ZIP code 98240
Where is ZIP code 98240?
Custer, Washington
Whatcom County · Standard ZIP code
ZIP code 98240 belongs to Custer, Washington in Whatcom County. 98240 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 3,593 people live in the 98240 area, where the median household income is $110,116. The closest ZIP codes are 98230 (Blaine, 5.3 mi west), 98248 (Ferndale, 5.3 mi south) and 98231 (Blaine, 6.9 mi northwest).
| ZIP code | 98240 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Custer |
| State | Washington (WA) |
| County | Whatcom County |
| Time zone | Pacific Time · now |
| Area codes | 360, 564 |
| Coordinates | 48.9374, -122.6226 map |
| 3-digit prefix | 982 |
Population and income in 98240
| Population | 3,593 · lower than 54% of Washington ZIP codes |
|---|---|
| People per square mile | 161 · higher than 51% of Washington ZIP codes |
| Median age | 36.9 years · lower than 75% of Washington ZIP codes |
| Men / women | 50% / 50% |
| Median household income | $110,116 · higher than 79% of Washington ZIP codes |
| Income per person | $47,642 |
| Below the poverty line | 4.3% |
| Bachelor’s degree or higher | 24% of adults 25+ |
| Median home value | $619,700 · higher than 77% of Washington ZIP codes |
| Housing units | 1,345 |
| Households | 1,265 (2.83 people on average) |
| Owners / renters | 93% / 7.0% |
| Land area | 22.26 sq mi (plus 0.02 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 98240. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 98240
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 98230 | Blaine, WA | 5.3 mi W | Standard |
| 98248 | Ferndale, WA | 5.3 mi S | Standard |
| 98231 | Blaine, WA | 6.9 mi NW | PO Box only |
| 98264 | Lynden, WA | 7.4 mi E | Standard |
| 98226 | Bellingham, WA | 12.6 mi SE | Standard |
| 98247 | Everson, WA | 13.4 mi E | Standard |
| 98276 | Nooksack, WA | 13.7 mi E | Standard |
| 98227 | Bellingham, WA | 13.7 mi SE | PO Box only |
| 98228 | Bellingham, WA | 13.7 mi SE | PO Box only |
| 98225 | Bellingham, WA | 14.4 mi SE | Standard |
| 98262 | Lummi Island, WA | 15.8 mi S | Standard |
| 98295 | Sumas, WA | 19 mi E | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 98240 or measure the distance to another ZIP code.
How to address mail to 98240
123 MAIN ST
CUSTER WA 98240
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (98240-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 98240?
- 98240 is a Custer, Washington ZIP code.
- What county is 98240 in?
- ZIP code 98240 is in Whatcom County, Washington.
- What time zone is ZIP code 98240 in?
- 98240 is in the Pacific Time zone (America/Los_Angeles).
- What area code is 98240?
- Phone numbers in ZIP code 98240 use area codes 360 and 564.
- What is the population of ZIP code 98240?
- About 3,593 people live in ZIP code 98240, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 98240?
- The median household income in 98240 is $110,116 a year, higher than 79% of Washington ZIP codes.
- What ZIP codes are near 98240?
- The nearest ZIP codes to 98240 are 98230 (Blaine, 5.3 miles), 98248 (Ferndale, 5.3 miles), 98231 (Blaine, 6.9 miles) and 98264 (Lynden, 7.4 miles).