ZIP code 98611
Where is ZIP code 98611?
Castle Rock, Washington
Cowlitz County · Standard ZIP code
ZIP code 98611 belongs to Castle Rock, Washington in Cowlitz County. 98611 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Pacific Time zone and uses area codes 360 and 564. About 9,302 people live in the 98611 area, where the median household income is $86,322. The closest ZIP codes are 98645 (Silverlake, 6.8 mi east), 98593 (Vader, 8.6 mi north) and 98626 (Kelso, 9.1 mi south).
| ZIP code | 98611 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Castle Rock |
| State | Washington (WA) |
| County | Cowlitz County |
| Time zone | Pacific Time · now |
| Area codes | 360, 564 |
| Coordinates | 46.2783, -122.9139 map |
| 3-digit prefix | 986 |
Population and income in 98611
| Population | 9,302 · higher than 60% of Washington ZIP codes |
|---|---|
| People per square mile | 68 · lower than 58% of Washington ZIP codes |
| Median age | 43.7 years · higher than 62% of Washington ZIP codes |
| Men / women | 47% / 54% |
| Median household income | $86,322 · higher than 52% of Washington ZIP codes |
| Income per person | $37,729 |
| Below the poverty line | 8.5% |
| Bachelor’s degree or higher | 15% of adults 25+ |
| Median home value | $425,700 · lower than 57% of Washington ZIP codes |
| Median rent | $1,250 a month |
| Housing units | 3,723 |
| Households | 3,539 (2.62 people on average) |
| Owners / renters | 84% / 16% |
| Land area | 136.13 sq mi (plus 1.47 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 98611. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 98611
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 98645 | Silverlake, WA | 6.8 mi E | Standard |
| 98593 | Vader, WA | 8.6 mi N | Standard |
| 98626 | Kelso, WA | 9.1 mi S | Standard |
| 98632 | Longview, WA | 9.1 mi S | Standard |
| 98581 | Ryderwood, WA | 9.1 mi NW | Standard |
| 98591 | Toledo, WA | 11.9 mi N | Standard |
| 98649 | Toutle, WA | 12.8 mi E | Standard |
| 98609 | Carrolls, WA | 14.5 mi S | Standard |
| 98596 | Winlock, WA | 14.9 mi N | Standard |
| 97048 | Rainier, OR | 15 mi S | Standard |
| 98538 | Curtis, WA | 18.7 mi NW | Standard |
| 98625 | Kalama, WA | 19 mi S | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 98611 or measure the distance to another ZIP code.
How to address mail to 98611
123 MAIN ST
CASTLE ROCK WA 98611
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (98611-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 98611?
- 98611 is a Castle Rock, Washington ZIP code.
- What county is 98611 in?
- ZIP code 98611 is in Cowlitz County, Washington.
- What time zone is ZIP code 98611 in?
- 98611 is in the Pacific Time zone (America/Los_Angeles).
- What area code is 98611?
- Phone numbers in ZIP code 98611 use area codes 360 and 564.
- What is the population of ZIP code 98611?
- About 9,302 people live in ZIP code 98611, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 98611?
- The median household income in 98611 is $86,322 a year, higher than 52% of Washington ZIP codes.
- What ZIP codes are near 98611?
- The nearest ZIP codes to 98611 are 98645 (Silverlake, 6.8 miles), 98593 (Vader, 8.6 miles), 98626 (Kelso, 9.1 miles) and 98632 (Longview, 9.1 miles).