 high-growth ZIPs:

Falls City
+41.8%
1,082 → 1,534 residents
Rickreall
+38.8%
500 → 694 residents

All ZIP Codes in Polk County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
97304SalemStandard34,879$98,03155.918.3%
97338DallasStandard23,419$78,858129.216.6%
97361MonmouthStandard14,488$69,505143.923.0%
97351IndependenceStandard11,454$88,51954.014.6%
97347Grand RondeStandard1,577$52,500125.7-13.9%
97344Falls CityStandard1,534$59,000107.541.8%
97371RickreallStandard69435.138.8%

Adjacent & Nearby Counties