ZIP code 99346
Where is ZIP code 99346?
Plymouth, Washington
Benton County · PO Box only ZIP code
ZIP code 99346 belongs to Plymouth, Washington in Benton County. 99346 is a PO Box only ZIP code: it is used for post office boxes at the Plymouth post office, not for street addresses. It is in the Pacific Time zone and uses area codes 458, 509 and 541. About 198 people live in the 99346 area, where the median household income is $50,865. The closest ZIP codes are 97882 (Umatilla, 3.1 mi southeast), 97844 (Irrigon, 5.8 mi southwest) and 97838 (Hermiston, 8.2 mi southeast).
| ZIP code | 99346 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Plymouth |
| State | Washington (WA) |
| County | Benton County |
| Time zone | Pacific Time · now |
| Area codes | 458, 509, 541 |
| Coordinates | 45.9301, -119.4023 map |
| 3-digit prefix | 993 |
Population and income in 99346
| Population | 198 · lower than 91% of Washington ZIP codes |
|---|---|
| People per square mile | 1 · lower than 98% of Washington ZIP codes |
| Median age | 55.8 years · higher than 86% of Washington ZIP codes |
| Men / women | 67% / 33% |
| Median household income | $50,865 · lower than 94% of Washington ZIP codes |
| Income per person | $28,424 |
| Below the poverty line | 8.6% |
| Bachelor’s degree or higher | 17% of adults 25+ |
| Median home value | $209,200 · lower than 96% of Washington ZIP codes |
| Housing units | 75 |
| Households | 75 (2.29 people on average) |
| Owners / renters | 95% / 5.3% |
| Land area | 142.89 sq mi (plus 3.89 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 99346. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 99346
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 97882 | Umatilla, OR | 3.1 mi SE | Standard |
| 97844 | Irrigon, OR | 5.8 mi SW | Standard |
| 97838 | Hermiston, OR | 8.2 mi SE | Standard |
| 97875 | Stanfield, OR | 13.5 mi SE | Standard |
| 97826 | Echo, OR | 16.4 mi SE | Standard |
| 97818 | Boardman, OR | 16.9 mi SW | Standard |
| 99338 | Kennewick, WA | 17 mi NE | Standard |
| 99345 | Paterson, WA | 17.5 mi W | PO Box only |
| 99337 | Kennewick, WA | 21.5 mi NE | Standard |
| 99336 | Kennewick, WA | 22.4 mi NE | Standard |
| 99352 | Richland, WA | 22.9 mi N | Standard |
| 99320 | Benton City, WA | 24.6 mi N | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 99346 or measure the distance to another ZIP code.
How to address mail to 99346
PO BOX 123
PLYMOUTH WA 99346
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (99346-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 99346?
- 99346 is a Plymouth, Washington ZIP code.
- What county is 99346 in?
- ZIP code 99346 is in Benton County, Washington.
- What time zone is ZIP code 99346 in?
- 99346 is in the Pacific Time zone (America/Los_Angeles).
- What area code is 99346?
- Phone numbers in ZIP code 99346 use area codes 458, 509 and 541.
- What is the population of ZIP code 99346?
- About 198 people live in ZIP code 99346, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 99346?
- The median household income in 99346 is $50,865 a year, lower than 94% of Washington ZIP codes.
- Can I use 99346 for a street address?
- No. 99346 is only for PO Boxes. Street addresses in Plymouth use another ZIP code.
- What ZIP codes are near 99346?
- The nearest ZIP codes to 99346 are 97882 (Umatilla, 3.1 miles), 97844 (Irrigon, 5.8 miles), 97838 (Hermiston, 8.2 miles) and 97875 (Stanfield, 13.5 miles).