🇺🇸 United States ZIP Code

STANDARD

97231

Portland

ZIP Code 97231 is a standard zip code serving Portland, Portland, Oregon (OR), in Multnomah County, United States. It has an estimated population of 4,280 with a median household income of $87,281. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Oregon (OR)
County: Multnomah
City: Portland
Timezone: America/Los_Angeles

Coordinates

Latitude: 45.640100
Longitude: -122.838000

Geographic Details

Land Area: 64.33 mi²
Water Area: 13.16 mi²
Population Density: 67.0 people per mi² (45th percentile)
Bounding Box: 45.858331°N, 45.562938°S, -122.759400°E, -122.929222°W

With 4,280 residents spread across 64.33 square miles, this area has a population density of 67.0 people per square mile.

Demographics

4,280

Population

55th percentile

$87,281

Median Income

90th percentile

$432,700

Median Home Value

90th percentile

64.33 mi²

Land Area

The median household income in 97231 is $87,281, and the median home value is $432,700. This places the area in the top 25% nationally for household income.

Housing

1,963

Total Units

1,802

Occupied Units

91.8%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Portland, OR.

97201

Portland

97202

Portland

97203

Portland

97204

Portland

97205

Portland

97206

Portland

97207

Portland

97208

Portland

97209

Portland

97210

Portland

Similar ZIP Codes in Oregon

ZIP codes with similar median household income in Oregon.

97219

Portland

$77,756

97140

Sherwood

$82,377

97106

Banks

$82,232

97068

West Linn

$86,042

97229

Portland

$100,063

97239

Portland

$74,834

97089

Damascus

$87,052

97004

Beavercreek

$77,829

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.