Kennewick, WA ZIP Codes
3 ZIP codes serve Kennewick, Washington: 99336, 99337 and 99338. Together they are home to 104,655 residents in 37,712 households. Median household income ranges from $62,527 in 99336 to $111,042 in 99338.
Kennewick city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 85,295 |
| Households | 31,372 |
| Median household income | $73,576 |
| Median home value | $370,700 |
| Median age | 35.7 |
| Median rent | $1,240 |
All 3 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 104,655 |
| Households (sum of ZIP codes) | 37,712 |
| Median household income, range across ZIP codes | $62,527 (99336) to $111,042 (99338) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $82,421 |
| Homeowners | 65.7% |
| Households with kids under 18 | 32.8% |
| Moved in the past year | 11.3% |
| Carrier routes in EDDM2GO's route library | 40 routes, 29,266 homes (2 of 3 ZIP codes) |
Top facts
- Highest median household income in Kennewick: 99338 ($111,042)
- Most residents: 99336 (50,735 people)
- Highest homeownership: 99337 (85.5% own their home)
- Most households with kids: 99338 (40.4% of households)
- Most new movers: 99336 (13.1% moved in last year)
- Youngest median age: 99336 (34.4 years)
- Highest median home value: 99338 ($551,500)
Every ZIP code in Kennewick
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 99336 | Kennewick | 50,735 | 19,385 | $62,527 | $324,400 | 48.3% | 29.7% | 13.1% | 26 | 22,745 | 94% of its land; mailing city |
| 99337 | Kennewick | 33,287 | 11,390 | $98,848 | $395,500 | 85.5% | 33.3% | 9.8% | — | — | 5% of its land; mailing city |
| 99338 | Kennewick | 20,633 | 6,937 | $111,042 | $551,500 | 81.9% | 40.4% | 9.1% | 14 | 8,972 | 16% of its land; mailing city |
A ZIP code is listed for Kennewick when at least 10% of its land lies inside Kennewick city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Kennewick. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Kennewick.
Counties
- Benton County — 12 ZIP codes
Nearby cities sharing these ZIP codes
- Finley — 1 ZIP code
Price a mailing to Kennewick ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Kennewick, WA?
- 99336, 99337 and 99338. A ZIP code is listed for Kennewick when at least 10% of its land lies inside Kennewick city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Kennewick.
- What is the population of Kennewick, WA?
- The Census Bureau counts 85,295 residents inside Kennewick city limits (ACS 2020–2024). The 3 ZIP codes that serve Kennewick hold 104,655 residents in all.
- What is the median household income in Kennewick, WA?
- $73,576 inside Kennewick city limits, per the Census Bureau. Across its ZIP codes the medians run from $62,527 to $111,042.
- Which Kennewick ZIP code has the highest median household income?
- 99338, at $111,042, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Kennewick, WA?
- For the 2 of 3 ZIP codes in EDDM2GO's stored route library: 40 carrier routes reaching 29,266 residential and 2,328 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.