ZIP Code 98603, Washington
ZIP Code 98603 profile, demographic data, and geographic information.
ZCTA5 98603 is a 5-digit ZIP Code area located in Cowlitz County, Washington. As of official census estimates, it has a reported population of 1,267. The land area covers 114.73 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 1,267 | ±510 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 41.3 yrs | ±16.9 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 395 | ±137 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 615 | ±204 |
| Occupied Housing Units | 395 | ±137 |
| Vacant Housing Units | 220 | ±171 |
| Median Home Value | $464,500 | ±$91,452 |
| Median Gross Rent | Suppressed | — |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $78,281 | ±$30,635 |
| Per Capita Income | $25,673 | ±$4,382 |
| Poverty Rate | 15% | ±9.7% |
| Population Below Poverty Level | 189 | ±144 |
| Unemployment Rate | 0% | ±3.1% |
| Civilian Labor Force, Employed | 423 | ±222 |
| Broadband Internet Rate | 93.9% | ±14% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 113,982 (2024)
ID: 176794
|
County | Official County Government |
Contact: BOARD OF COWLITZ COUNTY COMMISSIONER
207 N 4TH AVE, RM 305, KELSO WA 98626-4191
|
Education
Listing 9 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | 05-08 | AMBOY, WA | |
| Regular School Nearby | KG-08 | WOODLAND, WA | |
| Alternative School Nearby | KG-12 | La Center, WA | |
| Regular School Nearby | PK-05 | La Center, WA | |
| Regular School Nearby | 09-12 | La Center, WA | |
| Regular School Nearby | 06-08 | La Center, WA | |
| Regular School Nearby | KG-04 | Woodland, WA | |
| Regular School Nearby | PK-04 | YACOLT, WA | |
| Regular School Nearby | KG-04 | Ariel, WA |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 9 civic institutions across 1 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
YALE VALLEY LIBRARY EXPRESS
|
Library | 4.5 mi away | 11842 LEWIS RIVER ROAD, ARIEL, WA, 98603 |
(360) 906-5000
|
|
YACOLT LIBRARY EXPRESS
|
Library | 13.1 mi away | 105 E. YACOLT RD., YACOLT, WA, 98675 |
(360) 906-5000
|
|
LA CENTER COMMUNITY LIBRARY
|
Library | 17.7 mi away | 1411 NE LOCKWOOD CREEK ROAD, LA CENTER, WA, 98629 |
(360) 906-4760
|
|
WOODLAND COMMUNITY LIBRARY
|
Library | 18.9 mi away | 411 LAKESHORE DRIVE, WOODLAND, WA, 98674 |
(360) 906-4830
|
|
BATTLE GROUND COMMUNITY LIBRARY
|
Library | 20.1 mi away | 1207 SE 8TH WAY, BATTLE GROUND, WA, 98604 |
(360) 906-5000
|
|
KALAMA PUBLIC LIBRARY
|
Library | 20.9 mi away | 312 N 1ST, KALAMA, WA, 98625 |
(360) 673-4568
|
|
RIDGEFIELD COMMUNITY LIBRARY
|
Library | 22.9 mi away | 210 NORTH MAIN AVENUE, RIDGEFIELD, WA, 98642 |
(360) 906-4770
|
|
ST. HELENS PUBLIC LIBRARY
|
Library | 23.7 mi away | 375 S 18TH ST, STE A, ST. HELENS, OR, 97051 |
(503) 397-4544
|
|
KELSO PUBLIC LIBRARY
|
Library | 24.0 mi away | 351 THREE RIVERS DRIVE, SUITE 1263, KELSO, WA, 98626 |
(360) 423-8110
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at COUGAR 6 E, WA US, located 10.1 miles from ZCTA5 98603. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 44.8° | 34.3° | 39.6° | 17.68" | 6.5" |
| February | 49.0° | 35.0° | 42.0° | 11.99" | 3.1" |
| March | 53.5° | 36.5° | 45.0° | 13.20" | 1.7" |
| April | 59.3° | 39.8° | 49.6° | 9.71" | 0.1" |
| May | 67.7° | 45.5° | 56.6° | 5.17" | 0.0" |
| June | 72.8° | 49.6° | 61.2° | 3.82" | 0.0" |
| July | 81.2° | 53.9° | 67.6° | 0.91" | 0.0" |
| August | 81.7° | 54.1° | 67.9° | 1.42" | 0.0" |
| September | 75.4° | 51.0° | 63.2° | 4.26" | 0.0" |
| October | 62.5° | 44.9° | 53.7° | 10.55" | 0.0" |
| November | 50.9° | 38.9° | 44.9° | 17.83" | 0.7" |
| December | 44.3° | 34.2° | 39.3° | 18.76" | 4.1" |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Cougar CDP | CDP | 5.4 mi | — |
| Amboy CDP | CDP | 10.3 mi | — |
| Yacolt town | Town | 13.2 mi | — |
| Lewisville CDP | CDP | 17.1 mi | — |
| La Center city | City | 18.4 mi | — |
| Venersborg CDP | CDP | 18.8 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 98603. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.