There are 2 unique ZIP codes in Pasco, Washington. Area code: 509.
2
ZIP codes
486.29
sq mi land
13.88
sq mi water
509
area code
Pasco, WA ZIP code map
About Pasco, WA
Pasco, Washington, is a vibrant city located in the southeastern part of the state, forming part of the Tri-Cities along with Kennewick and Richland. As the county seat of Franklin County, Pasco serves as a central hub for commerce and recreation in the region. Known for its diverse community and rich agricultural background, the city offers a blend of urban living and access to scenic landscapes.
Location & geography
Pasco is situated in Franklin County, along the banks of the confluence of the Columbia and Snake Rivers. It is approximately 4 miles southwest of Kennewick, 10 miles from Richland, and about 30 miles from Walla Walla. The city covers a land area of 486.29 square miles, with 13.88 square miles designated as water, offering a mix of farmland and riverfront scenery.
Community & economy
The community of Pasco is characterized by its multicultural population and active lifestyle. Agriculture, particularly fruit and vegetable farming, is a significant industry in the area, alongside shipping and logistics due to its strategic location. Daily life is vibrant, with various events and festivals that celebrate the diverse cultural heritage of its residents.
Transportation
Pasco is well-connected by several highways, including Interstate 182 and U.S. Route 395, facilitating easy access to neighboring cities and regions. The nearest major airport is the Tri-Cities Airport, located approximately 2 miles away, providing commercial flights to various destinations. Public transit options also exist, enhancing mobility within the city.
History
Pasco was founded in the late 19th century and grew rapidly due to the arrival of the railroad, which boosted trade and agriculture. The city has been historically significant as a transportation hub, leading to its development in logistics and shipping industries. Key events include the establishment of various agricultural fairs that celebrate the region's rich farming heritage.
Did you know?
One surprising fact about Pasco is that it has one ZIP code, 99301, making it geographically simple in terms of postal services. Additionally, the Franklin County Fair, held annually, draws thousands of visitors and showcases the city’s agricultural roots.
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions
What is the ZIP code for Pasco, WA?
Pasco, WA has one ZIP code: 99301.
What is the main ZIP code for Pasco, WA?
The primary ZIP code for Pasco, WA is 99301. The city uses area code 509 for phone service.
What county is Pasco, WA in?
Pasco is located in Franklin County, Washington.
How many ZIP codes are in Pasco, WA?
Pasco, WA has 1 ZIP code.
What ZIP code covers downtown Pasco and the Columbia River waterfront area?
Downtown Pasco and the Columbia River waterfront area are located in ZIP code 99301, which serves as the primary commercial and civic center of the city.
What is the ZIP code for the Pasco Port District and industrial areas along the Columbia River?
The Pasco Port District and industrial areas along the Columbia River are located in ZIP code 99301, which encompasses the major employment and transportation hub of the city.
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